Besides the protocol smart contracts, Loopring also offers a collection of open-sourced software to help you build decentralized exchanges. Loopring does not require users to send tokens to any party for custody. Tokens always remain in users' blockchain addresses during the entire trading/transaction life cycle. Loopring orders do not lock users' assets, which means users can transfer tokens around even after orders have been submitted - Loopring will automatically adjust order amounts during settlement. Loopring protects users from threats such as exchange bankruptcies and hacking.Loopring provides higher liquidity and price improvement by matching orders in the form of order-rings. Each ring may consist of 2 to 16 orders, and tokens are transferred atomically in a circular manner during ring settlement. Loopring is designed to provide matching-as-a-service, and its orders are unidirectional and do not differentiate takers and makers. Loopring's order-rings generalize trading pairs and enable a built-in mechanism for performing arbitrage.Our patented "Dual Authoring" technology prevents orders and rings from being stolen by any middlemen or blockchain miners without binding orders to any dedicated relayers. The decoupling of orders from relayers makes orders genuinely sharable.