[6510]

An idea I had some time ago:

BitTorrent magnet uri's or hashes are suppose to be made from torrents but they really just point at a torrent.

One could make torrents for each video, take the youtube url v param and make a hash from that and point it ("erroneously") at the torrent.

That way, provided it was downloaded before, anyone who has the url can obtain the video.

The idea needs one more trick to validate the download. I suppose one could compare a chunk of yt to the same piece downloaded over BitTorrent but perhaps there are better ideas to be had.

Eventually, with tit for tad one could swap one chunk of one video with a chunk from a different video on the same channel.