Purohit Soumya, Calyam Prasad, Alarcon Mauro Lemus, Bhamidipati Naga Ramya, Mosa Abu, Salah Khaled
University of Missouri-Columbia, Columbia, MO USA.
Khalifa University, Abu Dhabi, UAE.
Peer Peer Netw Appl. 2021;14(5):3012-3028. doi: 10.1007/s12083-021-01153-y. Epub 2021 May 3.
Healthcare innovations are increasingly becoming reliant on high variety and standards-compliant (e.g., HIPAA, common data model) distributed data sets that enable predictive analytics. Consequently, health information systems need to be developed using cooperation and distributed trust principles to allow protected data sharing between multiple domains or entities (e.g., health data service providers, hospitals and research labs). In this paper, we present a novel health information sharing system viz., HonestChain that uses Blockchain technology to allow organizations to have incentive-based and trustworthy cooperation to either access or provide protected healthcare records. More specifically, we use a consortium Blockchain approach coupled with chatbot guided interfaces that allow data requesters to: (a) comply with data access standards, and (b) allow them to gain reputation in a consortium. We also propose a reputation scheme for creation and sustenance of the consortium with peers using Requester Reputation and Provider Reputation metrics. We evaluate HonestChain using Hyperledger Composer in a realistic simulation testbed on a public cloud infrastructure. Our results show that our HonestChain performs better than the state-of-the-art requester reputation schemes for data request handling, while choosing the most appropriate provider peers. We particularly show that HonestChain achieves a better tradeoff in metrics such as service time and request resubmission rate. Additionally, we also demonstrate the scalability of our consortium platform in terms of the Blockchain transaction times.
医疗保健创新越来越依赖于高多样性且符合标准（如HIPAA、通用数据模型）的分布式数据集，这些数据集可实现预测分析。因此，需要运用合作和分布式信任原则来开发健康信息系统，以实现多个领域或实体（如健康数据服务提供商、医院和研究实验室）之间的受保护数据共享。在本文中，我们提出了一种新颖的健康信息共享系统，即HonestChain，它利用区块链技术使组织能够基于激励进行值得信赖的合作，以访问或提供受保护的医疗记录。更具体地说，我们采用联盟区块链方法并结合聊天机器人引导界面，使数据请求者能够：（a）遵守数据访问标准，以及（b）使他们能够在联盟中获得声誉。我们还提出了一种声誉方案，使用请求者声誉和提供者声誉指标在联盟中与对等方建立和维持联盟。我们在公共云基础设施上的实际模拟测试平台中使用Hyperledger Composer对HonestChain进行评估。我们的结果表明，在选择最合适的提供者对等方时，我们的HonestChain在处理数据请求方面比最先进的请求者声誉方案表现更好。我们特别表明，HonestChain在服务时间和请求重新提交率等指标上实现了更好的权衡。此外，我们还展示了我们联盟平台在区块链交易时间方面的可扩展性。
