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Update blob hint data specification in fault-proof docs #890

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pauldowman merged 1 commit into from
Mar 5, 2026
Merged

Update blob hint data specification in fault-proof docs #890

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5 changes: 2 additions & 3 deletions specs/fault-proof/index.md
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Expand Up @@ -418,11 +418,10 @@ prepare the RLP pre-images of each of them, including receipts-list MPT nodes.

Requests the host to prepare EIP-4844 blob data for fault proof verification.

The hint data consists of 48 bytes concatenated together:
The hint data consists of 40 bytes concatenated together:

- Bytes 0-31: Blob version hash (32 bytes) - the keccak256 hash of the KZG commitment with version byte prefix
- Bytes 32-39: Blob index within the block (8-byte big-endian uint64)
- Bytes 40-47: L1 block timestamp (8-byte big-endian uint64)
- Bytes 32-39: L1 block timestamp (8-byte big-endian uint64)

The host will:

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