What is ads.txt? Think about it as your whitelist: the companies you authorize to advertise your products or services. Here is an example: https://elpais.com/ads.txt In a data-driven world, with multi-touch attribution systems, it seems to me that a text file in your domain is not the more sophisticated way to public whom you trust your brand. Especially when this information can be used to authorize (or block) third-parties to advertise on your behalf. I think it is a step forward in the right direction to fight ad fraud. As ads.txt evolves, I can see companies finding ways to automate how this file is created and updated and to use it for automatically whitelist publishers. Or even alert the user if an ad fraud is in progress. 
Founder & CEO at InTheValley
I help startups fix engineering teams that should be moving faster. If you're scaling a startup, you've probably felt the pain: great people on paper, but execution feels slow. I've been building remote teams for startups since 2005 — engineers you can trust who actually deliver and know how to leverage AI to ship faster.
Latest posts by Leo Celis (see all)
- Stop Consuming AI and Start Riding AI - 04/29/25
- You are in a Reorg Bubble about to Explode - 04/22/25
- The Wrong AI Tool Is As Bad As the Wrong Hire - 04/15/25