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.
Bluzelle is a decentralized, scalable database service that aims to provide an effective data storage solution for the newly emerging blockchain ecosystem. It provides a solution to the scaling problems that developers of decentralized applications (dApps) face while using centralized infrastructure and traditional cloud-based databases. Bluzelle uses reliable ”swarm” technology, in which it stores tiny bits of data in groups of nodes or “swarms” which are distributed across the globe. Since this makes it independent of single data centres, Bluzelle’s scaling ability is limitless. Bluzelle adjusts the number of nodes and their location dynamically, reducing request time and improving overall performance. Bluzelle's swarm technology makes it extremely reliable as it redundantly stores pieces of data across the globe, eliminating a single point of failure. Since there are no data centres, Bluzelle’s resources are provided by network “producers”, who earn funds and pass on the savings to users. Bluzelle held an ICO from January to February 2018, selling 33% of its total supply of 500 million BLZ tokens and earning $19.5 million USD in the process. As of July 2018, Bluzelle has a circulating supply of about 183.02 million BLZ, with an individual price of $0.328 and consequently a market cap of around $60.25 million USD. The potential of an endlessly scalable storage service which is quick in its scaling, which is capable of storing any amount of data in a decentralized manner, is one that many investors may have an eye for. BLZ is still new and in its beginning stages, but its experienced team and excellent advisors work in its favour and are indicative of a bright future for the BLZ token. Investing in the token may not give high returns in a short period (since the cryptocurrency is so new and difficult to predict). So some more research is advised.