Target only Inventory with Ads.txt
For a more transparent and brand safe campaign delivery, when you target 'Only inventory with Ads.txt' in the Publishers section of your campaigns.
Once switched on, a drop-down menu will appear, where you will be able to select:
(default) Direct: only Direct Ads.txt publishers
Resellers: resellers ads.txt publishers
Verified: verified Ads.txt publishers
Select all.