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.
Coin 999 will support multi payment systems, with tracked listing in coin market Cap its very clear its having great Future & it will improve the crypto payment system around the world as easy as using cash or credit cards or mobile wallets, users will simply recharge the wallet with balance and they will get great discounts from well-known retailers and e-commerce platforms