Thank you to all who participated in the Rubrics Task Group and the September 6, 2023 CTDL Rubric Proposal Webinar. The webinar and audio recordings and presentation are available for your review. 

Your input is highly valued, and we appreciate your contribution towards evolving the Credential Transparency Description Language (CTDL).  Following the webinar is a two-week comment period, and we encourage you to provide feedback on the CTDL Rubric Proposal by Friday, September 22, 2023 using any of the following options:

  1. Use comments to provide feedback directly in the CTDL Rubric Terms Proposal. To add your feedback, select and right-click on the applicable text, then select “+Comment,” fill it in, and select the blue Comment button to save it.
  2. Add comments to  GitHub Issue #892: Rubric Domain Model and Terms Proposal.
  3. Email This account is monitored during normal U.S. business hours.

The CTDL Rubric terms updates are part of an efficient process designed to facilitate organized changes and enhance the enduring value of CTDL Linked Open Data. Credential Engine’s plan includes updating the CTDL family of specifications and implementing these terms within the Credential Registry Publishing System in 2023. We will provide further details on these updates, as well as information on how to participate in an implementation webinar, in an upcoming announcement.

We want to express our appreciation for your interest and active involvement in the CTDL development process. If you have any questions or require additional information, please do not hesitate to contact us at

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