Design And Implementation Of Digital Content Copyright Registration And Trading System Based On Blockchain

With the rapid development of Internet technology,a large number of text works,images,audio and video have been digitized or gradually digitized.And the characteristics of rapid transmission and easy replication of digital contents have led to a considerable number of digital contents being used without authorization.There is a lot of room for optimizing the copyright management of digital content with the traditional copyright management method.Based on the copyright registration and transaction needs of digital content,this paper designs and implements the digital content copyright registration and transaction system based on the blockchain,erasure correction code,WEB development and other technologies.The main research results of this paper are as follows:Firstly,according to the business requirements of copyright management,the blockchain architecture is improved on the basis of Ethereum.Improvements mainly include replacing the original PoW consensus of Ethereum with the Tendermint consensus.Compared with the PBFT,the Tendermint algorithm only needs two rounds of voting to complete the consensus once,which improves the system throughput and saves computational resources.The introduction of CA certificate in blockchain can implement the access of nodes and guarantee the communication security.Transaction filtering module and state data recovery module are introduced to implement the supervision of copyright management blockchain and emergency treatment under unexpected circumstances.Secondly,the distributed technology and erasure codes technology are used to design and implement the storage and backup of digital assets files,which have strong anti-damage ability and low storage requirements.Digital content files are stored in each node after being sliced by erasure codes algorithm.Individual nodes do not have complete file data,so they have higher security.Finally,the system architecture,intelligent contracts and the user management,query the copyright registration and copyright trade and other business modules are designed on the basis of researching on the copyright registration and transaction of functional requirements and non-functional requirements.Implementing the system,the smart contract test and function test.Digital content copyright management innovations,such as digital content copyright registration and transaction process optimization,copyright data non-tamper,traceability,high security,digital content original files reliable storage.