Bug report: get_block_header_at off-by-one in archive membership proof#252
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critesjosh wants to merge 2 commits intonextfrom
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Bug report: get_block_header_at off-by-one in archive membership proof#252critesjosh wants to merge 2 commits intonextfrom
critesjosh wants to merge 2 commits intonextfrom
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… bug Demonstrates that the Noir oracle's archive membership proof always fails because the node's #getWorldState resolves a BlockHash to getSnapshot(N) (post-block archive) instead of getSnapshot(N-1) (pre-block / last_archive). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
get_block_header_at()always fails in private functions on4.0.0-devnet.2-patch.1with"Proving membership of a block in archive failed"aztec-node/server.ts#getWorldState()— resolvesBlockHashtogetSnapshot(N)(post-block archive) instead ofgetSnapshot(N-1)(pre-block /last_archive)scripts/repro_block_header.ts) and detailed report (scripts/REPORT.md)Test plan
yarn repro:block-headeragainst local network to reproduceAZTEC_ENV=devnet yarn repro:block-headeragainst devnet to reproduceaztec-packagesresolves the issue🤖 Generated with Claude Code