Dmitry Khovratovich
He developed , together with Alex Biryukov , the Equihash Proof-of-work algorithm which is currently being used as consensus mechanism for the ZCash cryptocurrency , and the Argon2 key derivation function , which won the Password Hashing Competition in July 2015 . 
<triplet> ZCash <subj> Proof-of-work <obj> uses <subj> cryptocurrency <obj> instance of