PurposeThis study aims to propose a cloud platform architecture considering information sharing based on blockchain to realize the security and convenience of enterprise information sharing in the automotive supply chain.Design/methodology/approachA bilateral matching model considering enterprises information contribution stimulates information sharing and improves the efficiency and quality of supply and demand matching. Three smart contracts are used to complete the information sharing process and match supply and demand in the automotive supply chain.FindingsThe system is tested on the local Ganache private chain, and the decentralized web page is designed based on the architecture prototype.Originality/valueSolve the problem of information island in automobile supply chain.