Comment by wolfgarbe
The most widely used DHT is Kademlia from Petar Maymounkov and David Mazières. It is used in Ethereum, IPFS, I2P, Gnutella DHT, and many other applications.
https://en.wikipedia.org/wiki/Kademlia
https://pdos.csail.mit.edu/~petar/papers/maymounkov-kademlia...
https://web.archive.org/web/20120128120732/http://www.cs.ric...