It's like an email address. If you control a domain, you put a file in /.well-known/nostr.json that contains your name and public key. The NIP-05 identifier is that name@domain
See https://github.com/nostr-protocol/nips/blob/master/05.md
MikeDilgerTemp /
npub1l3…7qjfk
2022-12-10 23:08:53
in reply to nevent1q…5g2p
Author Public Key
npub1l3ft4k4jd4a9am3tqx7xuwl4q33497033qpq4smgkxkkl0fc9vqqp7qjfkPublished at
2022-12-10 23:08:53Event JSON
{
"id": "7c58b93930f70e7f605a92572681ffbde35db530e83beda9e64ef919dc2ee745",
"pubkey": "fc52badab26d7a5eee2b01bc6e3bf5046352f9f188020ac368b1ad6fbd382b00",
"created_at": 1670713733,
"kind": 1,
"tags": [
[
"p",
"93518a13dace462dd8702348332df8b2908b5eb032eae12d42c5b3b4d3b378fc",
"wss://nostr.onsats.org"
],
[
"e",
"67628285ab4e5c0de7d00f79d52183b56ea269ec68e251747e701627529de10e",
"wss://nostr-pub.wellorder.net",
"root"
],
[
"client",
"astral"
]
],
"content": "It's like an email address. If you control a domain, you put a file in /.well-known/nostr.json that contains your name and public key. The NIP-05 identifier is that name@domain\n\n\nSee https://github.com/nostr-protocol/nips/blob/master/05.md\n",
"sig": "d46c2d98a39f00f2196f8d8ceeed38c72b904c878ed3f5ff238c9389b1a4a08a5299e1984d540cab990be0c614466877d07cbf88a944a0bdb2086c144cca4582"
}