What is Nostr?

Public Key
npub1s755zk3yh5nlhu475jlrjfcec0hmds87gucy9csp2skpnul05dnq3ywwxn
NIP-05 Address
science-and-tech_at_fedi.khinsen.net@mostr.pub
Profile Code
nprofile1qqsg022ptgjt6flm72l2f03eyuvu8makcrlywvzzugq4gtqe70h6xesdasgcu
Author Public Key
npub1s755zk3yh5nlhu475jlrjfcec0hmds87gucy9csp2skpnul05dnq3ywwxn