基于区块链的数字版权交易系统

doi:10.11959/j.issn.2096-109x.2018060

Abstract

Abstract:

In the current era of digitalization and networking,the demand for digital copyright transactions is increasing.The traditional centralized copyright protection system has series of problems such as high registration costs,long work acceptance times,and being vulnerable to tampering by saboteurs.Blockchain as a decentralized network structure and based on P2P network and cryptographic technology,which can establish trust relationship on the network by pure mathematics.Without relying on the middle platform,blockchain technology can naturally alleviate the above problems.With the help of self-regulatory,traceable and decentralized features of blockchain technology and digital copyright trading scenarios,a digital copyright trading system model was designed.The new system is based on the advanced permissioned blockchain provided by IBM.The implementation of copyright registration and copyright transaction can ensure the integrity and tamper-resistant of the information.Finally,the installation time of chain code deployment was tested.The results show that the system is simple to install and has low maintenance costs.Compared with the traditional trusted third party copyright authentication mechanism,the blockchain-based digital rights trading system has a short registration time,no registration fee,and better architecture security and scalability.

Key words: digital rights trading, blockchain, superbooks, system design and implementation

CLC Number:

TP309.7

Li LI,Siqin ZHOU,Qin LIU,Debiao HE. Blockchain-based digital copyright trading system[J]. Chinese Journal of Network and Information Security, 2018, 4(7): 22-29.

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References 17

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版权注册主要代码
前提：链码初始化，安装到链上，用户利用客户端调用函数名，
传入打包好的新Work结构
function onRegisterOfWork(Work) {
var newWork=work;
return getAssetRegistry('org.whu.dci.management.Work ')
.then(function(){
return getAssetRegistry('org.whu.dci.management.Book')}); //
在账本中记录新的work ，更新账本
}

版权转让主要代码
前提：链码初始化，安装到链上，用户利用客户端调用函数名，传入打包好的新Work结构
function onChangeOwnerOfWork(ChangeOwnerOfWork) {
var newOwner=ChangeOwnerOfWork.newOwner; //获取版权转让的被转让方
var oldOwner=ChangeOwnerOfWork.book.owner; //获取版权转让的转让方
ChangeOwnerOfWork.book.owner=newOwner;
var price=ChangeOwnerOfWork.book.price; //获取转让合约中用户确定的转让价格
newOwner.balance=newOwner.balance-price; //从被转让方的钱包中扣除转让费
oldOwner.balance=oldOwner.balance+price; //在转让方的钱包中增加转让费
UpdateUserRegister(); //更新账本中用户信息和该数字版权信息
UpdateDciRegister();
return 1;
}

数字内容订阅主要代码
前提：链码初始化，安装到链上，用户利用客户端调用函数名，传入打包好的新Work结构
function onSubscribeWork(SubscribeWork) {
var subscriber=SubscribeWork.subscriber;
var author=SubscribeWork.book.owner;
var subscribePrice=SubscribeWork.book.subscribePrice;
subscriber.bookList.push(SubscribeWork.book); //'书架'上新增一个数字作品
author.balance+=subscribePrice; //author账户钱包数额增加，
subscriber.balance-=subscribePrice; //订阅者钱包数额减少
UpdateUserRegister(); //更新账本中用户信息和该数字版权信息
UpdateDciRegister();
return 1;
}