NPCcoin is a cryptocurrency utility in the market and popular in online businesses. Your NPC platform provides this currency when you perform tasks that generate web traffic, generating advertising benefits and repurchasing the coins. NPCcoin uses a hybrid PoW and PoS design for coining. PoS pays up to 30% annual benefit. Fast, safe, ecological and profitable.
Quarkcoin is a coin which increases security by using 9 rounds of hashing from 6 different hashing algorithms - blake, bmw, grøstl, JH, keccak, skein. 3 of the hashing rounds apply a random hashing function. This compares with Bitcoin's solitary use of SHA-256 algorithm. There is no pre-mine for this coin. A new block is generated every 30 seconds and 2048 Quark is given out as reward per block at the beginning. This reward halves every 60480 blocks or roughly every 3 weeks. The initial supply of Quark is 247 million and this is expected to be mined in roughly 6 months since launch date. The supply will then continue to increase at an inflationary rate of 0.5% per year. Quarkcoin was launched on 21 July 2013.