✨ verifyBlockHash + toShortHeader #1483
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0xClandestine
commented
Sep 1, 2025
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| // cast block 23270177 --raw | ||
| // vm.getRawBlockHeader(23270177) | ||
| bytes private constant _ETH_BLOCK_23270177 = |
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Fork tests are preferred, not sure how you handle them though.
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Need to bump forge-std to support vm.getRawBlockHeader.
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i think we’ll just fake it for now.
when we are really free, we can add a CI that does fork testing.
0xClandestine
commented
Sep 1, 2025
| /// @solidity memory-safe-assembly | ||
| assembly { | ||
| calldatacopy(mload(0x40), header.offset, header.length) | ||
| if iszero(eq(result, keccak256(mload(0x40), header.length))) { |
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Is xor more efficient here than iszero + eq?
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0xClandestine
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0xClandestine
commented
Sep 4, 2025
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anything else needed on this? |
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Oct 6, 2025
* ✨ verifyBlockHash + toShortHeader (#1483) Co-authored-by: clandestine.eth <[email protected]>
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Description
Adds minimal block header utilities for state proofs + light client implementations.
Added
BlockHashLib.verifyBlockHash(blockHeader, blockNumber)Validates RLP-encoded headers against
BlockHashLib.blockHash(blockNumber).Added
BlockHashLib.toShortHeader(blockHeader):Efficiently extracts relevant fields from RLP-encoded block headers for MPT proof verification, without full RLP-decoding.
Checklist
Ensure you completed all of the steps below before submitting your pull request:
forge fmt?forge test?Pull requests with an incomplete checklist will be thrown out.