DAEX is a clearing solution for centralized cryptocurrency trading exchanges. Its clearing service is based on distributed ledger technology. Clearing and settlement rules are preprogrammed into clearing smart contracts on the DAEX clearing chain. The clearing process is automatic without people’s interference. The objectivity of clearing is guaranteed by the consensus mechanism on the clearing chain. Also, customers’ digital assets are registered and stored on the DAEX’s clearing chain. No other institutions or individuals can access these assets without the owner’s permission.
The key to Space Chain is to deploy all blockchain nodes on satellites so as to bring blockchain technology into space, adding a new dimension to blockchain’s core concept of distributed ledger by making use of space technology and advantages of space resources. As a space blockchain platform featuring data collecting, computing, application and storage, Space Chain uses satellites as its blockchain nodes for realizing direct on-satellite data processing and secure in-space data storage through cryptographic technologies such as quantum communications. Different from ground-network-based blockchain technology, Space chain provides a broader coverage and is based on a network of LEO satellites for achieving broad-based connectivity so that anyone and anything could become the user of blockchain technology anywhere and anytime.