Npub1gdu7w6l6w65qhrdeaf6eyywepwe7v7ezqtugsrxy7hl7ypjsvxksd76nak that should be the public key of Saifedean Ammous e.g https://nostr.build/i/nostr.build_578eefa8cab35232532f1ee36100ff255596e5e1b9cde26...