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.

September 2025 CTDL Release (20250926) (Current Release)

This is the September 2025 CTDL release.

View Terms | Jump to Mapping Changes

ceterms:dateEffective View Term History: JSON Turtle

Change:

  • rdfs:comment: Added
    en-US Date after which this resource is available or applicable.
  • rdfs:comment: Removed
    en-US Effective date of this resource's content.

Reason:

en-US clarify defintion
https://github.com/CredentialEngine/Schema-Development/issues/1011

ceterms:ProcessProfile View Term History: JSON Turtle

Change:

  • rdfs:comment: Added
    en-US Entity describing the type, nature, and other relevant information about a process.
  • rdfs:comment: Removed
    en-US Entity describing the type, nature, and other relevant information about a process related to a credential.

Reason:

en-US Generalize the definition of ProcessProfile
https://github.com/CredentialEngine/Schema-Development/issues/1005

learnMethod:AugmentedReality View Term History: JSON Turtle

Change:

  • vs:term_status: Added vs:unstable
  • skos:inScheme: Added ceterms:LearningMethod
  • skos:definition: Added
    en-US Provides interactive learning experience through technology that superimposes a computer-generated image on a user's view of the real world, thus providing a composite view.
  • skos:prefLabel: Added
    en-US Augmented Reality

Reason:

en-US Include additional leanring method concepts: Simulation and Augmented Reality
https://github.com/CredentialEngine/Schema-Development/issues/578

learnMethod:Simulation View Term History: JSON Turtle

Change:

  • skos:inScheme: Added ceterms:LearningMethod
  • vs:term_status: Added vs:unstable
  • skos:definition: Added
    en-US Provides interactive learning experience through imitation of a situation or process.
  • skos:prefLabel: Added
    en-US Simulation

Reason:

en-US Include additional learning method concepts: Simulation and Augmented Reality.
https://github.com/CredentialEngine/Schema-Development/issues/578

Mapping Changes Implemented in this Release