The DHT exists, all you need is an infohash and you get grab the metadata from peers/uploader. libtorrent supports something called 'SSL' torrents that require

The DHT exists, all you need is an infohash and you get grab the metadata from peers/uploader. libtorrent supports something called 'SSL' torrents that require both peers to be signed by the same root. All the pieces are there to build on top of.