The Vrije Universiteit Amsterdam doctorate regulations specify that the PhD candidate, supervisor and co-supervisor must at all times observe the norms for scientific integrity as formulated in the Netherlands Code of Conduct for Scientific Practice by the VSNU. During the closed part of the PhD ceremony, this declaration also has to be pronounced. More background (in Dutch) about these code of conduct can be found at the website of the VNSU .
The Vrije Universiteit Amsterdam requires all PhD students to sign a statement regarding scientific integrity. This is an obligatory step in Hora Finita.
Vrije Universiteit Amsterdam and VU University medical center operate a joint policy for the handling of academic integrity complaints. This complaints procedure outlines the various steps to be taken in the event of a complaint, the officers who play a role in this procedure and what you can expect once a complaint has been submitted. More information can be found here (English) and here (Dutch).