v0.12.3a0

Starknet

• Performance optimizations in the gateway and the computation of the Patricia storage root
• Support secp256r1 syscalls in the Starknet OS. Thanks to Braavos for adapting the secp256k1 code to secp256r1!
• Restriction for __validate__ and the constructor of DeployAccount transactions:
  • Restrict access to block_number, block_timestamp and sequencer_address in the get_execution_info syscall - return zero values
  • Restrict access to some syscalls:
    • Cairo contracts: get_block_hash
    • CairoZero contracts: get_block_number, get_block_timestamp, get_sequencer_address

CairoZero

• Move structs that are common to secp256k1 and secp256r1 to a separate file