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.
The VideoCoin Network is a decentralized video infrastructure platform redefining the process for creating, storing, and distributing digital video content. The project is led by the VideoCoin Development Association Ltd. (Cayman Islands). Powered by a large-scale, distributed video infrastructure, the VideoCoin Network will usher in 'the new cloud,' by marshaling underutilized computing resources from around the world to revolutionize video services with blockchain technology. The VideoCoin Network ecosystem will lower costs by deploying unused compute resources and peer-to-peer video distribution, enabling a new generation of applications via open APIs and open source-based development, with increased privacy using decentralized, end-to-end encryption. The VideoCoin Network is the first blockchain project to integrate a third party fiat payment processor, underpinned by a consortium of banks. The model is optimized to enhance the utility of the VID as a reputational staking token that powers the network and ensures that the most qualified network operators are serving customer needs.