Tor Onions are technically an alternative. You access the hash of the public key? and you are only able to put up that URI if you have control over the private

Tor Onions are technically an alternative. You access the hash of the public key? and you are only able to put up that URI if you have control over the private key. I guess something similar based on hashing and public key cryptography might be possible outside of Tor but it's not exactly user friendly to begin with.