BlackCoin started of as a Proof of Work coin but has evolved to a unique version of Proof of Stake. Wallet users can unlock wallet for staking only. BlackCoin features the following specifications: - Extremely secure: Among first with fix on SSL heartbeat, Transaction malleability, BIP66 - The probability to sign a block and the block reward does not depend on coinage (anymore). - Recommended confirmations: 10, maturity: 500 - Minimum transaction fee: 0.0001 BLK - Defined block time target: 64 seconds - Max reorganization depth: 500 blocks - Inflation: about 0.95%. - PoS block reward: 1.5 BLK + fees - The accumulated reward is proportional to the total balance and the time of staking. 24/7 staking at current network weight leads to an expected reward ratio (interest rate) of about 5%. - BlackCoin rewards users who supports the blockchain through continuous staking.
SmartCash is an easy to use, fast, and secure cryptocurrency that supports everyday use such as business payments. SmartCash has a unique decentralized governance system and technologies such as SmartNodes, InstantPay locked transactions in about a second, send by SMS and email, a project treasury with private key voting, SmartMining security, SmartCard, and it's Point of Sale app called SmartPay. SmartCash is pushing the limits of blockchain technology with tools that support entrepreneurship and innovation. Intended for use worldwide, SmartCash is available at ATMs, cryptocurrency shops in Canada and Europe, local exchanges and is especially popular in South America. In Brazil, 85% of retailers accept SmartCash with the SmartBand and is available at an additional 13,000 Caixa locations soon.