The same question was archived on r/trackers. Would like to get notified when a compatible tracker is available for testing, it’s not even clear if there is an implementation just yet.
The specs are here since 2017 https://www.bittorrent.org/beps/bep_0052.html
Compatible clients are available, at least qBittorrent (from v4.4.0) and BiglyBT.
All site admins would need to do is increase the torrent hash length in the tracker, if it is a new tracker site. I actually recommended to use bittorrent v2 to the fappaizuri guys when they started it. The response was: Well, it works with v1 as well, soo ¯\(ツ)/¯