基于区块链和HACCP的水产品溯源系统

Aquatic product traceability system based on blockchain and HACCP

针对传统的水产品溯源中心化严重、数据易被篡改等问题,运用区块链技术,基于危害分析与关键控制点(HACCP)设计水产品溯源体系.采用多元线性回归的方法对样品数据指标进行处理,确认了养殖过程中的关键控制点;在确定关键信息的基础上,设计了智能合约对水产品溯源各环节的上传数据进行判定.从系统可行性出发,分别对系统功能、共识拓扑、溯源编码进行详细设计.搭建水产品溯源系统,并对系统的功能和性能进行了测试.结果表明:系统的交易吞吐量固定在320笔/s上下,平均交易延迟在0.5 s左右,交易成功率在99.8%左右,完全可以满足生产实践的需求.

To solve the problems of severe centralization and vulnerability to data tampering in traditional seafood traceability systems,the blockchain technology was employed to design the seafood traceability system based on hazard analysis and critical control points(HACCP).The multiple linear regression was used to process the sample data indicators and confirm the critical control points in the farming process.Based on the determination of key information,the smart contracts were designed to verify the uploaded data at each stage of seafood traceability.From the perspective of system feasibility,the detailed designs were conducted for system functionality,consensus topology and traceability coding.The seafood traceability system was developed and subjected to function and performance testing.The results show that the system transaction throughput is consistently around 320 transactions per second.The average transaction latency is approximate 0.5 s,and the transaction success rate is about 99.8%.The performance is fully capable of meeting the needs of production practices.