trust.txt is an initiative by JournalList to systematically and transparently disclose connections between journalists, publishers, and associations.
To verify that your trust.txt file has been implemented correctly, visit the following URL, replacing enteryoururl.com
with your actual website domain:
https://www.enteryoururl.com/trust.txt
If you are working with JournalList, you can find the trust.txt specifications here:
https://journallist.net/reference-document-for-trust-txt-specifications