Loopring is a Layer-2, open protocol for scalable, order book-based exchanges on Ethereum. Loopring was one of the earliest decentralized exchanges to adopt the zkRollup solution. Loopring currently provides four trading pairs: LRC/ETH, ETH/DAI, ETH/USDT and USDT/Dai. The issuance of LRC tokens is governed by Loopring’s smart contracts, and nodes on the Loopring network that validate transactions are rewarded LRC tokens.