We don't know what nodecast is, could you share?
It is not using nodecast, this is relying on a nostr-native NIP that was authored by nostr:nprofile1qqsph3c2q9yt8uckmgelu0yf7glruudvfluesqn7cuftjpwdynm2gyghcswp5. It doesn't rely on any external APIs or services, which is why it's so good!