Loopring is a blockchain protocol designed to facilitate the creation of Decentralised exchanges (DEXs) through the use of a unique combination of off-chain order matching and on-chain settlement. Founded by Daniel Wang and his team, Loopring was first presented in 2017 and operates on a unique model that allows for the mixing and matching of orders, vastly enhancing liquidity and trading efficiency. Its protocol allows for multiple cross-chain and cross-exchange trades to be fulfilled simultaneously and securely, without requiring users to give up custody of their tokens to a centralised exchange. Notably, Loopring also incorporates a solution to prevent front-running, a common issue in other exchange models. This protocol is designed to be blockchain agnostic and has initially been deployed on platforms such as Ethereum and Qtum, with plans to expand to others like NEO.