The following characteristics of blockchain technology make it useful for both democratic and authoritarian countries, planned and market economies, regardless of ideology. It is a distributed ledger technology that can record and store data, ensuring data integrity and immutability. Characteristics of blockchain technology: First, decentralization, which means that there is no central node controlling the entire network; all nodes in the decentralized network are equal. Second, immutability: once data is written to the blockchain, it cannot be altered or deleted. Third, traceability: all operations leave a trace throughout the process, which can be audited and reviewed. Fourth, smart contracts: automatic execution of predefined rules. In the context of data sharing and interconnectivity, these characteristics of blockchain provide a technological foundation for establishing mutual trust among multiple parties, enabling the construction of a transparent data directory system, recording the entire process of data usage, and achieving automated governance of data sharing. The world's first data recorded and stored using this technology is Bitcoin, the first application scenario of blockchain technology, which naturally belongs to the financial and asset fields, followed by social governance. In social governance, the protection of privacy in democratic voting, elections, and decision-making, as well as the achievement of consensus, are also natural scenarios.