To solve the problem of large amount of data and complex data relationships in Industrial Internet,a data traceability method based on blockchain and PROV-DM model is proposed.This method uses the PROV-DM model to record traceability infor-mation,which can describe multiple data relationships in Industrial Internet;The storage structure is blockchain blockchain,which can reduce the amount of data computation in the traceability query process and improve the efficiency of traceability queries;Each blockchain is equipped with a smart contract that effectively ensures encryption and decryption rates.Through experiments,the data traceability method can complete multiple functions such as data traceability record and traceability query,encrypt and decrypt tracea-bility information with large amount of data at a high speed,have high traceability query efficiency and large throughput,and basically meet the data traceability requirements of Industrial Internet.Therefore,the data traceability method based on blockchain and PROV-DM model has certain value in the practical application of Industrial Internet.
维普
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