0x3aa00bb9…29e6sent to0xb3c415c2…a537·#19,680,392·view on Etherscan
# [Smart Contract Upgrade and Fee Scalar Changes for v1.4.1]
### 1. Support for the Colosseum's Cancun block fault-proof system
With the Ecotone upgrade, three fields are added to the block header, characteristic of the Cancun block: BlobGasUsed, ExcessBlobGas, and ParentBeaconRoot. Therefore, this upgrade to the Colosseum contract includes support for the Cancun block fault-proof system.
### 2. Change Fee Scalars for Ecotone
Following the activation of the Ecotone upgrade, blob-carrying transactions are utilized to post batch data to L1. Consequently, adjustments have been made to the L1 fee structure, including the setting of the L1 fee scalar and L1 blob fee scalar. For more detailed information, please refer the specs.
specs: <https://specs.optimism.io/protocol/exec-engine.html#ecotone-l1-cost-fee-changes-eip-4844-da>