The ORCID (; Open Researcher and Contributor ID) is a nonproprietary
alphanumeric
Alphanumericals or alphanumeric characters are any collection of number characters and letters in a certain language. Sometimes such characters may be mistaken one for the other.
Merriam-Webster suggests that the term "alphanumeric" may often ...
code to uniquely identify authors and contributors of
scholarly communication
Scholarly communication involves the creation, publication, dissemination, and discovery of academic research, primarily in peer-reviewed journals and books. It is “the system through which research and other scholarly writings are created, ev ...
.
This addresses the problem that a particular author's contributions to the
scientific literature
Scientific literature encompasses a vast body of academic papers that spans various disciplines within the natural and social sciences. It primarily consists of academic papers that present original empirical research and theoretical ...
or humanities publications can be hard to recognize, as most
personal name
A personal name, full name or prosoponym (from Ancient Greek ''prósōpon'' – person, and ''onoma'' –name) is the set of names by which an individual person or animal is known. When taken together as a word-group, they all relate to that on ...
s are not unique, they can change (
such as with marriage), have cultural differences in name order, contain inconsistent use of first-name abbreviations and employ different
writing system
A writing system comprises a set of symbols, called a ''script'', as well as the rules by which the script represents a particular language. The earliest writing appeared during the late 4th millennium BC. Throughout history, each independen ...
s. It provides a persistent identity for humans, similar to tax ID numbers, that are created for content-related entities on digital networks by
digital object identifier
A digital object identifier (DOI) is a persistent identifier or handle used to uniquely identify various objects, standardized by the International Organization for Standardization (ISO). DOIs are an implementation of the Handle System; th ...
s (DOIs).
The ORCID system includes a website and services to look up authors and their bibliographic output (and other user-supplied pieces of information).
Uses
ORCID aims to provide a persistent code for people, to address the problem that a particular author's contributions to scholarly communication can be hard to recognize, as most personal names are not unique, and thus multiple persons of the same name could contribute to the same scholarly field, even from the same institutional department. Further, names can change (
such as with marriage); there are cultural differences in
name ordering conventions; journals make inconsistent use of first-name abbreviations,
name suffixes, and middle initials; and employ different
writing system
A writing system comprises a set of symbols, called a ''script'', as well as the rules by which the script represents a particular language. The earliest writing appeared during the late 4th millennium BC. Throughout history, each independen ...
s and
transliteration
Transliteration is a type of conversion of a text from one script to another that involves swapping letters (thus '' trans-'' + '' liter-'') in predictable ways, such as Greek → and → the digraph , Cyrillic → , Armenian → or L ...
s.
The ORCID organization, ORCID Inc., offers registered users to maintain "a constantly updated ‘digital curriculum vitae’ providing a picture of their contributions to science going far beyond the simple publication list",
hosted by ORCID, edited by the user.
Development and launch
ORCID was first announced in 2009 as a collaborative effort by publishers of scholarly research "to resolve the author name ambiguity problem in scholarly communication".
The "Open Researcher Contributor Identification Initiative"—hence the name ORCID—was created temporarily prior to incorporation.
A prototype was developed on software adapted from that used by
Thomson Reuters
Thomson Reuters Corporation ( ) is a Canadian multinational corporation, multinational content-driven technology Conglomerate (company), conglomerate. The company was founded in Toronto, Ontario, Canada, and maintains its headquarters at 1 ...
for its
ResearcherID system. ORCID, Inc. was incorporated as an independent nonprofit organization in August 2010 in Delaware, United States of America, with an international board of directors.
Its executive director, Chris Shillum, was appointed in September 2020;
he succeeded the founding ED,
Laurel Haak, who was appointed in April 2012.
From 2016, the board is chaired by
Veronique Kiermer of
PLOS (the former chair was
Ed Pentz of
Crossref). ORCID is freely usable and
interoperable with other ID systems.
On 16 October 2012, ORCID launched its registry services
and started issuing user identifiers.
Adoption
* On 15 November 2014, ORCID announced the one-millionth registration.
* On 20 November 2020, ORCID announced the ten-millionth registration.
* , the number of live accounts reported by ORCID was 14,727,479.
