Isthmus: Updates for L2 withdrawals root in header #12767
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vdamle
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* add withdrawalsRoot to ExecutionPayload. * add a `BlocksV4` topic to p2p gossip and check for non-empty withdrawalsRoot on v4 topic. * add checks for whether block is type v4 and apply relevant marshal/unmarshal for l2 withdrawals root.
* attributes check * outputV0AtBlock api update * minor type updates
and fixes for a few failures
when computing L2OutputRoot, no need to re-compute the storage root if Isthmus is active.
and fix lint errors
* `RPCResponseCheck` is an interface that currently has a function that validates withdrawals. * There's an implementation of this interface for L1 and L2 * L1's response checker validates that the withdrawals list matches the root in the header. * L2's response checker validates that the withdrawals list is empty when the withdrawalsRoot is not nil
will move to a separate PR
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Closing this PR in lieu of the following stacked PRs: 📚
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Description
This PR proposes changes to add:
L2ToL1MessagePassercontract to theExecutionPayload.v4) for Isthmus blocks.op-programupdate to use thewithdrawalsRootfrom the header, instead of computing the storage rootwhen computing
L2OutputRoot.Tests
Additional context
Addresses changes to Consensus Layer to support L2 withdrawals root in the block header, as outlined in #12044
Spec changes: ethereum-optimism/specs#394
EL changes:
Metadata
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