Ripio Credit Network (RCN) is a global peer-to-peer credit network based on cosigned smart contracts that facilitates connections between lenders and borrowers across the world, on any currency. It enables people across the globe to access credit, and to provide loans. The RCN token is a typical ERC-20 token. This protocol has the smart contract technology embedded into the Ethereum blockchain which facilitates peer-to-peer lending without the hefty transaction fees that are charged in traditional banking processes. The RCN token functions at the core of the system. The inherent value of the token is directly correlated to the demand for its use in the network. Based in Argentina, Latin America, Ripio was launched at the TechCrunch Disrupt in May 2016. Sebastian Serrano, founder and CEO of the Ripio Credit Network is a technology enthusiast. He along with his team of technology experts, analysts and developers have designed an impressive concept along with the website, whitepaper and its implementation within the last 2 years. The team comprises of David Garcia (SVP & Board Member), Eugenio Cocimano (Data Scientist), Antonio Ceraso (CTO & Lead Blockchain developer) and Agustin Aguilar (Smart Contracts Developer) among many others. Ripio started off with a primary objective - to democratize the digital economy in Latin America, by offering digital payment alternatives within everyone's reach in a region where 65% remain unbanked. The smart contract is an integral part of the underlying technology of the Ripio Credit Network. It is generated by the Wallet Provider and executed when it is matched by the Credit Exchange. This smart contract contains information like the relevant credit terms, borrower obligations, events of default along with the signatures or verifications from all other agents. RCN tokens facilitate interaction with the smart contracts among different agents within the RCN. Every credit flow starts when the Borrower makes a credit request. The Borrower performs the request from its Wallet Provider, which has already integrated into the RCN protocol. Post this, the Borrower waits for an approval before any further action can be performed.
Nano, a low-latency cryptocurrency built on an innovative block-lattice data structure offering unlimited scalability and no transaction fees. Nano by design is a simple protocol with the sole purpose of being a high-performance cryptocurrency. The Nano protocol can run on low-power hardware, allowing it to be a practical, decentralized cryptocurrency for everyday use. The original Nano (RailBlocks) paper and first beta implementation were published in December, 2014, making it one of the first Directed Acyclic Graph (DAG) based cryptocurrencies [6]. Soon after, other DAG cryptocurrencies began to develop, most notably DagCoin/Byteball and IOTA. These DAG-based cryptocurrencies broke the blockchain mold, improving system performance and security. Byteball achieves consensus by relying on a “main-chain” comprised of honest, reputable and user-trusted “witnesses”, while IOTA achieves consensus via the cumulative PoW of stacked transactions. Nano achieves consensus via a balance-weighted vote on conflicting transactions. This consensus system provides quicker, more deterministic transactions while still maintaining a strong, decentralized system. Nano continues this development and has positioned itself as one of the highest performing cryptocurrencies. Nano is a trustless, feeless, low-latency cryptocurrency that utilizes a novel blocklattice structure and delegated Proof of Stake voting. The network requires minimal resources, no high-power mining hardware, and can process high transaction throughput. All of this is achieved by having individual blockchains for each account, eliminating access issues and inefficiencies of a global data-structure. We identified possible attack vectors on the system and presented arguments on how Nano is resistant to these forms of attacks. Check out CoinBureau for the complete review of Nano.