Ethereum contributor Marchhill submitted PR 12664, proposing batch proof sponsorship payments

Odaily Report: On November 13, Ethereum contributor Marchhill submitted draft PR 12664 to the EIP repository, proposing to enable generic proof verification and sponsored batch processing, allowing multiple transaction claims to share a single proof while retaining their respective payments and signatures. The draft plans to enable the LEANSTARK_SCHEME reserved under EIP-8288, allowing builders to include any valid subset without requiring members to re-sign; the nonce and receipt of individual transactions remain unchanged, with payment matching verified at finalization. Tentative billing parameters listed in the draft include: native verification 15,400 gas, regular generic verification 572,000 gas, intrinsic proof share 5,100 gas, leaf payment 675,000 gas, and batch claim 4,200 gas, which still require joint calibration and do not constitute final rates. This draft supersedes the previous PR 12654 and has not yet been assigned an EIP number or discussion thread, nor has it been adopted as a network upgrade; there is currently no mainnet activation date, and full-block performance testing must be completed before activation.