http://dwebkjkovsjobzrb45dz6prnlifnapiyp2dba33vcmcsaikr2re4d5qd.onion/knowledge/what-is-v3-onion-address
Create a SHA3-256 checksum, which is made up of the constant ".onion checksum", the ED25519 public key, and the version string "\x03". Take the ED25519 public key, the first 2 bytes of the checksum, and the version string "\x03", and convert them into a base32 hash.