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.
Metaverse is a leading public blockchain based in China. Designed to facilitate low-cost, convenient transfer of digitized personal data and assets with unprecedented security and privacy, Metaverse aims to revolutionize the way financial services and transactions are processed, and to improve outdated and inefficient identity verification services with a network of Digital Assets, Digital Identities, and Oracle intermediaries. Metaverse is an open-source public blockchain that provides digital assets, digital identities and Oracles as a foundational infrastructure for social and enterprise needs. Through Blockchain-as-a-Service (BaaS), we make convenient, secure digital financial services accessible to all applications at virtually no cost. Founded in 2016, Metaverse went live in February of 2017. We strongly believe that blockchain technology is the catalyst for a better future - the New Reality. The concept is building a network of smart properties and a decentralized exchange for a smart and secure infrastructure. It already has dApps like Supernova running on the mainnet, and cross-chain compatibility with ERC-20 tokens is right around the corner in the project’s development roadmap. Metaverse ETP is used to value or collateralize smart contracts on the Metaverse blockchain network. It’s also used to pay transaction/gas fees. ETP is generated through PoW mining. It’ll soon introduce a PoS model to the platform. Metaverse supports digital identities, assets, oracles, and exchanges, making it a versatile blockchain 3.0 solution. Its development ecosystem already has a gold-backed crypto trading app on the market. Many more are in development for release before 2020. ETP is tradeable on a wide array of crypto exchanges. Its current PoW model will soon be supplemented by a PoS hybrid.'