Research on Industrial Internet Traceability Technology Based on Blockchain

In recent years, the demand of Industrial Internet for traceability has changed from simply viewing product information to ensuring the safety, reliability and efficiency of product traceability. The current traceability method only takes the blockchain as a data storage tool and mainly relies on the method of accessing all blocks compared with cases to realize information traceability. It is not applicable to the scene of frequent query of product flow information. Combined with the characteristics of Industrial Internet, this paper proposes a mesh blockchain structure combined with product traceability system to ensure data security, improve data query speed as much as possible and reduce the storage of redundant data. On this basis, the state index tree is used to maintain the latest status of the product and reduce the time cost of updating the product status. When traceability is needed, it can be indexed quickly, which greatly improves the traceability efficiency.