I just add a TXT record like:

https://digwebinterface.com/?hostnames=relayable.org&type=TXT&useresolver=8.8.4.4&ns=all&nameservers=

it's just a simpler way of saying your npub

f7z.io > npub1l2vyh47mk2p0qlsku7hg0vn29faehy9hy34ygaclpn66ukqp3afqutajft

it doesn't mean anything more than that

the mistake is in attributing any kind of verified-status to it