I vibed up a rust library to do this. Nobody uses it afaik. I need a network of sovereign mining pools for my purposes, so it's a ways off from being useful.

What do you intend to use it for?

published crate
https://crates.io/crates/bitcoin-nostr-relay

source
https://github.com/vnprc/bitcoin-nostr-relay

test env
https://github.com/vnprc/tx-relay-playground

contributions welcome, i heard ZMQ was faster than RPC 👀
https://github.com/vnprc/bitcoin-nostr-relay/issues/5