According to the 'National Data Infrastructure Construction Guidelines' released by the National Development and Reform Commission, the Data Bureau, and the Ministry of Industry and Information Technology, the document clearly proposes the use of blockchain technology, encryption technology, and smart contracts to construct a trustworthy data circulation system. The guidelines encourage industries and localities to explore blockchain networks and privacy-preserving computing platforms to enhance trust and security in the data circulation process, promote the construction of a nationwide integrated distributed data catalog and digital identity system, and simultaneously strengthen the traceability and trustworthiness of data asset certificates. The planning goal is to achieve a scalable trustworthy data circulation pattern covering large and medium-sized cities in the coming years.