Research on data storage model of household electrical appliances supply chain traceability system based on blockchain

In order to solve the problems of large amount of data storage and low query efficiency in home appliance supply chain traceability system, this paper studies a hyperledger fabric based dual storage block chain model of data on-chain and off-chain. When the total number of traceable data reaches 100000, the model is compared with the traditional model, and the results show that the query efficiency of the model is improved by at least 42.36%, which solves the problem of low efficiency of traditional data query, and can ensure the traceability reliability of supply chain data information of home appliance manufacturers.