Research On Digital Resources Copyright Trading And Privacy Protection Based On Blockchain

With the vigorous development of digitization in the cultural industry,the dissemination of digital resources on the network is increasing.While copyright trading of digital resources brings benefits to copyright owners,it also exposes new problems due to the characteristics of rapid and wide network dissemination.The theft and illegal use of a large number of digital resources have not only hindered the development of the digital rights industry,but also caused conflicts in copyright disputes.Most traditional digital resource rights management platforms use centralized management,and digital resources are stored in databases.Once a database is maliciously attacked,or the platform administrator is driven by interests to sell the personal information of the owner of digital resources,it is bound to cause the risk of personal privacy disclosure.In addition,traditional copyright transactions face unavoidable problems such as high cost,timeconsuming,and cumbersome steps.In response to the above various issues,this article mainly conducts the following research work:(1)In the copyright trading scenario of digital resources,a blockchain based copyright trading model for digital resources is designed.Aiming at the single point of failure and network load problems in centralized storage,FISCO BCOS alliance chain is adopted for development,and the entire resource registration process is stored on the chain to achieve the purpose of copyright protection.(2)Considering the uniqueness of copyright ownership,this paper proposes to bind non homogeneous tokens(NFTs)to registered digital resources and apply them to a blockchain based digital resource copyright trading model.Realize the casting,transfer,and authorization of NFT by writing smart contracts.(3)To address the issue of user privacy disclosure,this article applies the We Identity selective disclosure scheme to the copyright registration field of digital resources for the first time.Considering the validity verification of copyright registration,this paper designs a digital resource copyright registration certificate and formulates a detailed set of information disclosure rules for it.Through a message digest algorithm,hidden attributes are encrypted and then spliced with public fields.Simulation experiments show that this scheme has good security and can effectively protect the privacy information of users and digital resources.(4)This article proposes a PHRP(Paillier homomorphic encryption and Range Proof)algorithm to address privacy issues in transactions.In the implementation of privacy transactions,encryption and verification rules were constructed,and the algorithm was tested.The test results show that the PHRP algorithm proposed in this article performs better in terms of operational efficiency compared to the Paillier algorithm,which currently has the best privacy protection effect.Therefore,the application of PHRP algorithm can better meet the privacy protection needs in copyright trading scenarios.In summary,this article designs a blockchain based digital resource copyright trading model and proposes a privacy protection protocol that combines the We Identity selective disclosure scheme and the PHRP algorithm.Realize the storage,transaction,and query functions of digital resources without compromising the privacy information of users and digital resources.