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.
MomoCash is an innovative cryptocurrency. A form of digital currency secured by cryptography and issued through a decentralized and advanced mining market. Based on Dash, it's an enhanced version, featuring the masternode technology with 50% Reward, near-instant and secure payments as well as anonymous transactions. Momo is an experimental new digital currency that enables anonymous, instant payments to anyone, anywhere in the world. Momo uses peer-to-peer technology to operate with no central authority: managing transactions and issuing money are carried out collectively by the network. MomoCash Core is the name of the open source software which enables the use of this currency. The emergence of blockchain-based decentralized digital currencies woke up hopes for the beginning of a better world. A world, where wealth is distributed fairly without control and influence of a powerful middleman. Although blockchain technology equipped us with a perfect tool to make this dream come true, it will not happen by itself. The concept of a socially responsible cryptocurrency inspired us to create Ultima - a platform designed to support endeavors of its community in various areas. The Ultima Multi-Module Platform (MMP) includes functionalities ranging from a digital marketplace to crowdfunding and charity components. By working together on noble causes we will regain the faith in cryptocurrencies.