What is Nostr?

Public Key
npub1s5cmkc7lhcsku9qwmpg8kwr83a5y4en7psr9z247tgv72rcdk8psy7c27z
NIP-57 Address
heatedman92@walletofsatoshi.com
Profile Code
nprofile1qqsg2vdmv00mugtwzs8ds5rm8pnc76z2uelqcpj392l95x09puxmrscw8vx5l
Author Public Key
npub1s5cmkc7lhcsku9qwmpg8kwr83a5y4en7psr9z247tgv72rcdk8psy7c27z