Traceability of Product Supply Chain Based on Hyperledger Fabric

Abstract: At present, more and more consumers and manufacturers are aware of the importance of product traceability, so it is very important to strengthen the traceability in the supply chain. The existing centralized database system has isolated data storage, and many parties involved in data query lack mutual trust. Based on the distributed ledger of the blockchain, this paper attempts to solve this problem by transforming the traceability information of physical goods into the digital of the blockchain, so as to realize the collaborative traceability of entities in the supply chain. At present, the relationship between components and products in manufacturing process cannot be captured, which limits the ability to track the source of products. This paper proposes a supply chain traceability model based on blockchain, which uses smart contracts to complete multi-party agreements on the chain. In the contract, the products produced by the manufacturer are transferred in the specified alliance chain entity, and in each transfer process, the products will be marked with new traceability information in the form of digital authentication. This mechanism retains the possibility of products being traced. The model is tested under the framework of hyperledger fabric. By building a blockchain network, the entity objects participating in the supply chain can be authenticated to ensure the closed-loop circulation of goods. It also indirectly proves the feasibility of commodity traceability application based on blockchain technology.