Grin coin is a private & lightweight open source project based on the mimblewimble blockchain implementation. MimbleWimble is a lightweight blockchain protocol proposed by anonymous author that goes by the name Tom Elvis Jedusor (inspired by Harry Potter) in July 2016. Since then, the proposal has gained a huge following among Bitcoin and privacy advocates. Unlike bitcoin or ethereum, there are no addresses in Grin. In order to transact using Grin, both wallets must communicate with each other online with the results broadcasted to the network. Another key different is that transaction history (sender, receiver, amount) will not be recorded on the blockchain. Due to the removal of these information from the transaction, the data size remains small and that keeps the blockchain lightweight. New nodes can easily join the network without having to download a large blockchain. Grin coin was launched without an ICO, fundraising, or pre-mine. Developers around the world contribute openly with the goal to ensure the coin distribution remains as fair as possible. There are 2 popular wallets widely available to interact with the Grin network. Grin core wallet: https://www.coingecko.com/buzz/how-to-use-grin-wallet-to-send-receive-grin-coins Wallet713: https://www.coingecko.com/buzz/how-to-use-grin-wallet713-to-send-and-receive-grin-coin-step-by-step-guide The consensus algorithm used by Grin is the Cuckoo Cycle proof-of-work based. There are 2 hashing algorithms involved with Grin. Cuckoo-29 is meant for GPU mining while Cuckoo-31 is meant fo ASIC mining. This is a deliberate design to encourage miners to eventually move into ASIC mining for efficiency while keeping it fair at the beginning of the launch. Grin coin has launched its mainnet on 15th January 2019 and is now available for mining and trading.
Utilizing a community of world-class developers, managers, marketers and researchers, the Apollo community, backed by the Apollo Foundation, has set out to accomplish the goal of making Apollo the most technologically advanced, feature-rich currency on the market. The Apollo Foundation understands the demands of a top tier cryptocurrency and they believe they can create a coin that will integrate everything necessary to replace the current currency options. Having started from NXT, a proven cryptocurrency, the Apollo Foundation will continue development with the goal of being first all-in-one cryptocurrency, innovating and incorporating every ability that could be beneficial in a digital currency, all in a single decentralized platform. The first major update, Olympus Protocol, puts mass adoption-proof privacy at Apollo's core. This is because the Apollo Foundation knows the ability for a user to buy, sell, trade and send in absolute secrecy is vital in an industry that could be moments away from intense regulation. The Apollo team is here because they believe the only person or entity that should be in control of your funds is you.