Novacoin is a hybrid Proof of work (POW) / Proof of stake (POS) decentralized peer-to-peer cryptocurrency.The Proof of Work part of Novacoin is based on the Scrypt hashing algorithm. Proof of Stake contributes to the coins energy efficiency, as there is no need for nodes to contribute mining power to part of the money creation process. As of now, Novacoin is set to be capped at 2 billion coins. However Novacoin stated that the cap limit may be lifted if the situation requires it. It looks very much like a variation of Sunny King Peercoin.
COVA is a new paradigm for data to be used as capital. Data is quickly becoming the most important asset in the world, yet currently there is no infrastructure to control how it is used. COVA provides a unique solution to this dilemma and allows data owners to take advantage of the commodification of data