Food label unique code publishing and circulation tracing method based on blockchain main and auxiliary chain technology

Abstract

The invention discloses a food label unique code publishing and circulation tracing method based on a blockchain main and auxiliary chain technology. The method comprises the steps: employing the commodity label unique code information blockchain technology based on public and private key pairing verification; enabling a front-stage production enterprise and a rear-stage production enterprise or asales enterprise for producing a certain piece of food in a circulation chain to link unique code information blocks of food labels into a secondary chain through a private key and public key pairedverification method, and adding the auxiliary chain and the timestamp into the main chain as block information, so the counterfeiting prevention, tampering prevention and replay prevention of the mainchain and the auxiliary chain information are realized, and network propagation of the unique code of the food label and independent chaining and rapid tracing of single food information can be realized, wherein users comprise a third-party mechanism, manufacturers at all levels, dealers and consumers which are connected with the Internet respectively; the server databases of the third-party mechanism, manufacturers and dealers at all levels are used for storing food label information blockchain account books, receiving new legal verification data issued by other parties in real time, updating local account books in time, hooking new data blocks according to food transfer conditions, and issuing new blockchain data; and enabling a consumer to obtain the latest timestamp blockchain from aplurality of enterprise servers during code scanning, and performing calculation to obtain the food traceability information chain by comparing the latest timestamp blockchain.

Description

technical field

[0001] The invention belongs to the technical field of commodity circulation anti-counterfeiting and traceability, and in particular relates to a food label unique code release and circulation traceability method based on blockchain primary and secondary chain technology. Background technique

[0002] Food safety issues are related to the health and life safety of the general public, and counterfeit and shoddy products seriously damage the brand reputation and economic interests of genuine merchants. With the increasingly developed product circulation and the increasingly refined division of labor, it is becoming more and more difficult to trace forward the distribution chain, and it is becoming more and more difficult to identify and curb illegal activities such as counterfeiting and cross-regional sales. Traditional anti-counterfeiting and traceability technologies include anti-counterfeiting marks such as QR codes, barcodes, regulatory codes, and certifica...

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