To encourage others to join them in supporting the adoption of ORCID, an open letter dated 1 January 2016 was crafted with "publishers that signed this open letter committed to requiring ORCID iDs following specific implementation standards".
In a 2021 update to the
Springer Nature
Springer Nature or the Springer Nature Group is a German-British academic publishing company created by the May 2015 merger of Springer Science+Business Media and Holtzbrinck Publishing Group's Nature Publishing Group, Palgrave Macmillan, and Macm ...
website, they noted that they would thenceforth "support verifying and crediting your
review">eerreview activity directly from our manuscript submission systems to ORCID".
Identifiers
Formally, ORCID IDs are specified as URLs,
for example, the ORCID ID for
Josiah S. Carberry (a fictitious professor whose ID is used in examples and testing) is
https://orcid.org/0000-0002-1825-0097 (both https:// and http:// forms are supported; the former became canonical in November 2017
). However, some publishers use the short form, e.g. "ORCID: 0000-0002-1825-0097"
(as a
URN).
ORCID IDs are a subset of the
International Standard Name Identifier (ISNI),
under the auspices of the
International Organization for Standardization
The International Organization for Standardization (ISO ; ; ) is an independent, non-governmental, international standard development organization composed of representatives from the national standards organizations of member countries.
M ...
(as ISO 27729), and the two organizations are cooperating. ISNI will uniquely identify contributors to
book
A book is a structured presentation of recorded information, primarily verbal and graphical, through a medium. Originally physical, electronic books and audiobooks are now existent. Physical books are objects that contain printed material, ...
s,
television programmes, and
newspaper
A newspaper is a Periodical literature, periodical publication containing written News, information about current events and is often typed in black ink with a white or gray background. Newspapers can cover a wide variety of fields such as poli ...
s, and has reserved a block of identifiers for use by ORCID,
in the range 0000-0001-5000-0007 to 0000-0003-5000-0001.
It is therefore possible for a person to legitimately have both an ISNI and an ORCID ID
– effectively, two ISNIs.
Both ORCID and ISNI use 16-character identifiers,
using the digits 0–9, and separated into groups of four by hyphens.
The final character, which may also be a letter "X" representing the value "10" (for example,
Stephen Hawking
Stephen William Hawking (8January 194214March 2018) was an English theoretical physics, theoretical physicist, cosmologist, and author who was director of research at the Centre for Theoretical Cosmology at the University of Cambridge. Between ...
's ORCID is
https://orcid.org/0000-0002-9079-593X), is a MOD 11-2
check digit
A check digit is a form of redundancy check used for Error detection and correction, error detection on identification numbers, such as bank account numbers, which are used in an application where they will at least sometimes be input manually. It ...
conforming to the
ISO/IEC 7064:2003 standard.
Members, sponsors and registrants
By the end of 2013, ORCID had 111 member organizations and over 460,000 registrants.
On 15 November 2014, ORCID announced the one-millionth registration,
and on 20 November 2020 the ten-millionth registration.
, ORCID reported 1258 member organizations and 14,727,479 live accounts. The organizational members include many research institutions such as
Caltech
The California Institute of Technology (branded as Caltech) is a private university, private research university in Pasadena, California, United States. The university is responsible for many modern scientific advancements and is among a small g ...
and
Cornell University
Cornell University is a Private university, private Ivy League research university based in Ithaca, New York, United States. The university was co-founded by American philanthropist Ezra Cornell and historian and educator Andrew Dickson W ...
, and publishers such as
Elsevier
Elsevier ( ) is a Dutch academic publishing company specializing in scientific, technical, and medical content. Its products include journals such as ''The Lancet'', ''Cell (journal), Cell'', the ScienceDirect collection of electronic journals, ...
,
Springer
Springer or springers may refer to:
Publishers
* Springer Science+Business Media, aka Springer International Publishing, a worldwide publishing group founded in 1842 in Germany formerly known as Springer-Verlag.
** Springer Nature, a multinationa ...
,
Wiley and
Nature Publishing Group
Nature Portfolio (formerly known as Nature Publishing Group and Nature Research) is a division of the international scientific publishing company Springer Nature that publishes academic journals, magazines, online databases, and services in scien ...
