http://dwebkjkovsjobzrb45dz6prnlifnapiyp2dba33vcmcsaikr2re4d5qd.onion/knowledge/what-is-v3-onion-address
Take the ED25519 public key, the first 2 bytes of the checksum, and the version string "\x03", and convert them into a base32 hash. The V3 Onion Address represents the next generation of Tor Onion Services. The introduction of this version has brought about numerous changes, among which the most noticeable is the revamped cryptography.