I used to run a VPN service, and at the time the only legal requirement was that you register your DMCA contact and that you make a best-effort attempt to deliv

I used to run a VPN service, and at the time the only legal requirement was that you register your DMCA contact and that you make a best-effort attempt to deliver the request. I forwarded those requests to the user's email address if the user was identifiable, but since I didn't track anything I couldn't really deliver them. That was it. You might want to check what the law actually says. I don't think there's a lot of case law around DMCA requests yet so the shape of the law probably hasn't changed much, but I don't pay attention to it so I'm probably wrong.