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