Abstract
Blockchain technology is essentially a decentralized database maintained by relevant parties and has been widely used in various scenarios such as logistics and finance. In terms of applications in the medical field, it is becoming more and more important because the patient's symptoms may be related to a certain vaccine. Whether the patient has been vaccinated with this vaccine will lead to different diagnostic results by the doctor. However, in the current vaccination environment of many regions, the vaccination record (VR) can only be kept in the patient's vaccination booklet, which is easy to lose or destroy. Therefore, the doctor needs to retrieve the patient's VR through a centralized database maintained by the government, which is time-consuming and will increase the medical risk. This study proposes a traceable blockchain-based vaccination record storage and sharing system. In the proposed system, the patient gets the vaccination at any legal clinic and the VR can be saved accompanied by the signature into the blockchain center, which ensures traceability. When the patient visits the hospital for treatment, the doctor can obtain the detail of the VR from the blockchain center and then make a diagnosis. The security of the proposed system will be protected by the programmed smart contracts. Through mutual authentication, our system can also provide and guarantee data integrity and nonrepudiation. Moreover, the proposed system has resistance to replay and man-in-the-middle attacks, and the performance is good.
Highlights
Blockchain technology is essentially a decentralized database maintained by relevant parties and has been widely used in various scenarios such as logistics and finance
The patient gets the vaccination at any legal clinic and the vaccination record (VR) can be saved accompanied by the signature into the blockchain center, which ensures traceability
When the patient visits the hospital for treatment, the doctor can obtain the detail of the VR from the blockchain center and make a diagnosis. e security of the proposed system will be protected by the programmed smart contracts. rough mutual authentication, our system can provide and guarantee data integrity and nonrepudiation
Summary
Received 3 October 2021; Revised 30 January 2022; Accepted 14 February 2022; Published 9 March 2022. Is study proposes a traceable blockchain-based vaccination record storage and sharing system. Xia et al [20] introduced an electronic medical record sharing scheme based on blockchain. It cannot be ignored that blockchain-based medical systems still have flaws in the privacy protection of data storage and sharing. How to allow patients to track and grasp their VRs realizing the sharing of vaccine records between different institutions is an urgent problem to be solved. In our proposed traceable blockchain-based vaccination record storage and sharing system, every VR is stored in the blockchain through the smart contract and granted secure data sharing in the future. It is visible that our scheme shows the way to fill the gaps of existing research
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