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.
Reinventing the retail business and customer relationship. Netkoin (NTK) is an ERC20 token based on the Ethereum blockchain. The NTK token will be used to power Netkoin’s universal rewards system on Netkoin’s location based mobile application and business management platform. Netkoin’s location based mobile advertising application aims to make retail shopping relevant and rewarding for customers based on their location. The mobile application will contain numerous features and filters in order to provide the customer with a personalized retail shopping experience, while maintaining the highest level of user’s data security and privacy. Netkoin’s business management platform will be utilized by retail stores to enable business owners to manage their stores advertising on the Netkoin mobile application. Businesses can integrate their store’s social media content, providing them with a single place of advertising their businesses content with shoppers. Therefore reducing content marketing management by the retail business marketing team.