Huh, #DNS over #blockchain (or more general DNS that is based on cryptography)… It's an interesting idea especially for the root DNS servers, but there is a fundamental problem:
Key management.
The article I read used youtube.com as an example. What if an attacker obtains the private key for this domain? He can now control it or even transfer it.
Right now, you can get a court rule that undoes that. But with DoB this would mean everyone has to learn a new domain. Good luck with that…