In recent years, vaccine incidents occurred around the world. This paper presents a blockchain based solution to protect the whole process of vaccine circulation. We first propose a model to supervise the vaccine circulation process by incorporating existing regulatory practices. Then, we propose a blockchain based tracing system to implement this model. The proposed system takes the blockchain as a global, unique, and verifiable database to store all the circulation data. Through data insertions and queries on the global, unique database, the proposed system achieves the protection of vaccine circulation. We also implement a proof-of-concept prototype of the proposed system.

中文翻译：

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使用区块链提高疫苗安全性

近年来，世界各地都发生了疫苗事件。本文提出了一种基于区块链的解决方案来保护疫苗流通的全过程。我们首先提出了一个模型，通过结合现有的监管实践来监督疫苗流通过程。然后，我们提出了一个基于区块链的跟踪系统来实现这个模型。所提出的系统将区块链作为一个全球性的、唯一的、可验证的数据库来存储所有的流通数据。通过对全球唯一数据库的数据插入和查询，该系统实现了对疫苗流通的保护。我们还实现了所提议系统的概念验证原型。