Distributed hash table - ButTorrent extension for discovering torrent's seeders by advertising its hash across known peer pool, think of it as a distributed tracker. Contrary to traditional way of asking a known tracker for peers of that torrent.

Its algorithm is very elegant, using binary search on peers' and torrents' hashes, narrowing down to peers that are more likely to be seeders (or at least know some).

https://www.bittorrent.org/beps/bep_0005.html

> The BitTorrent community has responded to these trends by deploying decentralizing tracking systems based on distributed hash tables (DHTs).

No it doesn't. Before you try to correct me, the abstract never counts ;)

Downvote all you want, but a fact is a fact: The article doesn't define the abbreviation before using it.