Sv2 needs a `submitBlock` IPC method #34626

issue plebhash opened this issue on February 19, 2026

plebhash commented at 3:08 PM on February 19, 2026: none

currently, IPC mining interface only allows broadcasting blocks via BlockTemplate.submitSolution

a Sv2 Job Declarator Server can receive solutions via PushSolution message, for which it has no corresponding BlockTemplate on the Bitcoin Core side

in summary, we need the equivalent of a submitblock RPC

cc @ryanofsky @ismaelsadeeq @Sjors
fanquake added the label Mining on Feb 19, 2026
fanquake added the label interfaces on Feb 19, 2026
Sjors commented at 3:43 PM on February 19, 2026: member

This should be trivial, but I would file this under nice to have, not "need". It would allow a client implementation without any RPC code, which is nice.
plebhash commented at 5:43 PM on February 19, 2026: none

This should be trivial, but I would file this under nice to have, not "need".

well, not having this available forces SRI to take a hybrid IPC/RPC route for full Sv2 JDS functionality, which is pretty ugly

so from our standpoint, I'd lean more towards the "need"

but I understand there could be other priorities compared to this
w0xlt commented at 9:38 AM on February 21, 2026: contributor

I’ve opened PR #34644 for this. I’m not very familiar with the IPC interface, but it looked straightforward. Happy to adjust if needed.
ryanofsky closed this on May 28, 2026
Fabcien referenced this in commit 896eaacd91 on May 28, 2026

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