The eduPersonOrcid is an attribute of the eduPerson Object Class (2016/02). 

The OID for eduPersonOrcid is 

As adoption of ORCID IDs increases to identify and link researchers to their affiliations, grants, peer reviews, and more, services will request this identifier from researchers. The addition of this attribute to researchers’ federation identity will be beneficial to both researchers and service providers. 


ORCID iDs are persistent digital identifiers for individual researchers. Their primary purpose is to unambiguously and definitively link a researcher with their scholarly work products. The ORCID organisation assigns, manages and maintains ORCID iDs. Values MUST be valid ORCID identifiers in the ORCID-preferred URL representation. Each value represents an ORCID identifier registered with as belonging to the principal.



The ORCID iD is a URI with a 16-digit number compatible with the ISO Standard (ISO 27729), also known as the International Standard Name Identifier (ISNI). Assignment of ORCID iDs, by the ORCID Registry, is random from a block of numbers that will not conflict with ISNI-formatted numbers assigned in other ways. ORCID iDs always require all 16-digits and can not be shortened to remove leading zeros. These examples express ORCID iDs in the proper format:

The last character in the ORCID iD is a checksum. In accordance with ISO/IEC 7064:2003, MOD 11-2, this checksum must be "0" - "9" or "X", a capital letter X which represents the value 10.

AAF subscribing organisations who wish to make this attribute available to services for their members must implement a number of changes.

  1. Operate an IdP version 3 or later. If using the AAF IdP Installer to manage the deployment of the IdP service, the following configuration changes may already be available.
  2. Update the AttributeDefinition in the attribute-resolver.xml configuration file,
    <resolver:AttributeDefinition id="eduPersonOrcid" xsi:type="ad:Simple" sourceAttributeID="eduPersonOrcid">
    <resolver:Dependency ref="ldap" />
    <resolver:AttributeEncoder xsi:type="enc:SAML1String" name="urn:oid:" />
    <resolver:AttributeEncoder xsi:type="enc:SAML2String" name="urn:oid:" friendlyName="eduPersonOrcid"/>
  3. Add the eduPersonOrcid definition to the metadata-based-attribute-filter.xml configuration file,
    <AttributeRule attributeID="eduPersonOrcid">
    <PermitValueRule xsi:type="OR">
    <Rule xsi:type="AttributeInMetadata"
    <Rule xsi:type="AttributeInMetadata"
  4. Add the attribute definition to the LDAP or Active Directory service which provides attributes to the IdP Service.
  5. Collect and add user's ORCIDs to the LDAP or Active Directory service.


The ORCID organisation encourages researchers to share their ORCID with organisations as opposed to organisations harvesting researcher identifiers from the ORCID organisation. The ORCID organisation provides guidance on suitable approaches to collecting researcher ORCIDs. The following links may assist organisations locate their researcher ORCIDs.



Internet2 eduPerson Object Class Specification (201602)

AAF eduPersonOrcid Attribute

Swiss Federation Attribute resource

ORCID Structure of the ORCID identifier