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Do I need a line for Commission Junction in ads.txt

     
4:16 pm on Jul 24, 2019 (gmt 0)

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Adsense wants me to have an ads.txt file and gives the line they need in the file.

I obviously don't want to upset other ads I have on my site (mostly via CJ). However I cannot find anything on the CJ site, or elsewhere, on what their requirements are.
Does that that mean the CJ do not require anything in an ads.txt file?
7:37 am on July 25, 2019 (gmt 0)

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no
8:27 am on July 25, 2019 (gmt 0)

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Ad services will reveal what is required. If they don't say, don't worry about it.
4:07 pm on July 25, 2019 (gmt 0)

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Thank you - that's reassuring.
9:27 pm on July 26, 2019 (gmt 0)

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I have at last received some sort of reasonable response from CJ, which almost sounds as though they have no idea what an ads.txt file is, and that it is simply a requirement of GA .
Is this so?
9:38 pm on July 26, 2019 (gmt 0)

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If all you are running for advertising is GA, then that's probably correct.
8:36 am on July 27, 2019 (gmt 0)

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Ads.txt has been developed to list ad networks which are authorized to propose your ad slots to their advertisers, within the context of bidding system. So in the case of CJ (or any other affiliate networks), no one is selling your ad slots, it's you who decide which ads to show in your slots.
10:14 pm on July 27, 2019 (gmt 0)

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Yep, it's how you mark your own site, to prevent programmatic fraud.
You post your ads.txt file on your website (like you post your robots.txt file), so the world can see who you say are authorized ad sellers of your inventory.

CJ affiliates don't buy your ads space on your site, nothing to do with them.

More explanation here:
[iabtechlab.com...]

See this paragraph there:
~~~~~~~~~~~~~~~~~~~~
When a brand advertiser buys media programmatically, they rely on the fact that the URLs they purchase were legitimately sold by those publishers. The problem is, there is currently no way for a buyer to confirm who is responsible for selling those impressions across exchanges, and there are many different scenarios when the URL passed may not be an accurate representation of what the impression actually is or who is selling it. While every impression already includes publisher information from the OpenRTB protocol, including the page URL and Publisher.ID, there is no record or information confirming who owns each Publisher.ID, nor any way to confirm the validity of the information sent in the RTB bid request, leaving the door open to counterfeit inventory.
~~~~~~~~~~~~~~~~~~~~
8:50 am on July 29, 2019 (gmt 0)

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@RhinoFish ... thanks ... nice short and concise explanation of ad.txt.

Still serving 404's ... but that's a different story. :)
 

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