Canyon

Overview of the Canyon hardfork, bringing Ethereum Shanghai EIPs (EIP-3651, EIP-3855, EIP-3860) to the Base execution layer.

Activation Timestamps

Network	Activation timestamp
mainnet	1704992401 (2024-01-11 17:00:01 UTC)
sepolia	1699981200 (2023-11-14 17:00:00 UTC)

The Canyon upgrade contains the Shapella upgrade from L1 and some minor protocol fixes. The Canyon upgrade uses a L2 block-timestamp activation-rule, and is specified in both the rollup-node (canyon_time) and execution engine (config.canyonTime). Shanghai time in the execution engine should be set to the same time as the Canyon time.

Execution Layer

• Shapella Upgrade
  • EIP-3651: Warm COINBASE
  • EIP-3855: PUSH0 instruction
  • EIP-3860: Limit and meter initcode
  • EIP-4895: Beacon chain push withdrawals as operations
    • Withdrawals are prohibited in P2P Blocks
    • Withdrawals should be set to the empty array with Canyon
  • EIP-6049: Deprecate SELFDESTRUCT
• Modifies the EIP-1559 Denominator
• Adds the deposit nonce & deposit nonce version to the deposit receipt hash
• Deploys the create2Deployer to 0x13b0D85CcB8bf860b6b79AF3029fCA081AE9beF2

Consensus Layer

• Channel Ordering Fix