title: How does Torrentz.com find different trackers for same torrent?
body: <p>I want to know the logic behind such comparison. Same is being done by BtReannouncer.net</p>
  
  <p>Do the torrents have similar hash or do they compare it by size and name?</p>
  
  <p>Most torrents on piratebay do not have trackers other than piratebay, but torrentz.com provides a complete list of all the trackers that are tracking the same torrent.</p>