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.
'DigitalNote describes itself as a decentralized Proof-of-Work(bmw512)/Proof-of-Stake(echo512) hybrid blockchain with fast, untraceable transactions and encrypted messaging features. The network is reportedly resistant to 51% attacks via its VRX v3.0 technology and it is mobile-ready with lightweight wallet functionality. A masternode network reportedly enhances untraceability and provides incentive for users to secure the network, whilst enabling fast private transactions and P2P messaging that are difficult to trace or censor. Miners and stakers are encouraged to participate via network fee payouts, facilitating consistent block generation and a fast network. DigitalNote was originally released as ''duckNote'' by an anonymous individual or group of individuals under the pseudonym ''dNote'' in 2014. Over the years more advancements were added to the protocol, with each major upgrade rebranding the name of the protocol (first ''DarkNote'' and then ultimately ''DigitalNote''). Much like Bitcoin's ''Satoshi Nakamoto'', the original founder(s) vanished in 2017, leaving the open source code to be updated by a community team who have since continued development.'