If you own a name in the existing root zone, or the Alexa top 100k, or you reserved your name through a trademark claim, it is waiting for you on the blockchain. You are able to claim it by publishing a DNSSEC ownership proof – a cryptographic proof that you own the name on ICANN’s system.
List Alexa 100K: https://handshake.rsvp/
link: https://hsd-dev.org/guides/claims.html
youtube: https://www.youtube.com/watch?v=32Oi65rhdfE