ORCID (Open Researcher & Contributor ID) is a registry of unique identifiers for researchers and scholars that is open, non-profit, transparent, mobile and community-based.

ORCID provides a persistent digital identifier that distinguishes you from every other researcher and contributor and supports automated linkages across all your professional activities.

ORCID provides two core functions:

• a registry where you can obtain a unique identifier and manage a record of activities
• APIs that support system-to system communication and authentication

ORCID is available free of charge to individuals, who may obtain an ORCID identifier, manage their record of outputs and activities, and search for others in the registry.

Publishers and Presses including eLife Sciences, Elsevier, Wiley, Public Library of Science, Hindawi and Institute of Physics Publishing.

Research Institutions such as CERN, Sloan Kettering Cancer Center, National Institutes of Health and the Chinese Academy of Sciences.

Funding Agencies including U.S. Department of Energy, U.S. Food and Drug Administration, The Wellcome Trust, Japan Science and Technology Agency, UK National Institute of Health Research

Learned Societies and Professional Associations such as: American Association for the Advancement of Science (AAAS); American Chemical Society; IEEE; Optical Society; Modern Lanaguage Association, and many more

Scholarly Sharing Service Providers including  Almetric, Dryad, Peerage of Science, CrossRef, FigShare etc.

Major Research Universities including Texas A&M, Harvard University, Cal Tech, MIT, University of Michigan etc.