DRM is unnecessary - what you're describing sounds like a variation on FreeNet, MUTE, WASTE etc. Contributory liability would still be present if movie companie

DRM is unnecessary - what you're describing sounds like a variation on FreeNet, MUTE, WASTE etc. Contributory liability would still be present if movie companies could prove you were distributing encrypted copies of their films. The main problem I would foresee is swarm security. If you're sharing your videos out to a wide audience, then the encryption isn't going to help. Your adversary isn't a passive deep packet inspection filter, it's copyright owners joining a swarm through normal means in order to IP addresses of people who are distributing content. The no-sharing-keys property isn't useful either. Presumably someone is going to want to archive PeerTube content (P2P swarms tend to archive poorly), which means modifying PeerTube or a browser to scrape keys. If an archivist can do this, so can a copyright enforcement bot. What you would really want is something more akin to Tor, where both ends of each peer connection don't know who each other are. The way this works is by using multiple layers of encryption, so each link in the chain just knows where to send which packets of nonsense. You can do this today, actually, but BitTorrent-over-Tor is heavily discouraged as speeds are slow even at low hop counts. There's also the problem of accidentally leaking your own IP address over Tor. This is why, for example, most VPNs ship browser extensions that disable P2P features such as WebRTC.