Credential Transparency Description Language Release History

This page displays the release history for the Credential Transparency Description Language schema. Each release contains a set of changes, which are documented below. Each change describes what was changed, why, and links to one or more relevant Github issues.

December 2025 CTDL Release (20251219) (Current Release)

This is the December 2025 CTDL release.

View Terms | Jump to Mapping Changes

ceterms:ActionStatus View Term History: JSON Turtle

Change:

Reason:

en-US remove incorrect mapping
https://github.com/CredentialEngine/Schema-Development/issues/959

ceterms:approvedBy View Term History: JSON Turtle

Change:

  • rdfs:comment: Added
    en-US Agent that pronounces favorable judgment for this resource.
  • rdfs:comment: Removed
    en-US Organization that pronounces favorable judgment for this resource.

Reason:

en-US Consitency
https://github.com/CredentialEngine/Schema-Development/issues/1027

ceterms:ctid View Term History: JSON Turtle

Change:

Reason:

en-US Allow for stand-alone Process Profiles
https://github.com/CredentialEngine/Schema-Development/issues/1034

ceterms:IdentifierValue View Term History: JSON Turtle

Change:

Reason:

en-US IdentifierValue is not a sub class of dct:identifier
https://github.com/CredentialEngine/Schema-Development/issues/1032

ceterms:name View Term History: JSON Turtle

Change:

Reason:

en-US Allow for stand-alone Process Profiles
https://github.com/CredentialEngine/Schema-Development/issues/1034

ceterms:ownedBy View Term History: JSON Turtle

Change:

  • rdfs:comment: Added
    en-US Agent with an enforceable claim or legal title to the resource.
  • rdfs:comment: Removed
    en-US Organization or person with an enforceable claim or legal title to the resource.

Reason:

en-US Consistency
https://github.com/CredentialEngine/Schema-Development/issues/1027

ceterms:renewedBy View Term History: JSON Turtle

Change:

  • rdfs:comment: Added
    en-US Agent that handles the renewal of the credential.
  • rdfs:comment: Removed
    en-US Organization or person that handles the renewal of the credential.

Reason:

en-US Consistency
https://github.com/CredentialEngine/Schema-Development/issues/1027

ceterms:revokedBy View Term History: JSON Turtle

Change:

  • rdfs:comment: Added
    en-US Agent that handles revocation of an awarded credential due to violations or failure to renew.
  • rdfs:comment: Removed
    en-US Organization or person that handles revocation of an awarded credential due to violations or failure to renew.

Reason:

en-US Consistency
https://github.com/CredentialEngine/Schema-Development/issues/1027

ceterms:sameAs View Term History: JSON Turtle

Change:

Reason:

en-US To link to other information about the same progression level / model.
https://github.com/CredentialEngine/Schema-Development/issues/1029

ceterms:subRegion View Term History: JSON Turtle

Change:

  • rdfs:label: Added
    en-US Sub-region
  • schema:rangeIncludes: Added rdf:langString
  • dct:description: Added
    en-US This may be referred to as a county in the United States, a département in France, a district in India, a raion in Russia, a municipio in Mexico, or equivalent terms in other jurisdictions.
  • rdfs:comment: Added
    en-US An administrative subdivision within a country that is intermediate between a region and a locality.
  • vs:term_status: Added vs:pending
  • schema:domainIncludes: Added ceterms:Place

Reason:

en-US Allow second-tier administrative subdivisions to be specified for Jurisdictions and similar location information
https://github.com/CredentialEngine/Schema-Development/issues/1022

orgType:AccreditationBody View Term History: JSON Turtle

Change:

  • skos:prefLabel: Added
    en-US Accreditation Body
  • skos:definition: Added
    en-US Organization that evaluates other resources such as organizations, learning opportunities, credentials, and/or individuals to issue third-party validation that the resource meets certain standards of quality, competency, and integrity.
  • skos:inScheme: Added ceterms:OrganizationType
  • vs:term_status: Added vs:unstable
  • skos:broader: Added orgType:QualityAssurance

Reason:

en-US Provide more distinct types of QA Organization.
https://github.com/CredentialEngine/Schema-Development/issues/878

orgType:Regulator View Term History: JSON Turtle

Change:

  • skos:prefLabel: Added
    en-US Regulator
  • skos:definition: Added
    en-US Organization that regulates other resources such as organizations, learning opportunities, credentials, and/or individuals against established standards and criteria.
  • skos:broader: Added orgType:QualityAssurance
  • vs:term_status: Added vs:pending
  • skos:inScheme: Added ceterms:OrganizationType

Reason:

en-US Provide more distinct types of QA Organization.
https://github.com/CredentialEngine/Schema-Development/issues/878

Mapping Changes Implemented in this Release

ceterms:Place

Changes to properties for this class:

ceterms:ProcessProfile

Changes to properties for this class: