feat(rpc): validate BAL in builder submission v6#24297
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Rebuilds the submitted BAL during builder submission V6 validation and rejects payloads whose rebuilt access list or hash does not match the submission.
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The executor already rebuilds the block access list whenever the block header contains a BAL hash, so the rebuilt hash can be handed to validate_block_post_execution which compares it against the header. This commits to the submitted access list because the header's BAL hash is derived from the submitted bytes when the payload is converted into a block.
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took this over to get it in: merged latest main and simplified the implementation — the executor now rebuilds the BAL automatically when the header carries a BAL hash, so we can hand the rebuilt hash to the existing |
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Rebuilds the block access list during
flashbots_validateBuilderSubmissionV6and rejects payloads whose access list doesn't match what execution produces.The executor rebuilds the BAL whenever the block header contains a BAL hash, so validation hands the rebuilt list's hash to
validate_block_post_executionwhich checks it against the header. This commits to the submitted access list because the header's BAL hash is derived from the submitted bytes when the payload is converted into a block. The submitted BAL is additionally validated against the block gas limit before execution, mirroring engine-side validation.The v6 e2e test now also covers undecodable BAL bytes and a well-formed BAL that doesn't match execution.