Allow epoch boundary reorgs in Fulu - #5547
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jtraglia merged 3 commits intoAug 18, 2026
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- Bump consensus spec tests from v1.7.0-alpha.12 to v1.7.0-beta.0, through alpha.13 and alpha.14 - alpha.13: Look up payload availability at the parent block's slot ([consensus-specs#5473](ethereum/consensus-specs#5473)) - alpha.13: Enable equivocation tracking by default, gated on the early cutoff window, required by the `should_apply_proposer_boost` fork-choice tests ([consensus-specs#5441](ethereum/consensus-specs#5441)) - alpha.13: Source KZG spec test vectors from ethereum/cryptography-specs ([consensus-specs#5398](ethereum/consensus-specs#5398)) - alpha.14: Explicitly set bid fields, including the slot, when upgrading to Gloas ([consensus-specs#5550](ethereum/consensus-specs#5550), [consensus-specs#5553](ethereum/consensus-specs#5553)) - alpha.14: Disallow proposer reorgs at epoch boundaries before Fulu ([consensus-specs#5547](ethereum/consensus-specs#5547)) - alpha.14: Refresh ethspecify references, add exceptions for named SSZ collections ([consensus-specs#5528](ethereum/consensus-specs#5528)), executable gossip validation functions ([consensus-specs#5294](ethereum/consensus-specs#5294)), and the gas limit schedule ([consensus-specs#5533](ethereum/consensus-specs#5533)) - beta.0: Reject bids whose block hash equals the parent block hash, in state transition and gossip ([consensus-specs#5594](ethereum/consensus-specs#5594), cherry-picked from OffchainLabs#17443) - beta.0: Read the parent slot from the latest block header when applying the parent payload ([consensus-specs#5554](ethereum/consensus-specs#5554)) - beta.0: Rename the PTC SSZ types to `PayloadTimelinessCommittee*` in ethspecify references ([consensus-specs#5558](ethereum/consensus-specs#5558)) - The beta.0 `minimal.tar.gz` is not published yet, so the WORKSPACE minimal hash still points at alpha.14 and will be updated once the asset lands --------- Co-authored-by: Potuz <potuz@prysmaticlabs.com> Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
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The proposer lookahead introduced in Fulu fixes proposer assignments before the epoch boundary, so a re-org of a late block at the end of the previous epoch cannot change the current slot's proposer.
Alternative to #5492