Sv2 needs a submitBlock IPC method #34626

1. 
   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

2. fanquake added the label Mining on Feb 19, 2026
3. fanquake added the label interfaces on Feb 19, 2026
4. 
   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.
5. 
   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

6. 
   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.

Contributors
plebhash Sjors w0xlt

Labels
Mining interfaces