This is a proposal for the Ecotone network upgrade, which adopts EIP-4844 blobs for data availability and activates Dencun L1 extensions. The remaining changes in this upgrade bring the core improvements from the L1 Dencun hardfork into the OP stack, including new opcodes and the beacon root support. While blob data availability requires L1 Dencun activation, the Ecotone upgrade can be activated independently of it.

If this vote passes, the Ecotone upgrade will be scheduled for execution on March 14th at 00:00:01 UTC.

The upgrade will occur automatically for nodes on a release which contains the baked in activation time. Ecotone is code complete in the optimism monorepo at commit f707883038d527cbf1e9f8ea513fe33255deadbc and op-geth at commit 0402d543c3d0cff3a3d344c0f4f83809edb44f10.

This proposal is eligible for Voting Cycle #19: https://gov.optimism.io/t/upgrade-proposal-5-ecotone-network-upgrade/7669

If passed in the Token House, it will proceed to a veto period in the Citizens’ House.