A Digital Health Certificate is an electronic document that verifies an individual's health status, particularly regarding infectious diseases like COVID-19. It typically includes information about vaccination status, test results, and recovery from illness. These certificates are designed to facilitate safe travel and access to public spaces by providing proof of health compliance. Many countries and organizations have adopted digital health certificates to streamline the verification process. They often use secure technology, such as blockchain, to ensure the authenticity and privacy of the information. Examples of such certificates include the EU Digital COVID Certificate and the WHO's Smart Vaccination Certificate.