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The metadata describing an entity is provided by the registrants to the Registration Agency (RA) which provides the registration service. The metadata must follow strict rules which are guided by a set of principles derived from the INDECS (interoperability of data in e-commerce systems) project. The aim is to achieve metadata interoperability and the automated integration of metadata in the DOI System.
This section introduces the principles and tools of the DOI metadata system. For more information, see DOI Metadata.