摘要
为有效解决地理数据交易过程中交易双方互信问题,本文提出了一种结合零水印、IPFS和智能合约技术的地理数据交易存证与版权保护模型。该模型利用区块链结合IPFS网络构建了一种新型的零水印注册机制,消除了对第三方IPR机构的依赖,还通过智能合约的设计在零水印注册的同时将交易信息上链永久存证,实现零水印注册的时间戳认证。模型中区块链存证的不可篡改性与智能合约自动执行的运行机制使交易双方能够在无第三方监管的情况下,达成共识、实现互信。在模型基础上,以开放联盟链作为智能合约开发平台,实现了地理数据交易存证与版权保护系统。利用本系统,交易双方可调用智能合约获取链上交易凭证,再通过从IPFS网络下载的零水印提取数据的水印信息,最终结合交易凭证与水印信息进行数据版权确认与来源追溯,进而有效地维权或解决纠纷。试验表明,本文提出的方法能够同时保障交易双方权益并保护交易数据安全。
In order to effectively solve the trust problem of both parties in the process of geographic data transaction,this paper proposes a geographic data transaction certificate and copyright protection model combining zero-watermark,IPFS and smart contract technology.The model uses the IPFS system to build a new mechanism for zero-watermark registration,which can eliminate the dependence on third-party IPR institutions.Through the smart contract design,the zero-watermark information is registered,and the transaction information is stored permanently in the blockchain to realize the time-stamp authentication of zero-watermark registration.The tamper-resistant of blockchain and the automatic execution mechanism of smart contract in the model enable both parties to reach a consensus and achieve mutual trust without the supervision of a third party.Based on this model,this paper uses“Ant OpenChain”as a smart contract development platform to develop a transaction and copyright protection system for geographic data.With this system,both sides of the transaction can call the smart contract to obtain the transaction certificate from the blockchain.Then,the watermark information is extracted by the zero-watermark downloaded from the IPFS network.Finally,the data copyright can be confirmed and the source can be traced effectively for protecting rights or solving disputes by combining the transaction certificate and watermark information to confirm.Experiments show that the proposed method can protect the rights and interests of both parties and protect the security of transaction data simultaneously.
作者
朱长青
徐鼎捷
任娜
崔瀚川
赵亚宙
ZHU Changqing;XU Dingjie;REN Na;CUI Hanchuan;ZHAO Yazhou(Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing 210023, China;State Key Laboratory Cultivation Base of Geographical Environment Evolution (Jiangsu Province), Nanjing 210023, China;Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China;Nanjing Geo-Marking Information Technology Co., Ltd., Nanjing 210023, China)
出处
《测绘学报》
EI
CSCD
北大核心
2021年第12期1694-1704,共11页
Acta Geodaetica et Cartographica Sinica
基金
国家自然科学基金(42071362,41971338)
江苏省自然科学基金(BK20191373)。
关键词
地理数据
区块链
零水印
交易存证
版权保护
模型
geographical data
blockchain
zero-watermark
transaction certificate
copyright protection
model
