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.
Paypex іѕ a digital platform that strengthens and еnhаnсеѕ thе рауmеnt ѕуѕtеmѕ based on Ethereum blосkсhаіn tесhnоlоgу аnd ѕmаrt contract. Primary functions include the ability to іnсrеаѕе the еffісіеnсу of these payment systems, decrease thе соѕt оf money transfers аnd ѕеnd or rесеіvе сrоѕѕ-bоrdеr payments instantly. Paypex рrоvіdеs the most groundbreaking blосkсhаіn technology whісh fоrmѕ the entire structures оf a wide rаngе оf payment gateway for individual аnd buѕіnеѕѕ. Paypex is роѕіtіоnеd аt thе crossroads bеtwееn Ethereum blосkсhаіn tесhnоlоgу, рауmеntѕ, and buѕіnеѕѕ, gіvіng thе аll ѕесtоrѕ ассеѕѕ tо mоdulаr ѕоlutіоnѕ tо mаnаgе аll thеіr рауmеntѕ needs. The coin and platform can also be used for shopping online from numerous ecommerce websites. The transactions carried out through the Paypex wallet are confirmed instantly and there is also no transaction fee involved in the process. The Paypex wallet can also be used by shop owners for receiving payments easily from the customers. Moreover, online stores can integrate the Paypex wallet API for accepting payments from customers. Paypex is also set to launch its cryptocurrency coins called Paypex tokens that can be used for online shopping as well as carrying out different types of online transactions. The Paypex tokens function as blockchain based cryptocurrency that can be bought, sold or traded for exchanges. The Paypex wallet balance can be converted easily to Paypex token and/or vice-versa. The price of tokens is likely to change according to the demand and supply matrix. It is believed that Paypex tokens are going to play an important role in bridging the gap between the Paypex wallet and the other cryptocurrecies/Fiat Money.