At the Washington Conference in 1998, Belgium endorsed the principles regarding looted and lost cultural goods. The museums and cultural institutions cooperated with the Jewish Goods Study Committee and the Compensation Committee to clarify the origin of these cultural goods. These were works of art that may have been the subject of national-socialist robbery or purchases, as well as post-war restitution in and through Belgium.
The research took several years. After these surveys and from the point of view of transparency, it was decided to enter the works of art with an unidentified provenance or with an incomplete provenance in a database in order to obtain more information about the acquisition history. This database mainly focuses on paintings and sculptures that ended up in museum collections after the Second World War. This research is a close collaboration between the Communities, the federal government and the institutions and museums involved.