Design And Implementation Of Prototype System Of Digital Asset Right Confirmation Based On Consortium Chain

At present,the concept of digital society development in which data is used as a means of production and data privacy protection is legislated has been recognized by China and various developed countries,such as the copyright protection of images and videos.However,at present,digital asset management often adopts a centralized confirmation platform,which uses a centralized relational database to store digital asset confirmation information by registering and storing digital asset data.This scheme has the following risks:1)In the scenario where the original data of digital assets is uploaded to the confirmation platform for storage,there is a management risk of the platform’s asset data leakage;2)The phenomenon of centralized confirmation of data assets that is easy to be tampered with or deceived by transactions makes the owners of the data assets unable to obtain the corresponding benefits,which causes the problem of distrust.In order to solve the problem of asset data leakage that may exist in the traditional digital asset confirmation system,this paper integrates homomorphic encryption,digital watermarking technology and blockchain technology,and designs a digital asset confirmation on-chain management mechanism based on the consortium chain.Based on homomorphic encryption and digital watermarking technology,the mechanism designs a method for ciphertext asset data verification and uploading on the chain,and carries out the method of generating watermark information,the on-chain storage structure of verification information,and the process of asset verification and uploading on the chain.The detailed design fundamentally solves the problem of asset data leakage.In order to solve the problem that the data assets with centralized confirmation of rights are easily tampered with or deceived by transactions,and the owners of the data assets cannot get the corresponding benefits,the paper designs a multi-level blockchain structure.Support traceable digital asset confirmation transaction model.In this model,each digital asset’s confirmation transaction records are linked to each other to form the life cycle chain of the digital asset,which improves the speed of data retrieval and the difficulty of tampering.At the same time,based on this model and the previously proposed digital asset confirmation mechanism,the digital asset confirmation transaction process and the digital asset transaction traceability mechanism are designed,which solves the problem of efficient traceability of transaction records in the context of digital asset copyright protection.Finally,based on the above research content,this paper designs and implements a digital asset confirmation prototype system based on the consortium chain,which realizes the functions of credible chaining,confirmation,transaction and traceability of digital assets.This article describes in detail the entire process of requirement analysis,outline design,and detailed design.The system is implemented using the Fabric open source platform and functional tests are performed.The test results show that the system can meet the requirements of digital asset confirmation and transaction services.In summary,for the needs of digital asset confirmation and transaction services,this article respectively designs a digital watermark-based digital asset confirmation on-chain mechanism and a consortium chain-based digital asset confirmation transaction mechanism,which solves the problem of digital asset confirmation and transaction.The user data protection in the process and the tamper-proof issue of confirmation transaction information lay the foundation for the digital asset copyright protection and transaction service platform.