Reference Document for trust.txt specifications

Reference Document for trust.txt

If you want to use the trust.txt system, you do NOT have to read this Reference Document. That said, you will be comforted to know that it is here, and guides the way that this whole system works. If you have technical questions not answered elsewhere on the site, you should find answers here. If you would like to contribute to the next version of this document, please consider joining JournalList.





JournalList trust.txt spec by JournalList, Inc. is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.


May 20, 2020

Document released as draft by Journalist, Inc.

June 17, 2020

Added Microsoft, Digital Content Next and Snopes as reviewers.

June 29, 2020

Board approved and status moved from DRAFT to RELEASED.

September 29, 2020

Added “.well-known” recommendation.

Some small typos and language clarifications.

July 14, 2021

Added two variables: vendor= and customer=

Also added some clarifying language, and some small language fixes.

April 4, 2024

Added variable dealing with Artificial Intelligence: datatrainingallowed=

Also some additional changes for clarity and alignment with other standards.


To make comments to be considered as changes to the Reference Document, you can use the comment form on the home page. Please be sure to include the draft version, page number, and any other information that will help us to make the changes you recommend.

Thank you very much.