Food label unique code publishing and circulation traceability method based on block chain main and auxiliary chain technology
A food label and blockchain technology, applied in the field of traceability and anti-counterfeiting of commodity circulation, can solve the problems of traceability of commodity circulation in difficult handheld devices, and achieve the effect of reducing the burden on hardware and reducing the amount of calculation.
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[0038] Example 1:
[0039] Such as figure 1 As shown, a food label unique code release and circulation traceability method based on blockchain main and subsidiary chain technology, users include third-party organizations, manufacturers at all levels, distributors, and consumers, respectively, connect to the Internet; third-party organizations, The food label information blockchain ledger is stored in the server databases of manufacturers and distributors at all levels, and real-time new verified legal data issued by other parties are received and the local ledger is updated in time, and new data blocks are connected according to the food transfer situation. Publish new blockchain data; when consumers scan codes, they obtain and compare the latest blockchain with timestamps from multiple enterprise servers, and calculate the food traceability information chain.
[0040] Such as figure 2 As shown, the main chain is formed by the concatenation of block hash values. A certain node bl...
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