The Pirate Bay should commit all its magnet files to git; you then have a distributed, versioned hash library.

Then, build a package that lets you seek out one of the repos, pull it, and integrate it with your Torrent client.

Alternatively, you could hide the hashes in TXT records of domains no one knows about. Cached, resilient magnet hash records.

That's pretty awesome. So... how does one convert those records into something you can feed into a client?

You can feed magnet strings straight into any client already.

The magnet archive torrent doesn't actually contain the magnet links, just the hash. To use the hash, you prepend:

  magnet:?xt=urn:btih:

to the hash found in the archive.