Maker is a contract-based platform that keeps the Dai value stabilized, using a fast-paced system of Collateralized Debt Positions or CDPs in short.Maker lets every user lend their Ethereum assets to create Dai on the Maker platform. Once obtained, Dai can be used just like any other cryptocurrency - as a way of payment for different products and services, send to other users or even kept safe for future long-term savings. The generation of Dai also gathers the parts needed for a fully decentralized trading platform.A user with assets can lend them to gather Dai on the Maker platform through smart contracts (CDPs). The Collateralized Debt Positions holds a big part of the assets given by a user and permit the specific user to generate Dai, but also accumulate debt. The debt locks out the deposited assets inside the CDPs completely, until later when the debt is covered by paying with the appropriate amount of Dai. At this point, the user can finally withdraw the collateral.