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.

June 2026 CTDL Release (20260626) (Current Release)

This is the June 2026 CTDL release.

View Terms | Jump to Mapping Changes

ceterms:ctid View Term History: JSON Turtle

Change:

schema:domainIncludes: Added ceasn:CrtiterionLevel

Reason:

en-US Allow linking Competencies to relevant Rubric Criteria and Levels.

https://github.com/CredentialEngine/Schema-Development/issues/1066

ceterms:specialistSubject View Term History: JSON Turtle

Change:

schema:domainIncludes: Added ceterms:GeneralEducationLevel1Certificate
schema:domainIncludes: Added ceterms:PostMasterCertificate
schema:domainIncludes: Added eterms:AcademicCertificate
schema:domainIncludes: Added ceterms:PostBaccalaureateCertificate
schema:domainIncludes: Added ceterms:Badge
rdfs:label: Added
en-US Specialist Subject
schema:domainIncludes: Added ceterms:SecondarySchoolDiploma
schema:domainIncludes: Added ceterms:MasterDegree
schema:domainIncludes: Added ceterms:CertificateOfCompletion
schema:rangeIncludes: Added skos:Concept
schema:domainIncludes: Added ceterms:Certificate
schema:domainIncludes: Added ceterms:TechnicalLevel2Certificate
schema:domainIncludes: Added ceterms:MicroCredential
schema:domainIncludes: Added ceterms:ResearchDoctorate
schema:domainIncludes: Added ceterms:ApprenticeshipCertificate
schema:domainIncludes: Added ceterms:QualityAssuranceCredential
schema:domainIncludes: Added ceterms:OpenBadge
schema:domainIncludes: Added ceterms:Diploma
schema:domainIncludes: Added ceterms:LearningOpportunityProfile
schema:domainIncludes: Added ceterms:BachelorDegree
schema:domainIncludes: Added ceterms:PreApprenticeshipCertificate
schema:domainIncludes: Added ceterms:DoctoralDegree
schema:domainIncludes: Added ceterms:AssociateDegree
schema:domainIncludes: Added ceterms:WorkBasedLearningCertificate
schema:domainIncludes: Added ceterms:Credential
schema:domainIncludes: Added ceterms:TechnicalLevel1Certificate
schema:domainIncludes: Added ceterms:License
schema:domainIncludes: Added ceterms:Certification
schema:domainIncludes: Added ceterms:SpecialistDegree
schema:rangeIncludes: Added ceterms:CredentialAlignmentObject
schema:domainIncludes: Added ceterms:JourneymanCertificate
schema:domainIncludes: Added ceterms:BasicTechnicalCertificate
vs:term_status: Added vs:pending
vann:usageNote: Added
en-US Normally there will be only one specialist subject; to indicate the general topicality of a resource use ceterms:subject.
schema:domainIncludes: Added ceterms:CertificateOfParticipation
schema:domainIncludes: Added ceterms:DigitalBadge
schema:domainIncludes: Added ceterms:AssociateOfArtsDegree
schema:domainIncludes: Added ceterms:HigherEducationLevel2Certificate
schema:domainIncludes: Added ceterms:ProficiencyCertificate
schema:domainIncludes: Added ceterms:Course
schema:domainIncludes: Added ceterms:AssociateOfAppliedArtsDegree
schema:domainIncludes: Added ceterms:AssessmentProfile
schema:domainIncludes: Added ceterms:Degree
schema:domainIncludes: Added ceterms:AssociateOfScienceDegree
schema:domainIncludes: Added ceterms:ProfessionalDoctorate
dct:description: Added
en-US May be useful for describing credentials, assessments and learning opportunities that cover a general field but with a focus on a specific skill set, for example an apprenticeship in electrical engineering specializing in High Voltage applications. For degree credentials there are also properties for degree major, minor and concentration.
schema:domainIncludes: Added ceterms:MasterCertificate
schema:domainIncludes: Added ceterms:SecondaryEducationCertificate
schema:domainIncludes: Added ceterms:BachelorOfScienceDegree
schema:domainIncludes: Added ceterms:BachelorOfArtsDegree
schema:domainIncludes: Added ceterms:AssociateOfAppliedScienceDegree
schema:domainIncludes: Added ceterms:MasterOfScienceDegree
schema:domainIncludes: Added ceterms:ProfessionalCertificate
schema:domainIncludes: Added ceterms:MasterOfArtsDegree
schema:domainIncludes: Added ceterms:GeneralEducationLevel2Certificate
schema:domainIncludes: Added ceterms:HigherEducationLevel1Certificate
schema:domainIncludes: Added ceterms:CredentialType
schema:domainIncludes: Added ceterms:GeneralEducationDevelopment
schema:domainIncludes: Added ceterms:TechnicalLevel3Certificate
schema:domainIncludes: Added ceterms:LearningProgram
rdfs:comment: Added
en-US Primary academic discipline or professional career path.