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.
Friendz is a digital marketing company whose main goal is to connect brands with their target audience, taking advantage of the most powerful marketing tool ever: “word of mouth”. When we look at what the future holds for us we see global expansion, larger communities of users, more services provided and happier clients. All this made possible by the use of the blockchain technology and the adoption of Friendz Coins, the new standard currency for buying digital services and activate community of engaged users all around the world. Friendz has been actively present in the market since 2016. As of year 2018, we have offered services to more than 200 brands. Our team is composed of 35 people, with different backgrounds and skills, operating in our offices in Switzerland, Italy and Spain. Friendz app boasts over 200,000 organic users who have published well over 3,000,000 pictures in the last two years. In 2016 Friendz received €500,000 worth of financing from Triboo Group, a public company and important player in the digital marketing industry, enabling it to hit the market and create its network. At the end of 2017 revenues amounted to € 1,200,000. Roadmap 1. We plan to use blockchain technology to provide an even safer and reliable experience to our clients. Through the use of a decentralized blockchain technology that the safe transfer of funds and the completion of services will be certified. Friendz platform will become even safer and more advanced technologically thereby protecting the interest of our community and clients worldwide. 2. We plan to decentralize the digital advertising business, creating a traceable single tool that can be adopted globally to activate users and involve them in the creation of advertising campaigns. We are planning to introduce a transparent system that will track the flow of marketing spending on Friendz platform, in a totally revolutional way to digital advertising. The use of Friendz Coins will in fact provide brands with the opportunity to spread their advertising messages and to reach the friends of Friendz users in a genuine and creative way. Users will be rewarded for being active and will use the reward to purchase other services from Friendz. 3. In the long term we want to provide every online activity-as-a-service, in and beyond the world of digital marketing. The idea is to develop a platform where companies can activate large communities of users to perform various activities that will enhance their brands. Our plan is to maintain a focus on digital advertising but with an open eye on new markets and opportunities. Friendz platform will be available to any company that requires services such as validation systems, quick content generation, bug testing, market research and app review. Our clients will not only be B2C companies, but also B2B, and those coming from the blockchain industry, all with the common goal of reaching the final users. The automation of all activities will ensure that Friendz’s role becomes that of merely guaranteeing community participation and engagement in the activities proposed.