stop using deprecated /eth/v1/beacon/blocks / publishBlock(V1) beacon API endpoint #7438
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cheatfate
approved these changes
Sep 2, 2025
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https://ethereum.github.io/beacon-APIs/#/Beacon/publishBlock is deprecated with support disappearing likely across much of the ecosystem sometime after Fusaka forks on mainnet.
https://ethereum.github.io/beacon-APIs/#/Beacon/publishBlockV2 supports at least all the forks the non-V2 version does, even if one wants to use the VC in a pre-Electra network. Furthermore, none of the officially supported networks of Nimbus even involve producing pre-Pectra blocks anymore, so for those networks (Ethereum mainnet, Hoodi, Holesky, Sepolia, Gnosis mainnet, Chiado) it's already unused code.
One maintenance issue is that each time a hardfork is added, it adds 3 different places which have to be adjusted, which is why I'm looking at this while adding Glamsterdam.