Update EIP-7742: specify header RLP encoding and placement of target_blobs_per_block #10850
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Tsukimarf
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g11tech
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| For a genesis block with no existing parent, the value should be set according to the agreed specification for the | ||
| target blob count given by that genesis block's protocol rule set. | ||
| For the first post-fork block, `parent.blob_gas_used` and `parent.excess_blob_gas` are evaluated as `0` as in EIP-4844, and the parent’s `target_blobs_per_block` is provided by the consensus layer and committed in the parent header per the RLP encoding above. |
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this seems to need author confirmation
also the EIP is stagnant, unless you wanna revive it there is no point making material changes to the technical content
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This change specifies the exact RLP encoding of the execution header when introducing target_blobs_per_block, placing the new uint64 field at the end of the header after parent_beacon_block_root in line with how other EIPs extend the header (e.g., EIP-4788, EIP-7591). It clarifies the type and minimal big-endian RLP encoding, aligns “first post-fork block” terminology with EIP-4844 initialization rules, and states the Engine API/serialization invariant that consensus clients must provide target_blobs_per_block and execution clients must serialize it per the defined RLP layout. These additions remove ambiguity for implementers and ensure deterministic serialization and cross-client compatibility.