https://www.tribler.org/, which is developed by a not-for-profit research group supported by EU and Dutch research funding, does distributed torrent search without any central server. It's been around for almost a decade now.
If anyone is interested https://github.com/Tribler/tribler/wiki link contains more information.
I'm surprised I didn't hear of this project before.
Thnx for mentioning us btw! With 13 years running and our bandwidth token for Bittorrent (no ICO) it seems we're the only team left doing innovations. All other p2p teams seem to have died in the p2p winter.