2022-02-252022-02-25https://lib.digitalsquare.io/handle/123456789/77757A EU Digital COVID Certificate (EU DCC) is a digital proof that a person has been vaccinated against COVID-19, has recovered from COVID-19 or has a test result. Therefore, the EU Digital COVID Certificate refers collectively to 3 types of certificates: vaccination, recovery and test. The eHealth Network has published detailed technical specifications describing mechanisms for the interoperability of vaccination, test and recovery certificates (formats and trust management, the EU DCC gateway, 2D barcode, applications, public key certificate governance). In addition, detailed technical structure and value sets to be used in the contents of the EU Digital COVID Certificates are available. Reference implementations are available and have been published as open source. The technical specifications have been officially adopted as a Commission Implementing Decision (EU) 2021/1073 of 28 June 2021, amended by the Commission Implementing Decision (EU) 2021/2014 of 17 November 2021 and 2021/2301 of 21 December 2021. The eHealth Network has collaborated with EU agencies, the Health Security Committee, the World Health Organization and other institutions. Additional work is ongoing to further develop the EU Digital COVID Certificate system. Collaboration with third countries and international organisations is continuing with the goal of enabling international interoperability.2D BarcodeTrust ManagementPublic Key GovernanceCOVID-19 CertificatesVaccination CertificatesTrust FrameworkRecovery CertificatesGatewayValue Sets