nostr:note1xkrmjenjy5ly8zhpltwy04jmsz20nm8raddsgj4mw74zkvgawcaqtjevfq
Did some research. I do thinks this is very possible. But it wouldn't rely on NOSTr as much as I was thinking.
It looks like clients can use web torrent to facilitate this:
Discussion
Well something like this. Web based clients have web torrent. There must be other libraries for other languages.