Yes nostr
But anywhere.
Text message for example.
Example:
Sovereignwelder.com
Justin
npub12x…tstqx
2024-01-12 01:45:52 UTC
in reply to nevent1q…dmem
Author Public Key
npub12xamzh3hapdspk98dqmmdd4rx4w3m30vtz7apuuq3jdd8dm6y2gq9tstqxSeen on
wss://nos.lol