DSA is a decentralized blockchain system based on the combination of conditional capacity proof and distributed data storage. DSA adopts a flexible insertion method, supports the main side chain structure/federal structure, and can easily support large data volume and high concurrency business scenarios under the premise of ensuring the safe and stable operation of the main chain, and can use DSA with a flexible consensus mechanism ( Such as POW, POS, etc.) run on the side chain. At the same time, DSA is also compatible with the entry and cross-chain interaction of other mainstream blockchain architectures such as ETH and EOS.