: The domain name of the advertising system (e.g., google.com ).

: Your unique ID associated with that advertising system (e.g., pub-0000000000000000 ).

An ads.txt (Authorized Digital Sellers) file is a simple text file used by website owners to declare which companies are authorized to sell their digital advertising space. It was developed by the IAB Tech Lab to increase transparency and combat ad fraud, such as domain spoofing. Deep Content & Structure