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.
Dai is a stablecoin. It is an Ethereum ERC20 token that is pegged to $1 USD — every Dai is worth $1, and will always be worth $1, regardless of how much Dai is in existence. There is no centralized authority like Tether that backs its value, and no traditional bank that backs each Dai with a real US dollar. There is nothing that can be shut down, and no centralized authority that needs to be trusted. Dai lives entirely within the Ethereum blockchain using smart contracts. *Features of Dai: 1. Dai is always worth $1 USD each 2. It can be freely traded like any other ERC20 token 3. Anyone with an Ethereum wallet can own, accept, and transfer it 4. It can be exchanged without any middleman 5. No individual person or company has control over it 6. No government or authority can shut it down *How Dai Works? Dai is a masterpiece of game theory that carefully balances economic incentives in the pursuit of one goal — a token that is continuously approaching the value of $1 USD. When Dai is worth above $1, mechanisms work to decrease the price. When Dai is worth below $1, mechanisms work to increase the price. The rational actors that take part in these mechanisms do so because they earn money anytime Dai is not perfectly worth $1. This is why Dai is always floating slightly above or below $1 — it is an endless wave function bouncing infinitely close to $1, but never quite achieving it. The farther Dai goes from $1, the more incentive there is to fix it. This is the magic of Dai. *How is Dai Created? Dai is simply a loan against Ethereum. By using the MakerDAO dApp, advanced users can take loans out in Dai against their ETH holdings. First, ETH is turned into “wrapped ETH” (WETH), which is simply an ERC20 wrapping around ETH. This “tokenizes” ETH so it can be used like any other ERC20 token. Next, WETH is turned into “pooled ETH” (PETH), which means it joins a large pool of Ethereum that is the collateral for all Dai created. Once you have PETH, you can create a “collateralized debt position” (CDP), which locks up your PETH and allows you to draw Dai against your collateral, which is PETH. As you draw out Dai, the ratio of debt in the CDP increases. There is a debt limit that sets a maximum amount of Dai you can draw against your CDP. Once you have Dai, you can spend or trade it freely like any other ERC20 token. *There are several important reasons why you would create Dai, despite the hassle: 1. You need a loan, and have an asset (ETH) to use as collateral for your loan 2. You believe ETH is going up in value. You can use your CDP to buy ETH on margin — you lock up your ETH in a CDP, draw Dai against it, use the Dai to buy more ETH on an exchange, and then use that ETH to further increase the size of your CDP. This can be accomplished without any third-party or centralized authority allowing you to do so — margin trading can be accomplished entirely on the blockchain. 3. The demand for Dai has driven the price above $1 USD. When this occurs, you can create Dai then immediately sell it on an exchange for greater than $1 USD. This is essentially free money, and is one of the mechanisms the Maker system uses to keep Dai pegged to $1 USD. Dai being worth over $1 USD encourages more Dai to be created. These three reasons are enough to ensure that Dai is continually created.