I would think it'd be possible to "have a look" (download) what the torrent contains for "legal proceedings" or something like that? I'm not a good source on this as I hate torrents but the few times I've used them I think I could see at least some IPs of people sending me bits in the torrent client; so I figure they'd do the same. Ehm, there's also something like torrent trackers, which are used by torrent clients for stuff? Someone with more experience of torrenting Linux distros and more legal things can probably explain this a lot better. I open the floor to thee, my brethren who are more inclined to share them distros.