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Distributed medical data storage model based on blockchain technology

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Abstract

In the field of distributed medical data storage, relayed data is usually kept centrally on the central node, which may lead to an increased risk of a single point of failure and security challenges from malicious tampering. While introducing backup nodes can partially alleviate these issues, the efficiency of synchronization and switching between nodes remains constrained. In addition, nodes storing relayed data can reach a consensus to modify the forwarded data, which lacks trustworthiness. Given the problems faced by traditional distributed storage in the field of medical data, combined with the characteristics of blockchain technology, we propose a distributed medical data storage model based on blockchain technology, named DDS (Decentralized Distributed Storage), which is intended to be applied in medical data management. In the DDS model, we embed relay data into blocks for storage and ensure the integrity and security of relay data for medical data by introducing redundant blockchain storage and collaborative verification mechanisms. The model is divided into two key phases: the storage phase of relay data of medical data and the verification phase. In the storage phase, the doctor’s signature and the associated copy location data are sent to multiple validation nodes, after which the relay data block of medical data is generated and written to the blockchain. In the validation phase, the node first verifies whether the local relay data blockchain state is consistent with the global state. If it is not, a state synchronization operation is performed. Next, the validation node retrieves the local relay data blockchain to verify the integrity of the medical data relay data. From the theoretical analysis and experimental results, the DDS model can ensure the traceability and integrity of relay medical data and has good concurrent processing performance and less impact on the efficiency of medical data storage.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 71972165,61763048), Key Projects of Basic Research for Science and Technology Foundation of Yunnan Province (No. 202001AS070031), Special Foundation for Local Science and Technology Development Guided by the Central Government of Yunnan Province Science and Technology Deatment (No.202307AB110009), Science and Technology Foundation of Yunnan Province Education Department (No.2023J0657), Yunnan Key Laboratory of Blockchain Application Technology (No.YNB202104).

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Authors and Affiliations

  1. Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, China

    Changyu Duan

  2. Yunnan Key Laboratory of Service Computing, Yunnan University of Finance and Economics, Kunming, China

    Changyu Duan, Rong Jiang & Yi Zhang

  3. Yunnan Academy of Scientific and Technical Information, Kunming, China

    Bin Wu

  4. Yunnan Traceability Technology Co., Ltd, Kunming, China

    Fengliang Li

  5. Faculty of Electronic and Electrical Engineering, Zhengzhou Institute of Science and Technology, Zhengzhou, China

    Yu Duan

  6. Yunnan Key Laboratory of Blockchain Application Technology, Beihang University Yunnan Innovation Institute, Kunming, China

    Fengliang Li

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  1. Changyu Duan
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  3. Yi Zhang
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  4. Bin Wu
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Contributions

Author Contributions All authors contributed to the study's conception and design. Rong Jiang proposed the idea of this paper and designed the study. Changyu Duan designed the study and wrote the manuscript. Rong Jiang reviewed and edited the paper and offered constructive suggestions. Rong Jiang and Changyu Duan prepared Figures 1-13 and Table 1. All authors have read and agreed to the final version of the manuscript.

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Correspondence to Rong Jiang.

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Duan, C., Jiang, R., Zhang, Y. et al. Distributed medical data storage model based on blockchain technology. Cluster Comput (2023). https://doi.org/10.1007/s10586-023-04207-3

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