What is Nostr?
xn /
npub1h3h…6uvp
2022-12-23 12:38:13
in reply to nevent1q…ljp7

xn on Nostr: NIP-05 ties your nostr identity (public key) to a web server at which you have the ...

NIP-05 ties your nostr identity (public key) to a web server at which you have the ability to publish your public key.  This could mean you own the domain hosted by the web server or that you are a customer of a service at that domain that allows publishing  public key/username mappings.
Author Public Key
npub1h3hs3vmrp5d0hm6zmdqvvegwh3nxmcqnztwlulryg0wz8l5eqhzqn56uvp