| In recent years,counterfeit and inferior products have been frequently exposed.How to verify the authenticity of products has become an important issue that urgently needs to be solved in the e-commerce supply chain.The product traceability technology can comprehensively display product information,which is one of the important means to verify the authenticity of products.Common product traceability systems are prone to a single point of failure,and the security of private information is low.The blockchain technology has the characteristics of decentralization and anti-tampering,making it suitable for product traceability scenarios.However,if blockchain technology is directly combined with existing traceability systems,although it can to some extent solve the problems of existing traceability systems,the shortcomings of blockchain itself and the single traceability authentication method will restrict the effectiveness of the combination of the two.Therefore,in response to the above issues,the concept of a traceability structure is proposed,and a traceability certification strategy that integrates consumer opinions and platform data is developed in the traceability structure to solve the problems of single product certification methods and low consumer trust in certification results.Moreover,on the basis of the traceability structure,a product traceability certification scheme based on blockchain is proposed,that is,a product traceability certification scheme that integrates blockchain and traceability structure,so as to increase the adaptability of blockchain technology and product traceability certification scenarios.The solution formulates the product traceability certification strategy in the traceability structure,formalizes the traceability structure in the smart contract,and by calling the product certification operation in the traceability structure,the product traceability certification process is implemented to ensure the safety of the certification process.At the same time,this scheme adopts a combination of on-chain and off-chain methods to store consumer comments and encrypted traceability information,that is,first store the information in the Inter Planetary File System(IPFS),and then upload the hash to the blockchain,to ease the data storage pressure on the chain,and ensure the privacy and security of data.Based on the proposed product traceability certification scheme that integrates blockchain and traceability structure,the Ethereum platform is selected for system implementation.The functional verification of the system indicates that the designed system can achieve a safe and reliable traceability certification process for products,with less pressure on data storage on the chain and higher consumer participation,which can meet the needs of product traceability certification in ecommerce supply chain scenarios. |
