The Vaccine Certificate Verifier (VCV) is a free Android application developed by the Government of Malaysia. It allows users to verify COVID-19 vaccination certificates issued by the Malaysian government and other countries recognized by the Malaysian government. This app also verifies certificates for COVID-19 test outcomes and recovery by some countries.

VCV users can verify certificates by scanning a QR code displayed on the MySejahtera application or its equivalent used in another country, an electronic PDF version, or a printed paper version of the certificate. Two categories of certificate QR codes are verified by VCV, including a URL of a trusted server that points to identity and vaccination information, and identity and vaccination information with a digital signature issued by a trusted entity.

VCV periodically updates its list of trusted servers and trusted public keys. The present version of this application is capable of verifying certificates from Malaysia, all countries in the European Union Digital COVID Certificate consortium, Brunei, India, Indonesia, Philippines, Syria, and Australia. VCV displays the result of the vaccination certificate verification, and identity and vaccination information is shown only if the certificate is valid. VCV does not retain certificate information for privacy protection.