I don’t know if this is the answer you’re looking for because it’s not tied to a cryptocurrency but take a look at nostr: https://github.com/fiatjaf/nostr https

I don’t know if this is the answer you’re looking for because it’s not tied to a cryptocurrency but take a look at nostr: https://github.com/fiatjaf/nostr https://github.com/fiatjaf/nostr It’s a protocol that allows nodes to gossip event messages amongst each other. The event relays can be used as a backend to provide data to your web/desktop/mobile apps.