Yeah, I just searched a bit and found this https://stackoverflow.com/questions/28348678/what-exactly-is-the-info-hash-in-a-torrent-file
The torrent file contains the hashes of each piece and the hash of the information about the files with the hashes of the pieces, so they have complete validation of the content and amount of files being received.
I wonder if the clients only validate when receiving or also when sending the data, this way maybe the seeding can be stopped if the file has been corrupted instead of relaying on the tracker or other clients to distrust someone that made a mistake like the OP of that post.
I use https://lemmyverse.net/
You can search for all communities of all instances, or click in a specific instance.
https://lemmyverse.net/instance/programming.dev/communities