EIP-7872 - Max blob flag for local builders

Abstract

This EIP adds a flag to the block builder in order to allow them to include a client configured maximum amount of blobs. This is an execution layer only change.

Motivation

Currently a builder will include all blobs in their local mempool, up to the maximum amount that the protocol requires. If a builder has low bandwidth, they may include too many blobs and subsequently end up not being able to convince the network that the blobs are available.

Specification

• Create a parameter in block builder's configuration called USER_CONFIGURED_MAX_BLOBS_PER_BLOCK
• Take the minimum out of the MAX_BLOB_GAS_PER_BLOCK and the USER_CONFIGURED_MAX_BLOBS_PER_BLOCK
• If the minimum is zero, set the minimum to one.
• Use the minimum to decide how many blobs to include in the block

Note: By default USER_CONFIGURED_MAX_BLOBS_PER_BLOCK may be set to the maximum in the current fork.

Rationale

By adding a flag for the local block builder, they are able to specify how many blobs they can include in a block.

Backwards Compatibility

No backward compatibility issues found.

Security Considerations

N/A

Copyright

Copyright and related rights waived via CC0.