Does CoronaMelder grant access to events and locations?
No, for access another app is available: CoronaCheck. You need a negative test result to access certain locations or activities. With the CoronaCheck-app of via www.coronacheck.nl/en/print (printed version), you can prove that you have been tested negative for corona.
As of the end of June you will be able to create your vaccination certificate. From July on, you can also turn your recovery certificate into a QR-code and you can then use CoronaCheck to travel within Europe.