DLB is committed to breaking the big data monopoly and building a decentralized big data open community based on blockchain technology. The use of blockchain underlying technology, distributed, decentralized data nodes makes data difficult to tamper with, and can be safely used according to the scope of authorization to prevent illegal access. All data sources of DLB are guaranteed to be owned by individuals. When the data associated with an individual is authorized for use, the value it generates will be fed back to the data owner and the relevant contributors in the data generation process. The goal of Data Link Base is to provide a comprehensive solution to meet the fair and transparent relationship between supply and demand in the data industry while ensuring data security and credibility.