As Bart H. mentioned, the Belgian base registry model includes a boolean property "isAuthoritative" to indicate that a dataset or part of a dataset (called data element) is the official base data —a base registry can be a mix of authoritative and non-authoritative elements, e.g. a company base registry may also contain addresses because the official address registry is not yet in production.
There is always controversy when those flags are used to describe things semantically, but this is a direct solution to describe master data and the parts that are official or not. Declaring this property is mandatory in this model.
Proposal: to create the property 'isAuthoritative' to describe if data (dataset/datasource/data-element) is official or not.