Sunny King

From CryptoWiki

"King is known as the “grandfather” of the consensus algorithm proof-of-stake (PoS) because Peercoin was the first hybrid proof-of-work (PoW) and PoS system. The unknown blockchain engineer not only created Peercoin but he also developed the Primecoin project, which uses a PoW mechanism while it searches for prime numbers at the same time.

King’s Peercoin PoS concept has inspired many other blockchain projects that use the PoS consensus algorithm. The Peercoin creator disappeared for quite some time but has recently returned with another blockchain project called Vee.tech."