The current agricultural products supply chain traceability system has problems such as low data storage capacity, centralized management, poor scalability, and the inability to guarantee the privacy information of participants. This paper used the Hyperledger Fabric v2.0 platform to design an agricultural products supply chain traceability system based on master-slave federated chain structure to solve the above problems. This system used the constructed master-slave federated chain model to store information of the supply chain, and used the multi-channel design scheme of the federated chain to ensure the security of the private information of each participating subject in the supply chain. This system deployed IoT devices in each supply chain participant to collect, process and upload information to ensure that the information stored in the supply chain wasn't tampered with, safe and reliable. At the same time, this paper designed a smart contract between the master chain and the slave chain to determine the rationality of the information uploaded by each participant following the "National Food Safety Standard" to ensure the quality of the food at the source. In addition, it designed a clustered transmission method to upload the large amount of data generated by IoT devices in the farm with low energy consumption. The experimental results show that the system builds the agricultural products supply chain with low latency and returns the information for consumer queries in a shorter time. Meanwhile, the clustered transmission method can significantly reduce the energy consumption generated by uploading data from IoT devices. The designed agricultural products supply chain traceability system realizes the openness and transparency of the agricultural products supply chain, improves the efficiency of supply chain information traceability, and increases consumers' food safety trust.

[2022-01-25] Accepted Paper /doc/2021.11.0624/v1

[2022-06-05] Printed Article /doc/2021.11.0624/v2