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.
U Network is a revolutionary protocol for publishing and valuing online content that helps online content platforms better align with the interests of their users. It does this by rewarding content creators more for their work, by letting users earn money for predicting popular content, by making it easier to discover high-quality content, and by allowing all users to be part of content moderation and governance decisions. The first online content community powered by U Network will be U Community, a digital asset information community. In 2015, U Network team launches SV Insight, a Silicon Valley tech media company with over 4 million subscribers. In the year 2017, U Network team develops blockchain educational content together with Huobi, attracting over 30,000 paying users. Besides, U Network team launches a smart contract developers boot camp, training over 300 blockchain developers.