Blockchain-Based Security Check Framework in the State of the COVID-19 Epidemic

At present, one of the effective ways to deal with the widespread of COVID-19 is to control the source of infection. As the gate of population flow in various places, the security inspection department plays a vital role in screening positive patients in the population; To solve the problems of credibility and lack of human resources, this paper establishes a security check framework based on the blockchain and combines machine learning with the blockchain: the blockchain records the abnormal results of COVID-19 nucleic acid detection and the abnormal conditions detected by the security inspection system (such as no mask, high temperature); Use machine learning to realize mask recognition and other functions. The architecture, data flow, and key elements are presented and discussed. The study findings could solve the security problem under the epidemic and provide relevant enlightenment for the effective combination and application of machine learning and blockchain.