Earlier quoted context omitted.
There's definitely a mens rea requirement here, that you know that a crime is being committed and that you intend to facilitate it. I doubt it requires particularized knowledge that "this specific request" is for a crime... I'm still not a lawyer. Running a service primarily for legal purposes that some criminals can take advantage of is pretty different with regards to intent than reviving an old domain name that yo…
IANAL, but I would think you’d also have to have specific mens rea. That is, it’s not illegal to use a torrent or facilitate a torrent, because it’s just a protocol that can be used for good or bad. If you were hosting movies and songs, whatever the protocol, that’s when you’re specifically engaging in piracy. It’s sort of like driving a car isn’t illegal, but being the getaway driver for a bank robbery is, even if y…
Here it's not the "mere fact that somebody could use your tracker for piracy". It's that you're literally observing that a bunch of old mostly-piracy torrents are pointing at this domain, and then deciding to turn this domain back into a service which assists in that piracy.