What is DataCite?

Datacite logo DataCite is a global network of national libraries, data centres and other research organisations that works to increase the recognition of data as legitimate, citable contributions to the scholarly record. DataCite contributes to the emerging research data infrastructure by providing Digital Object Identifiers (DOIs) for datasets and other non-traditional research outputs. DOI assignment helps to make data persistently identifiable and citable. In addition, DataCite promotes standards for data citation and description, and through its network of member organisations, creates an international community of users which helps to establish best-practices for the citation and management of research data.
New Publication: Brase, J., I. Sens, and M. Lautenschlager (2015). The tenth anniversary of assigning DOI names to scientific data and a five year history of DataCite. D-Lib Magazine 21 (1/2).

Take look at estdoi statistics