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.

October 2025 CTDL Release (20251031) (Current Release)

This is the October 2025 CTDL release.

View Terms | Jump to Mapping Changes

ceterms:alternateName View Term History: JSON Turtle

Change:

rdfs:comment: Added
en-US Alias for the entity including acronyms, alpha-numeric notations, and other forms of name abbreviations in common use.
rdfs:comment: Removed
en-US Alias for the entity including acronyms, alpha-numeric notations, and other forms of name abbreviations in common use such as PhD, MA, and BA.

Reason:

en-US Broaden definition

https://github.com/CredentialEngine/Schema-Development/issues/1016

ceterms:approvedBy View Term History: JSON Turtle

Change:

rdfs:comment: Added
en-US Organization that pronounces favorable judgment for this resource.
rdfs:comment: Removed
en-US Organization that pronounces favorable judgment for this credential, assessment, learning opportunity, or organization.

Reason:

en-US Broaden definition

https://github.com/CredentialEngine/Schema-Development/issues/1016

ceterms:approvedIn View Term History: JSON Turtle

Change:

rdfs:comment: Added
en-US Region or political jurisdiction such as a state, province or locale in which an organization pronounces favorable judgment for this resource.
rdfs:comment: Removed
en-US Region or political jurisdiction such as a state, province or locale in which an organization pronounces favorable judgment for this credential, assessment, learning opportunity, or organization.

Reason:

en-US Broaden definition

https://github.com/CredentialEngine/Schema-Development/issues/1016

ceterms:commonConditions View Term History: JSON Turtle

Change:

schema:domainIncludes: Added ceterms:TransferValueProfile

Reason:

en-US ceterms:commonConditions

https://github.com/CredentialEngine/Schema-Development/issues/1010

ceterms:conditionExcludes View Term History: JSON Turtle

Change:

rdfs:label: Added
en-US Condition Excludes
vs:term_status: Added vs:pending
schema:rangeIncludes: Added xsd:anyURI
schema:domainIncludes: Added ceterms:ConditionProfile
rdfs:comment: Added
en-US Resource that does not count toward fulfilling a constraint, prerequisite, entry condition, or requirement.
schema:domainIncludes: Added ceterms:ConditionManifest
dct:description: Added
en-US Intended for cases where it is simplest to express exceptions to a general requirement, for example when a requirement is met by any Math course except "Access Math".

Reason:

en-US Allow "negative" requirements and exceptions to a general rule.

https://github.com/CredentialEngine/Schema-Development/issues/1003

ceterms:copyrightHolder View Term History: JSON Turtle

Change:

rdfs:comment: Added
en-US Person or organization holding the rights in copyright to this resource.
rdfs:comment: Removed
en-US Person or organization holding the rights in copyright to entities such as credentials, learning opportunities, assessments, competencies or concept schemes.

Reason:

en-US Broaden definition

https://github.com/CredentialEngine/Schema-Development/issues/1016

ceterms:hasGlossary View Term History: JSON Turtle

Change:

schema:domainIncludes: Added ceasn:CompetencyFramework

Reason:

en-US Competency Frameworks can have glossaries

https://github.com/CredentialEngine/Schema-Development/issues/1017

ceterms:offeredBy View Term History: JSON Turtle

Change:

schema:domainIncludes: Added ceterms:FinancialAssistanceProfile

Reason:

en-US Describe Financial Assistance that is available from various sources

https://github.com/CredentialEngine/Schema-Development/issues/995

ceterms:offersFinancialAssistance View Term History: JSON Turtle

Change:

rdfs:label: Added
en-US Offers Financial Assistance
schema:domainIncludes: Added ceterms:CredentialOrganization
schema:domainIncludes: Added ceterms:Organization
schema:domainIncludes: Added ceterms:QACredentialOrganization
schema:rangeIncludes: Added ceterms:FinancialAssistanceProfile
rdfs:subPropertyOf: Added ceterms:offers
vs:status: Added vs:unstable
rdfs:comment: Added
en-US Description of financial assistance offered by this organization.

Reason:

en-US Describe Financial Assistance that is available from various sources

https://github.com/CredentialEngine/Schema-Development/issues/995

ceterms:recognizedBy View Term History: JSON Turtle

Change:

rdfs:comment: Added
en-US Agent that acknowledges the validity of the resource.
rdfs:comment: Removed
en-US Agent that acknowledges the validity of the credential, learning opportunity of assessment.

Reason:

en-US Broaden definition

https://github.com/CredentialEngine/Schema-Development/issues/1016

ceterms:recognizedIn View Term History: JSON Turtle

Change:

rdfs:comment: Added
en-US Region or political jurisdiction such as a state, province or locale in which the resource.
rdfs:comment: Removed
en-US Region or political jurisdiction such as a state, province or locale in which the credential, learning resource, or assessment has been publicly recommended, acknowledged or endorsed.