Considering the fact that many scientific data producers do not have the digital infrastructure to provide a persistent and interoperable access to their data, Huma-Num has implemented a new tool called “Nakala” to expose research data in order to facilitate their reuse. Nakala provides mainly three types of services: a permanent identifier to the resource, a permanent access to the data and associated metadata and an exposition of metadata based on semantic web technologies and OAI-PMH server. Nakala