Datos.bne.es is the Linked Data service of the National Library of Spain. It is a joint experimental development by the BNE and the Ontology Engineering Group (a leading pioneering group in Semantic Web in Spain, from the Technical University of Madrid), whose aim is to explore capabilities of an alternative enhanced view of its bibliographic and authority records, based in FRBR as a reference model and Linked Open Data as a web-friendly publishing and exposure frame.