Exchange: https://dex.top
DEx.top achieves instant trading experience with its two-ledger architecture: an off-chain ledger responsible for providing instant trading experience and a smart-contract based on-chain ledger to ensure the traders' assets are safe.
The two ledgers are closely synchronized, where all trading activities are first registered on the off-chain ledger and later get exactly replayed (executed in the same way and the same order) and confirmed on the on-chain ledger. The on-chain ledger can be interpreted as a delayed version of the off-chain ledger, which will eventually catch up.
See the White Paper for details.
It is deployed at 0x7600977 on Ethereum. See the Contract Spec, the source code of dextop.sol, and the Gas Cost Chart for details.
Here is an article introducing the gas cost saving methods used in DEx.top [link].
DEx.top is under the Apache 2.0 license. See the LICENSE file for details.