[WithinReason]

Can you do this to create a database of torrents for a torrent search engine?

[DaSHacka]

There are existing services like btdig that do this via DHT, I believe.

[sweeter]

You don't even have to go that far, you can just use torsniff. But be aware there is a lot of nsfw material and potentially illegal material for all I know.

[thunderfork]

Easier to just trawl the DHT, like btdigg