Deep Coin (DCN) started in 2014 and finished in 2015, with a total supply of 62 million coins. The team/founder is hidden, The main reason this coin was listed is desertion.

(from old site) DEEPCoin is an intuitive proof of work coin that takes proven technology and software and brings new and exciting functionality to benefit the end-user. Featuring our signature DEEPHash algorithm--comprised of Luffa512, CubeHash512 and Echo512—mining DCN yields a much higher hash rate, several times higher than the previous algorithm at a lower TDP. We are committed to creating a unique coin for people to use and position ourselves with an energy efficient hashing solution that will not readily be picked up by ASIC miners.