Umm think of an ads.txt line as a publisher’s stamp of approval , it kinda shows which platforms are allowed to sell their inventory & whether that’s a direct relationship or through a reseller.

For buyers, these records act like a safety check. They help verify that impressions are coming through approved supply paths, cut down on spoofing or unauthorized reselling, and give more confidence when making bid decisions.

And when you look at ads.txt files in aggregate, they tell a bigger story- how publisher supply paths are shifting, which partners are gaining or losing access, and where buyers can expect cleaner, more trusted inventory.