I added NIP05 to my nostr account using the whole domain (without username). So now I have a nice pinkish checkmark and "urza.cc" after my nickname in profile (at least that is how it looks on Damus).

It was very simple, following the guide by nostr:npub16jzr7npgp2a684pasnkhjf9j2e7hc9n0teefskulqmf42cqmt4uqwszk52

https://orangepill.dev/nostr-guides/guide-to-verify-nostr-profile-nip05-identifier-with-your-domain/