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.
V.SYSTEMS is a blockchain infrastructure provider with a focus on database and cloud services. Powered by the Supernode Proof-of-Stake (SPoS) consensus algorithm, each supernode is elected in a decentralized network according to Proof-of-Stake (PoS) principles, providing high performance minting, transaction processing and smart contract functions. VSYS is the native currency for the V.SYSTEMS blockchain platform with a multitude of uses including transactions, staking and minting on the network. V.SYSTEMS aims to deliver decentralized cloud database technology with high scalability, durability and performance. With Sunny King as the lead architect, V.SYSTEMS has already designed and implemented SPoS Consensus, a super efficient distributed consensus algorithm with the highest resistance to 51% attacks. The network plans to operate as a cloud platform based on modular systems that can support efficient and agile development of a vast variety of applications including but not limited to finance (DeFi), entertainment, social network and many more.