关键词: 区块链, 汽车供应链, 溯源, 智能合约

Abstract:

Blockchain has the characteristics of openness, transparency, non-tampering and easy traceability as an emerging distributed database technology. It has a good fit with the traceability of supply chain products. Aiming at the problems of automobile supply chain, such as lack of trust, difficulty of traceability and low efficiency of information sharing, a product traceability system of automobile supply chain is designed based on block chain technology. Ethereum is selected as the development platform of the system, and functional modules such as authorization management, information input, traceability transfer and chain query are designed. Smart contracts are designed according to functional requirements, and processing links of sensitive data are added. The system is equipped with four participants, namely, raw material suppliers, parts suppliers, OEMs and distributors. The system provides the traceability interface between regulatory authorities and consumers. Finally, an example is given to demonstrate the traceability system. The research shows that the blockchain traceability system has obvious advantages over the traditional traceability method in terms of product data security and traceability efficiency.

Key words: block chain, automotive supply chain, traceability, smart contract