I suppose you could have blockchain DNSes. Indeed, attempts have been made. Of course, then you get the same problems as with cryptographic coins, where getti

I suppose you could have blockchain DNSes. Indeed, attempts have been made. Of course, then you get the same problems as with cryptographic coins, where getting 51% of mining resources lets you double-spend, which for DNS would mean letting you MITM specific targets. And guess what governments would do about that? Repeat after me: rubber hose cryptanalysis is unbeatable / cryptography cannot solve political problems.