Thinking this through a bit more I'm seeing two possibilities.

1. Full torrent client + discovery. Will index and use nostr events to discover torrents. Will use nostr evens as a tracker to find and connect to new peers. Will handle downloading/uploading etc.

2. Nostr bridge, will act as a tracker following the existing protocol. But will get the information from nostr events. Existing clients will be able to connect to it as a normal tracker. Would still need a UI for discovery. (simpler) nostr:note1fy3dfqgn7wku4ncw8e3sa8n7e8w56ellk5x5mnzc79pg5ypm45mqnrdlc5