INI
ORCID (Open Researcher and Contributor ID) - INI
ORCID (Open Researcher and Contributor ID) is a non-profit international identifier system designed to uniquely identify researchers and contributors, transparently and reliably connecting them with their contributions and affiliations. It provides a free, persistent 16-digit identifier that conforms to the ISO 27729 (ISNI) standard. The same identifier is used throughout a researcher's career, regardless of name changes, institutional moves, or field changes. Currently, over 1,500 organizations from more than 69 countries are members, with over 10.5 million active users worldwide.
ORCID
researcher identifier
digital identifier
scholarly publishing
research output
open science
ISNI
[item.orcid-format]
code=format
slug=orcid-format
name=ORCID Identifier Format
description=A persistent identifier consisting of 16 digits, conforming to the ISO 27729 (ISNI) standard.
category=Technical Specification
[item.orcid-checksum]
code=checksum
slug=orcid-checksum
name=Checksum
description=The 16th digit checksum conforms to ISO/IEC 7064:2003 MOD 11-2 and is 0-9 or X (representing 10).
category=Technical Specification
[item.orcid-assignment-range]
code=assignment-range
slug=orcid-assignment-range
name=Assignment Range
description=ORCID identifiers are assigned from ranges 0000-0001-5000-0007 to 0000-0003-5000-0001, or 0009-0000-0000-0000 to 0009-0010-0000-0000.
category=Technical Specification
[item.orcid-free-registration]
code=free-registration
slug=orcid-free-registration
name=Free Registration
description=Researchers can register an ORCID iD for free and use it persistently throughout their careers.
category=Service
[item.orcid-privacy-control]
code=privacy-control
slug=orcid-privacy-control
name=Privacy Control
description=Users have complete control over the privacy settings of their ORCID record data.
category=Service
[item.orcid-interoperability]
code=interoperability
slug=orcid-interoperability
name=Interoperability
description=Integrates with major academic publishers, funding agencies, and databases, and can link with other identifiers (ISNI, ResearcherID, Scopus Author ID, etc.).
category=Service
[item.orcid-active-users]
code=active-users
slug=orcid-active-users
name=Active Users
description=As of 2025, there are over 10.5 million active users worldwide.
category=Statistics
[item.orcid-member-organizations]
code=member-organizations
slug=orcid-member-organizations
name=Member Organizations
description=Over 1,500 organizations from more than 69 countries are members of ORCID.
category=Statistics
[item.orcid-attribution]
code=attribution
slug=orcid-attribution
name=Accurate Attribution
description=Distinguishes researchers with similar names and ensures accurate attribution of contributions.
category=Benefits
[item.orcid-form-reduction]
code=form-reduction
slug=orcid-form-reduction
name=Form Reduction
description=Reduces form filling during grant applications and manuscript submissions through data reuse.
category=Benefits