![Coov app | Vaccination proof in Korea | QR code vaccine pass | Vaccine certificate from Coov app - YouTube Coov app | Vaccination proof in Korea | QR code vaccine pass | Vaccine certificate from Coov app - YouTube](https://i.ytimg.com/vi/Vdzckrs5lnw/maxresdefault.jpg)
Coov app | Vaccination proof in Korea | QR code vaccine pass | Vaccine certificate from Coov app - YouTube
![Raphael Rashid on Twitter: "Introducing COOV: "the world's first blockchain-based Covid-19 digital vaccination certification app developed by the Korea Disease Control and Prevention Agency and Blockchain Labs - making it impossible to Raphael Rashid on Twitter: "Introducing COOV: "the world's first blockchain-based Covid-19 digital vaccination certification app developed by the Korea Disease Control and Prevention Agency and Blockchain Labs - making it impossible to](https://pbs.twimg.com/media/E0SOtzSVoAExh7O.jpg:large)
Raphael Rashid on Twitter: "Introducing COOV: "the world's first blockchain-based Covid-19 digital vaccination certification app developed by the Korea Disease Control and Prevention Agency and Blockchain Labs - making it impossible to
![Logo of COOV (Corona Overcome), the blockchain-based Covid-19 vaccination certification service by South Korean government, in App Store on iPhone Stock Photo - Alamy Logo of COOV (Corona Overcome), the blockchain-based Covid-19 vaccination certification service by South Korean government, in App Store on iPhone Stock Photo - Alamy](https://c8.alamy.com/comp/2JB1XKE/logo-of-coov-corona-overcome-the-blockchain-based-covid-19-vaccination-certification-service-by-south-korean-government-in-app-store-on-iphone-2JB1XKE.jpg)