摘要
为实现安全高效的版权授权交易,使原创版权作品得到有效保护。针对区块链技术中的共识机制加以改进,提出一种适应可信版权登记与授权交易场景的DPOS共识机制改进方法。基于信用值和币龄进行设计,采用CES生产函数模型对节点可信程度进行衡量,减少作恶节点当选代表节点的概率;通过基于混合同余算法的随机出块策略和新型区块合法性验证策略,实现区块可信的产生与验证过程,增强共识算法安全性;增加基于出块时间的信用值奖惩机制,增大网络带宽与节点性能更好的节点成为出块节点的概率,提升系统效率。实验结果表明,改进方案可以全面提升区块链系统的安全性和效率,有效应用在版权交易领域,实现可信的版权授权交易。
To achieve safe and efficient copyright licensing transactions and effectively protect the original copyright works,aiming at improving the consensus mechanism in blockchain technology,an improved DPOS consensus mechanism was proposed to adapt to the scenario of trusted copyright registration and authorization transaction.The improved DPOS consensus algorithm was designed based on the credit value and currency age,and the CES production function model was used to measure the node’s credibility,so as to reduce the probability of the evil node being elected as the representative node.The generation and verification process of block credibility were realized through the random block strategy based on the hybrid congruence algorithm and the new block validity verification strategy,which enhanced the efficiency.The credit value reward and punishment mechanism based on the block out time was added to increase the probability that the node with better network bandwidth and node perfor-mance becomes the block out node,so as to improve the system efficiency.Experimental results show that the improved scheme can comprehensively improve the security and efficiency of the blockchain system,and can be effectively applied in the field of copyright trading to achieve reliable copyright licensing transactions.
作者
李一帆
徐雅斌
刘欣然
LI Yi-fan;XU Ya-bin;LIU Xin-ran(Beijing Key Laboratory of Internet Culture and Digital Dissemination Research,Beijing Information Science and Technology University,Beijing 100101,China;School of Computer,Beijing Information Science and Technology University,Beijing 100101,China)
出处
《计算机工程与设计》
北大核心
2022年第7期1825-1831,共7页
Computer Engineering and Design
基金
国家自然科学基金项目(61672101)
网络文化与数学传播北京市重点实验室基金项目(ICDDX004)。
关键词
区块链
DPOS机制
共识机制
奖惩机制
版权授权交易
blockchain
DPOS mechanism
consensus mechanism
reward and punishment mechanism
Copyright licensing transaction
