Blockchain + D-S Evidence Theory Approach to Traceability of Agricultural Products

Abstract

The establishment of an agricultural product traceability system is of great significance to the supervision of agricultural product quality and safety. In response to the problems of complicated operation and low efficiency of existing agricultural product traceability methods, the agricultural product traceability method of blockchain + Dempster-Shafer(D-S) evidence theory is proposed. Through testing and analysis of accuracy and efficiency, the results show that accurate traceability can be achieved through the efforts of all parties in the market environment and the role of the network; in terms of performance, the write throughput of the Blockchain + D-S evidence theory approach and using a clustered traceability approach are almost identical; the highest query throughputs of the two approaches are 251bit/s and 164bit/s, respectively. The query throughput of the Blockchain + D-S evidence theory approach is higher, whereas the time delay of the data query of the Blockchain + D-S evidence theory approach is 368ms, which is much lower than that of the query of using a clustered traceability approach(1375.6ms). The research results have certain significance for the expansion of the blockchain traceability network and the collaborative development of agricultural product traceability.