http://ttevhjjsjxz6uqqcjkbig5cycd7n7xv7cmd6f5fcvrqaaa7f3bj36wad.onion/technology/security/pow/index.html
This can be
considered as written by many hands and the overall works is available thanks
to the following people (see tpo/core/tor!702 for details): Thanks tevador for the underlying PoW algorithm, Equi-X. George Kadianakis, Mike Perry, David Goulet, and tevador for the Proof of Work for onion service specification this implements.