“Because .ETH names are native to ENS, ENS is the only source of truth for who owns a particular one, and no admin powers exist in ENS to take away a user’s .ETH name. Such admin powers do ultimately exist, however, for DNS names on ENS. Because whoever owns the name on DNS can always claim the corresponding name on ENS, the ultimate security of a DNS name on ENS depends on the security of the name on DNS.”