Released to the public in 2014, Reddcoin is a decentralized social cryptocurrency that allows anyone to instantly send & receive RDD (its native cryptocurrency) payments on social networks with no transaction fees. It’s essentially the blockchain version of Venmo, Facebook Money, or Snapchat's Snapcash, all of which allow you to easily transfer money to friends and family via their respective social media platforms. However, unlike these major social media networks that require you to use their native platform to send and receive money, Reddcoin allows you to seamlessly integrate its payment features on multiple platforms like Reddit, Facebook, Twitter, and more. Reddcoin is a social cryptocurrency that can be integrated with many different social media platforms for sending/receiving money with zero fees. It’s a peer-to-peer open-source cryptocurrency forked from Litecoin. It dedicates much of its efforts to facilitate the “tipping” of small amounts of RDD on social networks, done in a similar fashion to “liking” a post on FB. The PoSV algorithm is a new take on PoS which encourages both ownership (stake) and activity (velocity). Its tipping system has already been enabled on Twitter, Reddit, Twitch, and Justin.TV. Reddcoin was created on January 20, 2014, as a PoW cryptocurrency. On February 2, 2014, after raising $100,000 through their Initial Public Coin Offering (IPCO), Reddcoin was released to the public. On April 29, 2014, they announced that Reddcoin would transition from PoW to PoSV. In 2017, Reddcoin made an official announcement listing their team members, including developers John Nash and Leonard Simonse. In subsequent Tweets, they’ve publicly announced the additions of developers such as Bradley Ploof and James Tweeg. They’ve been active in updating the community via Twitter, but if you’d like to keep informed directly on the teams project progress, check out their GitHub or Trello (which includes the project roadmap).
The Cosmos network consists of many independent, parallel blockchains, called zones, each powered by classical Byzantine fault-tolerant (BFT) consensus protocols like Tendermint (already used by platforms like ErisDB). Some zones act as hubs with respect to other zones, allowing many zones to interoperate through a shared hub. The architecture is a more general application of the Bitcoin sidechains concept, using classic BFT and Proof-of-Stake algorithms, instead of Proof-of-Work.Cosmos can interoperate with multiple other applications and cryptocurrencies, something other blockchains can’t do well. By creating a new zone, you can plug any blockchain system into the Cosmos hub and pass tokens back and forth between those zones, without the need for an intermediary. While the Cosmos Hub is a multi-asset distributed ledger, there is a special native token called the atom. Atoms have three use cases: as a spam-prevention mechanism, as staking tokens, and as a voting mechanism in governance. As a spam prevention mechanism, Atoms are used to pay fees. The fee may be proportional to the amount of computation required by the transaction, similar to Ethereum’s concept of “gas”. Fee distribution is done in-protocol and a protocol specification is described here. As staking tokens, Atoms can be “bonded” in order to earn block rewards. The economic security of the Cosmos Hub is a function of the amount of Atoms staked. The more Atoms that are collateralized, the more “skin” there is at stake and the higher the cost of attacking the network. Thus, the more Atoms there are bonded, the greater the economic security of the network. Atom holders may govern the Cosmos Hub by voting on proposals with their staked Atoms.