Hmm nostr:npub1xtscya34g58tk0z605fvr788k263gsu6cy9x0mhnm87echrgufzsevkk5s said the primal server was proprietary but after looking further I found it here: https://github.com/PrimalHQ/primal-server

I don’t see anyone else running one, but technically relay operators could run this alongside their relay to service Primal users.

Although, it feels like a fork of nostr. Users can’t connect to normal nostr relays — therefore it isn’t backwards-compatible. The way we built Nestr was:

1) You can pull notes from normal relays

2) You can only pull the Merkle trees and blossom blobs from blossom servers and HORNET Storage servers

We preserved backwards-compatibility. Primal compromised on backwards-compatibility.

And there’s literally no documentation on how to change which relays the cache pulls from. 🤦‍♂️ It wasn’t built with other people easily running it in mind.