According to its whitepaper, Aeron aims to be the new standard of aviation safety powered by the blockchain. Maintained by a group of aviation professionals, Aeron wants to reduce air transport-related accidents, which it says currently numbers around 3302 per year. One of the major causes of such accidents is the lack of real experience among pilots, since unsecured flight log data from them is susceptible to fraud and forgery. Also, due to 'pay to fly' experiences, corrupt flight schools, negligence of aircraft operators, the primary data driving any decision is affected. Aeron is built upon a robust and cryptographically secure database that makes it unique compared to other online travel companies, travel search services or internal applications made for flight officials. With this technology, falsification of data can be kept at a minimum. Additionally, as you would expect from a blockchain-backed application, key information is safely stored and is accessible to everyone with 100% transparency. Except that it now comes secured by a multi-sig authentication system that prevents any type of security breach. According to Aeron's Whitepaper, 'The pilot’s application is used by a pilot for personal flight logging. The company application collects and verifies data from aircraft operators, maintenance organizations, flight schools and fixed base operators'. Aeron (ARN) is an ERC20 compliant Ethereum based token, with a fixed supply of 20,000,000 ARN. When the token was launched, a fixed amount of tokens were created and after which no more tokens are to be minted. About 60% of the supply is estimated to be in circulation. The supply should decrease over time when ARN tokens as taken out of circulation. Once Aeron receives ARN tokens in exchange of services, the coins will be again released in to the network. According to its whitepaper, Aeron plans to have a user base of 300000 by the end of 2020. This would encourage it to embed new features on its platform. With the help of multi-app functionality and block technology, the company envisions to have an “airline in the pocket” of sorts within two years. While its price has fluctuated like most other cryptocurrencies, it delivered more than 15x returns within a short period between November 2017 to January 2018. As of July 2018, the price is nearly back to its November levels, at $0.57.
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.