Multi-Blockchain Model for Data Sharing with Bell-LaPadula Access Control

H. C. Chong, K. L. Eddie Law

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


In recent years, the technologies of blockchains, the Internet of Things (IoT), etc. technologies have been drawing attention across different industries. In our experience, during a pandemic, we look for innovations and personalization of secure data sharing on Electronic Health Records (EHRs) to provide better healthcare services. In the paper, we propose a decentralized record management system which is to share data over multiple independent blockchain entities. Each blockchain runs under the administration of an independent healthcare organization. In our design, data would be shared and integrated among multiple Hospital Information Systems (HIS) across different healthcare organizations. It gives doctors and healthcare personnel an easy and safe way to obtain the health records of patients across hospitals dynamically worldwide through negotiated Service-Layer Agreements (SLAs) to provide accurate medical services. Our system leverages blockchain properties to manage access authentication, retrieve medical data, and add new patient data entries. Without a centralized system and database, the design autonomously, dynamically, and securely governs the retrieval and storage of data traffic based on the SLAs. Further, we integrate the system design with the Bell-LaPadula access control model to maintain the confidentiality of security organized in a non-discretionary fashion for different layers of secrecy. Since an HIS runs within the security bounds of a healthcare authority, we can adopt the Proof-of-Authority (PoA) consensus algorithm, which is developed by the Go Ethereum (Geth) team. The PoA provides an efficient, low computational power consumption approach for securely validating the blockchains.

Original languageEnglish
Title of host publicationProceedings - 2023 IEEE International Conference on Blockchain, Blockchain 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages7
ISBN (Electronic)9798350319293
Publication statusPublished - 2023
Event6th IEEE International Conference on Blockchain, Blockchain 2023 - Hainan, China
Duration: 17 Dec 202321 Dec 2023

Publication series

NameProceedings - 2023 IEEE International Conference on Blockchain, Blockchain 2023


Conference6th IEEE International Conference on Blockchain, Blockchain 2023


  • Bell-LaPadula
  • EHR
  • Electronic Health Records
  • Ethereum
  • HIS
  • Hospital Information Systems
  • Internet of things
  • IoT
  • Multiple Blockchain
  • PoA
  • Proof-of-Authority
  • Service-Layer Agreement
  • SLA
  • Smart contracts


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