Aqui tienes toda la info :
https://www.government.nl/topics/coronavirus-covid-19/visiting-the-netherlands-from-abroad/checklist-entry/from-the-eu
Rules for entering the Netherlands if you are coming from a high-risk country or area
You will need to show proof of vaccination, a proof of recovery (for example a Digital COVID Certificate) or a negative COVID-19 test result.
If you are travelling by air, complete a health declaration form (only when aged 12 or above).
You do not need to self-quarantine.
Do a self-test before you meet other people or go to work or school (even if you have been vaccinated).
Si te vas a "proof of vaccination" tienes mas info de lo que consideran una prueba valida. Aunque te valen los papeles para entrar al pais (los chequean en el avion al embarcar) para entrar a bares, restaurantes etc te va a hacer falta el QR