Ethereum Draft Would Bundle Transaction Proofs for Sponsored Payments

Ethereum contributor Marchhill submitted draft PR 12664 on Nov. 13, proposing a way to verify sponsored transaction batches with one proof while preserving each transaction’s payment and signature.

Under the design, builders could choose any valid set of batch members for a block without requiring new signatures. Each transaction would keep its nonce and receipt, while payment matching would be checked during finalization. The proposal would use LEANSTARK_SCHEME, a proof scheme reserved under EIP-8288. The earlier proposal on aggregating proofs across Ethereum’s mempool provides related context.

PR 12664 lists provisional gas charges of 15,400 for native verification, 572,000 for general verification, 5,100 for an intrinsic proof share, 675,000 for a leaf payment and 4,200 for a batch claim. The values still need joint calibration.

The draft replaces PR 12654 and has not received an EIP number or an associated discussion thread. It has not been adopted as an Ethereum upgrade. Full-block performance testing is required before activation, and the draft gives no target date for mainnet activation.