Skip execution payload verification for finalized blocks #4591
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While syncing the finalized portion of the chain, the execution client cannot efficiently sync and most of the time returns `SYNCING` - in this PR, we use CL-verified optmistic sync as long as the block is claimed to be finalized, only occasionally updating the EL with progress. Although a peer might lie about what is finalized and what isn't, eventually we'll call the execution client - thus, all a dishonest client can do is delay execution verification slightly. Gossip blocks in particular are never assumed to be finalized.
tersec
approved these changes
Feb 4, 2023
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While syncing the finalized portion of the chain, the execution client cannot efficiently sync and most of the time returns
SYNCING- in this PR, we use CL-verified optmistic sync as long as the block is claimed to be finalized, only occasionally updating the EL with progress.Although a peer might lie about what is finalized and what isn't, eventually we'll call the execution client - thus, all a dishonest client can do is delay execution verification slightly. Gossip blocks in particular are never assumed to be finalized.