Data transaction verification and data ownership tracing method and system based on block chain

Abstract

The invention discloses a block chain-based data transaction verification and data ownership tracing method and system, and the method comprises the steps: enabling a data user to upload data to an IPFS server through a block chain transaction platform, and returning a data address; generating a data label by using a file anti-counterfeiting mechanism, and generating a data commitment by using a random oracle machine; uploading the data label of the current data when an arbitration request is initiated for the authenticity of the data; a random oracle machine is used for inquiring to obtain a data label released by the data user, a data label stored in the IPFS server is obtained according to the data address, consistency comparison is carried out on the data label uploaded by the data buyer and the data label released by the data user, and whether data counterfeiting exists in the data user and the data buyer or not is judged. Through the technical scheme of the invention, data transaction verification and data ownership traceability can be completed, and the problems of data falsification and data ownership loss of two data transaction parties are solved.

Description

Technical field [0001] The present invention relates to the field of blockchain technology, in particular to a blockchain-based data transaction verification method, a blockchain-based data ownership traceability method and a blockchain-based data transaction authenticity and data ownership traceability system. Background [0002] In the current community study, data sharing transactions have gradually shifted from a transaction system with traditional third-party participation to a transaction system with blockchain as the core. Using the decentralized, tamperable, open and transparent characteristics of the blockchain, data sharing transactions can achieve the authenticity and privacy of data transactions, and use IPFS technology to realize distributed storage of data, hidden storage of off-chain data, and anonymous transactions of on-chain data. However, without the participation of a third-party intermediary, the authenticity of the data transaction content cannot be guarante...

AI Technical Summary

Problems solved by technology

[0006] Specifically, the issue of data ownership is as follows: in the general model of existing trading platforms and the current research status, data owners often cannot control the access and use of data, and the completion of a transaction often represents the transfer of data ownership. , that is, the uniqueness of data ownership cannot be controlled

Once the data is traded, there are two ownership entities of the data Data in the data platform, that is, the Seller and the Buyer. Then if the Buyer uploads the data again, it means that the ownership entity of the Data at this time is no longer the Seller , but Buyer, which will cause data source confusion, cannot provide a reliable transaction environment for Seller, and cannot guarantee Seller’s income, that is, the loss of ownership after data transaction

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