DNS is hierarchical, but that doesn't matter because it's effectively controlled by ICANN and big name registrars. "permissionless" is what we need, but you can

DNS is hierarchical, but that doesn't matter because it's effectively controlled by ICANN and big name registrars. "permissionless" is what we need, but you can only get there through decentralization. This is a perfect usecase for blockchain, because we need permissionless writes to a distributed ledger. The energy costs of running the blockchain would likely be equivalent if not less than the current system (what's the energy cost associated with running Godaddy?). An alternative would be to scrap the idea of memorable domain names all together, and move toward something like QRcodes + tor like public keys + petnames or similar.