. There are also commercial companies including
Thomson Reuters
Thomson Reuters Corporation ( ) is a Canadian multinational corporation, multinational content-driven technology Conglomerate (company), conglomerate. The company was founded in Toronto, Ontario, Canada, and maintains its headquarters at 1 ...
, academic societies and funding bodies.
Grant-making bodies such as the
Wellcome Trust
The Wellcome Trust is a charitable foundation focused on health research based in London, United Kingdom. It was established in 1936 with legacies from the pharmaceutical magnate Henry Wellcome (founder of Burroughs Wellcome, one of the predec ...
(a charitable foundation) also mandate that applicants for funding provide an ORCID identifier.
National implementations
In several countries, consortia, including government bodies as partners, are operating at a national level to implement ORCID. For example, in Italy, seventy universities and four research centres are collaborating under the auspices of the (CRUI) and the
National Agency for the Evaluation of the University and Research Institutes (ANVUR), in a project implemented by Cineca, a not-for-profit consortium representing the universities, research institutions, and the Ministry of Education.
In Australia, the government's
National Health and Medical Research Council
The National Health and Medical Research Council (NHMRC) is the main statutory authority of the Australian Government responsible for medical research. It was the eighth largest research funding body in the world in 2016, and NHMRC-funded res ...
(NHMRC) and
Australian Research Council (ARC) "encourage all researchers applying for funding to have an ORCID identifier".
The French scientific article repository
HAL also invites its users to enter their ORCID ID.
Integrations

Both Wikipedia and
Wikidata
Wikidata is a collaboratively edited multilingual knowledge graph hosted by the Wikimedia Foundation. It is a common source of open data that Wikimedia projects such as Wikipedia, and anyone else, are able to use under the CC0 public domain ...
include pages with ORCID identifiers.
As of 2014 in addition to members and sponsors, journals, publishers, and other services have or had included ORCID in their workflows or databases.
2014 to 2016 some online services created tools for exporting data to, or importing data from, ORCID.
In October 2015,
DataCite
DataCite is an international not-for-profit organization which aims to improve ''data citation'' in order to:
*establish easier access to research data on the Internet
*increase acceptance of research data as legitimate, citable contributions to ...
,
Crossref and ORCID announced that the former organisations would update ORCID records, "when an ORCID identifier is found in newly registered DOI names".
Some ORCID data may also be retrieved as
RDF/XML,
RDF Turtle,
XML
Extensible Markup Language (XML) is a markup language and file format for storing, transmitting, and reconstructing data. It defines a set of rules for encoding electronic document, documents in a format that is both human-readable and Machine-r ...
or
JSON
JSON (JavaScript Object Notation, pronounced or ) is an open standard file format and electronic data interchange, data interchange format that uses Human-readable medium and data, human-readable text to store and transmit data objects consi ...
.
ORCID uses
GitHub
GitHub () is a Proprietary software, proprietary developer platform that allows developers to create, store, manage, and share their code. It uses Git to provide distributed version control and GitHub itself provides access control, bug trackin ...
as its code repository.
See also
*
Authority control
In information science, authority control is a process that organizes information, for example in library catalogs, by using a single, distinct spelling of a name (heading) or an identifier (generally persistent and alphanumeric) for each top ...
*
Digital Author Identifier (DAI)
*
Digital object identifier
A digital object identifier (DOI) is a persistent identifier or handle used to uniquely identify various objects, standardized by the International Organization for Standardization (ISO). DOIs are an implementation of the Handle System; th ...
s (DOI)
*
List of academic databases and search engines
This page contains a representative list of major databases and search engines useful in an academic setting for finding and accessing articles in academic journals, institutional repository, institutional repositories, archives, or other collecti ...
*
Ringgold identifier (RIN)
*
Virtual International Authority File (VIAF)
*
Research Organization Registry (ROR) – similar concept for research organizations
References
External links
*
*
{{Authority control
Academic publishing
Identifiers
Technical communication
2012 introductions
Library cataloging and classification
Scholarly communication
Companies based in Bethesda, Maryland