Bitcoin full node and query server

Sep 8, 2025

View in context in the libbitcoin Slack #general mirror.

jungly09:04
Did you see Core's move to use capnproto for IPC stuff? Their push approach to getblocktemplate is interesting. Though, it seems like the docs on the IPC changes are a bit lagging.
2 replies · evoskuil, jungly · last Sep 09, 2025
evoskuil02:31
No, Whats interesting about it?
jungly11:11
The capnproto stuff is about optimised (de)serialisation. I am not too excited about it tbh. However, switching from pull getblocktemplate to push is interesting. As things stand, we wait for a blockupdate on the zmq publishing endpoint and then fetch a blocktemplate. The change to push, eliminates this round trip and bitcoind now pushes blocktemplates when certain well defined criteria are met. It is a slight optimisation, but it is in the mining loop, so could be important.