BID-HCP: Blockchain Identifier Based Health Certificate Passport System

Zhang, Y.; Liu, Y.; Chi, C.

The COVID-19 outbreak severely affected daily life. The World Health Organiza-tion stated that quarantine was the most effective way to control the spread of the epidemic before the vaccine was developed, but this also led to economic recession. At present, there is an urgent need for solutions to ensure the normal schedule of life while reducing the spread of the epidemic. Several contact tracking solutions have been proposed in the market, but they all have certain limitations, such as health certificates do not recognize each other, and user information is leaked. This paper proposes a health passport system based on blockchain identifier (BID-HCP), which ensures that uninfected people travel normally through a unified health certificate passport. What’s more, the method separates the user’s location information from the user’s identity effectively, which protects the user’s privacy and efficiently analyzes the high-risk areas of the epidemic. © 2021, Springer Nature Switzerland AG.