Why do I have a separate international QR code for every vaccination I've had? And which one should I use?

From now on, you get an international QR code for every vaccination you’ve had in the CoronaCheck app and on coronacheck.nl/en/print This can be useful for people who want to go to a place where their latest vaccination is not yet valid.

Which QR-code should I use?

Which QR code you have to show depends on the demands of the country you’re visiting. Before leaving, please always check which certificate you need at your destination at Netherlands Worldwide.