Research On Copyright Authentication System Based On Blockchain

With the progress of science and technology and the arrival of the information age,people’s demand for copyright is increasing,and various infringement cases of works emerge in an endless stream.The traditional copyright authentication system relies on third-party organizations for authentication,which is complicated,costly and inefficient.Besides,copyright files are saved in the database of the organization.Once the database of the copyright authentication organization is hacked,it is easy to cause property losses of the works’ owners or right holders.As a decentralized distributed database,blockchain is tamperproof and traceable,which can solve the problem of data insecurity in traditional copyright authentication system.Therefore,this paper studies the copyright authentication system based on blockchain technology to solve the above problems.In view of the low efficiency of copyright authentication system based on blockchain technology,this paper analyzes the commonly used Byzantine fault-tolerant consensus algorithm PBFT algorithm from the perspective of consensus algorithm.On the basis of more Efficient HotStuff algorithm,a Dynamic High efficient Byzantine consensus algorithm(DHE-HotStuff)is proposed.Firstly,aiming at the problem that HotStuff algorithm nodes cannot be dynamically expanded,HotStuff algorithm is improved by using dynamic threshold signature scheme,which realizes dynamic entry and exit of nodes and improves the scalability of the algorithm.Secondly,a random master selection scheme is designed for HotStuff algorithm,which reduces the predictability of the master node and improves the security of the algorithm.Finally,a node grouping scheme based on complete binary tree is designed to reduce the pressure of master node aggregation signature in HotStuff algorithm,and improve the efficiency of consensus algorithm.The effectiveness of the algorithm is verified by experiments.Aiming at the problems of poor security and difficult management of traditional copyright authentication system,this paper proposes a copyright authentication method based on alliance chain and NFT technology,and implements the method systematically.To ensure the safety and reliability of copyright authentication with the unique access mechanism of alliance chain;In view of the uniqueness of copyright ownership,NFT(non-homogeneous Token,Non-Fungible Token)is used to identify the copyright of works,which simplifies the copyright management.In addition,the copyright source File is uploaded to the IPFS(Interplanetary File System),and the file hash value is used to confirm the NFT,reducing the storage pressure of the blockchain system.Finally,the performance of the system is tested.