FIBREE, Dutch Ministry of the Interior and Kadaster are developing the UOI as an open source key infrastructure-component for interoperable digital real estate landscapes. How can trusted data-networks be created for aggregating and bundling a real-estate object’s distributed data for all relevant stakeholders. The concept is designed for worldwide purpose and is gaining fast growing international attention and interest for piloting. For a video and more info: www.fibree.org/working-group-uoi