GST is a safe, transparent and professional de-centralized business application platform. As a public payment chain with public trust and technical trust. Supported by block chain technology, using the advantages of block chain distributed storage, openness, fairness, transparency, data traceability and non-tampering, it can greatly reduce transaction costs and improve circulation efficiency. Making full use of the technology of block chain distributed data storage, point-to-point transmission and consensus mechanism, encrypting and sharing transaction information, completing the integration of application system and block chain platform in the industry, realizing seamless connection between new technology and traditional industry and existing application system, thus breaking through the technical bottleneck of traditional payment platform. Block chain intelligent contract realizes its unique payment business logic.