Design of Fruit and Vegetable Produce Traceability System Based on Dual Chain and Dual Storage Blockchain

The "double chain and double storage" blockchain model for the fruit and vegetable supply chain was developed to address the ongoing issues with the agricultural quality control system. The "main chain + privacy chain" double chain model is used to limit storage growth, and the "database + block chain" method of storing on-chain and off-chain traceability data is intended to increase the blockchain's query efficiency. Based on Hyperledger Fabric. Designed a fruit and vegetable produce traceability system based on Hyperledger Fabric. The system was constructed using smart contract technology to filter and restrict the data upload. The experimental comparison analysis of the model is also conducted. The findings demonstrate that the dual-chain dual-storage model based on Hyperledger, which takes into account the openness, security, and information privacy of each link enterprise of the transaction information, can significantly increase the blockchain storage query efficiency.