Open trackers like this don't distribute the torrent files themselves-- all they do is help you find the swarm for a torrent given a hash as input. A magnet ha

Open trackers like this don't distribute the torrent files themselves-- all they do is help you find the swarm for a torrent given a hash as input. A magnet hash is little more than a hex-encoded infohash along with a few trackers to use for coordination and a filename wrapped in a URI, so DNS TXT wouldn't provide much compression (~30B DNS record to ~200B magnet URI). Given an infohash, a torrent client has to find a swarm member (or DHT) to download the full torrent metadata.