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.
A creator-driven, blockchain-based ecosystem for content creation, distribution, and consumption POPCHAIN is a bottom-driven open, public block chain. It is committed to building a block chain 3.0 with supporting services and rapid solutions in creative field. It focuses on block chains and key AI technology such as main node, POP domain name, side chain, consensus mechanism and smart contract. POPCHAIN boasts solid business logic and eco-industrial carrying capacity. It helps enterprises for digital assets and fan economic operation. Consumption scenarios such as content distribution and scene services form an industrial digital asset operating cycle, providing copyright protection, content distribution, IP rights, big data, AI cloud brokerage and other supporting services. POPCHAIN provides a friendly API that allows third-party developers to build their own applications (DAPP) on the basis of their open source protocols. POPCHAIN can be widely used in live broadcast, advertising delivery, code sharing, games and other fields. It revolutionizes and reshapes these areas, So that the center between entertainment developers and consumers no longer dominate resource and value transfer.