Overview

ORCID iD (commonly shortened to ORCID) is a persistent digital identifier assigned to individual researchers and contributors in the scholarly and research ecosystem. It provides a unique, machine‑readable label that distinguishes one person from another, even when names are identical or change over time. An ORCID record can include a researcher’s publications, affiliations, grants, peer review activities and other contributions, and can be used by publishers, funders, data repositories and institutions to unambiguously associate records with a person.

Identifier format and examples

An ORCID iD is a 16‑character identifier usually displayed as four groups of four characters, for example: 0000-0002-4510-0385. It can be shown as plain text (ORCID: 0000-0002-4510-0385) or as a resolvable web address (https://orcid.org/0000-0002-4510-0385). The final character is a check digit calculated using the ISO 7064 11,2 algorithm; that check digit may be a numeral or the letter X. Typical public examples include the ORCID pages for individual researchers, which follow the same URI pattern.

How ORCID is used

  • Disambiguation: separates authors with identical or similar names and tracks name changes over a career.
  • Record linkage: connects a person to works (articles, datasets, software), affiliations, funding awards and other research activities.
  • Workflow integration: used by publishers, funders and institutions to automate submission, reporting and evaluation processes and to reduce manual data entry.
  • Interoperability: works with other persistent identifiers (for example DOIs for publications) and with indexing and discovery systems to improve findability of contributions.

History and governance

ORCID was launched in 2012 as an open, community‑based effort to address researcher name ambiguity and to provide a cross‑publisher, cross‑institution identifier. It is managed by ORCID, Inc., a nonprofit organization governed by a broad membership of stakeholders from across academia, publishing and research administration. Over time ORCID has grown into a shared infrastructure service adopted by many publishers, funders, universities and repositories around the world.

Creating and managing an ORCID iD

Individuals can register for a free ORCID iD and control which parts of their record are visible to the public, to trusted organizations, or kept private. Researchers can add works automatically via integrations with publishers and data services, or they can add items manually. ORCID supports authenticated connections (OAuth) so that organizations can request permission to read or update an individual’s record as part of submissions, grant applications or institutional reporting.

Notable features and distinctions

Unlike institutional identifiers or publisher profiles, an ORCID iD is personal and portable: it remains with a person regardless of changes in employment or geography. The identifier is persistent and designed for both human display and machine processing. Its widespread adoption helps improve accuracy in attribution, enables better aggregation of a person’s outputs, and reduces administrative duplication. For more information or to view an ORCID profile, see the ORCID website.

Because ORCID emphasizes openness and interoperability, many systems provide direct support for ORCID iDs in submission workflows, metadata records and reporting tools, reinforcing their role as a practical, durable handle for researcher identity across the research lifecycle.