Interesting. Ill look through the different nips at some point soon, thank you. So if I have a checkmark already I don't need to do this?
I mean nip05 is a feature to attach a name@address.com to your pubkey... so that is why I send you mynostr.fun but there are others. nostr-check.com for example. and others you need to pay like nostrplebs.com . these websites allow you to display a nip05 address and a checkmark twitter-like in your profile. check https://nips.be/5 oficial nostr protocol to know more hehe
Discussion
you don't need a checkmark aka nip05 at all, do you ? it depends on you.