Ecotone

Overview of the Ecotone hardfork, integrating Ethereum Dencun changes including EIP-4844 blob transactions and EIP-4788 beacon block roots.

Activation Timestamps

Network	Activation timestamp
mainnet	1710374401 (2024-03-14 00:00:01 UTC)
sepolia	1708534800 (2024-02-21 17:00:00 UTC)

The Ecotone upgrade contains the Dencun upgrade from L1, and adopts EIP-4844 blobs for data-availability.

Execution Layer

• Cancun (Execution Layer):
  • EIP-1153: Transient storage opcodes
  • EIP-4844: Shard Blob Transactions
    • Blob transactions are disabled
  • EIP-4788: Beacon block root in the EVM
    • The L1 beacon block root is embedded into L2
    • The Beacon roots contract deployment is automated
  • EIP-5656: MCOPY - Memory copying instruction
  • EIP-6780: SELFDESTRUCT only in same transaction
  • EIP-7516: BLOBBASEFEE opcode
    • BLOBBASEFEE always pushes 1 onto the stack
• Deneb (Consensus Layer): not applicable to L2
  • EIP-7044: Perpetually Valid Signed Voluntary Exits
  • EIP-7045: Increase Max Attestation Inclusion Slot
  • EIP-7514: Add Max Epoch Churn Limit

Consensus Layer

• Blobs Data Availability: support blobs DA the L1 Data-retrieval stage.
• Rollup fee update: support blobs DA in L1 Data Fee computation
• Auto-upgrading and extension of the L1 Attributes Predeployed Contract (also known as L1Block predeploy)