[m-p-3]

BitTorrent v2 also includes a per file hash tree https://blog.libtorrent.org/2020/09/bittorrent-v2/

so I assume that if you end up with the same file in multiple torrents, you'll be able to grab the files from seeds of these other torrents.

[retonato]

It would be interesting to see if that standard replaces Bittorent v1. For now it is not nearly as popular (everyone just uses v1, I don't know about any site, which has any significant number of v2 torrents).