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.
Zebi is a young and innovative organization founded, mentored and managed by Oxford, MIT, Stanford, and IIT veterans and thought leaders from Silicon Valley with experience in Google, Uber, Amazon, Microsoft, and Oracle. Zebi specializes in providing Blockchain based offerings to governments and enterprises to leverage and protect their high value and sensitive data. India’s big data generation is increasing exponentially and is expected to reach 3 Zebibytes per year (Zebibyte = 1024^7 bytes) by 2020, driven by continued growth of internet usage, social networks, proliferation of smartphones, as well as the digital initiatives and structural reforms undertaken by the government. At the same time, incidents of data crimes such as data hacks, data leaks, data tampering, identity thefts are on the rise, which are costing Indian organizations and consumers more than $30 billion annually. Zebi specializes in providing blockchain based solutions to governments and enterprises to leverage and protect their high value and sensitive data. Zebi is one of the few enterprise grade product companies based in India offering best of the expertise of Silicon Valley at Indian prices Recognizing the need and opportunity to enable with technology the enforcement of data protection regulations, Zebi has created a Blockchain driven, unique and holistic solution to make high value and sensitive data readily available for legitimate use. Zebi safeguards data against hacking and tampering, while obtaining consent from individuals. The solution comprises of Zebi Chain™ to provide immutability to critical records, coupled with a central hub called Zebi Data Gateway which enables secure and instant data exchange through Data-as-a-Service (DaaS) APIs. Zebi’s innovative, proprietary solution set is one of the first in industry and is patent pending.