Abstract: To solve the problems of inconsistent description of data,existence of data tampering,and lack of trust between data sharing enterprises during the multi-value chain collaboration based on third-party platform,a blockchain-based data sharing method for multi-value chain collaboration was proposed.The framework of blockchain-based multi-value chain collaborative data sharing was proposed,which consisted of data source layer,data integration layer,blockchain service layer,multi-value chain collaborative data sharing layer and multi-value chain collaborative service layer.The data resource metadata model and establishment method for multi-value chain collaborative data integration and sharing were proposed.Then,the mechanism of multi-value chain collaborative data up-linking and the process of data integration,storage to blockchain,sharing were explained.The effectiveness of the proposed method was verified through a real case study of data sharing for multi-value chain collaborative repairment services in the automotive industry.By utilizing the features of transparency,traceability,immutability of blockchain and the encryption algorithm,the security and trustworthiness of the data resource sharing process were guaranteed,which could better promote the development of multi-value chain collaborative services.

Key words: multi-value chains collaboration, blockchain, data sharing, trust mechanism, third-party cloud platform, metadata, automobile repairment

摘要： 针对基于第三方云平台多价值链协同过程中存在数据描述不统一、数据易被篡改、数据资源共享主体之间缺乏信任等问题,提出一种基于区块链技术的多价值链协同数据共享方法。首先提出基于区块链技术的第三方云平台多价值链协同数据共享框架,该架构由数据源层、数据集成层、区块链服务层、多价值链协同数据共享层、多价值链协同服务层组成;然后提出面向多价值链协同数据集成与共享的数据资源元数据模型与建立方法;接着阐述了多价值链协同数据上链机制以及数据集成上链与共享过程;最后通过面向汽车行业多价值链协同维修服务的数据共享真实案例,验证了所提方法的有效性。区块链透明公平、可追溯、不可篡改的特点以及加密算法可以保障数据资源共享过程安全可信,更好地促进多价值链协同服务发展。

关键词: 多价值链协同, 区块链, 数据共享, 信任机制, 第三方云平台, 元数据, 汽车维修