PublisherDesk

This is a WordPress plugin for clients of The Publisher Desk, intended to automatically propagate changes made to The Publisher Desk’s ads.txt file to client websites, while letting them add/retain custom lines as desired.
<h3>Functionality</h3>
This plugin provides management of the ads.txt file (Authorized Digital Sellers), an initiative from IAB Technology Laboratory, geared towards client of The Publisher Desk. Because the administration of a file outside the wordpress directory can pose challenges depending on the WP/Server configuration, the plugin decides on installation whether to use an actual ads.txt file in the root of the domain, or a quasi-ads.txt file built through a WP option and responding to a server request for “/ads.txt” by providing the contents of that option (containing both custom lines and those associated with TPD’s centralalized list).
Troubleshooting an installation: 
If you already have an ads.txt file present on your site, the plugin will rename it to ads-txt-original.txt on installation, and re-rename that file back on de-installation. If your site’s wordpress instance doesn’t have access to files outside of its installation directory and you already have an ads.txt file, the plugin won’t be able to dislodge the existing file and allow the management of the one it creates. You can check whether this has happened if you check your site’s ads.txt file directly (site.com/ads.txt) and there’s no line reading: 
 “### END TPD ADS TXT ###” 
a line that is used by the plugin to demarcate custom entries and The Publisher Desk’s. If this is the case, please deactivate the plugin, rename or remove your existing file, re-activate, and check the file again (you might have to refresh several times depending on caching). If you still don’t see that line and the file looks the same as before the update, please reach out to TPD for assistance.
Final Note: it’s good practice to have a backup of your custom ads.txt lines. We have functionality for retaining your custom lines on plugin updates/re-installs, but it’s good to make sure since it can be a big pain to recollect entries if you lose them.

The Publisher Desk ads.txt

Ads.txt management tool for publishers in The Publisher Desk portfolio.

Freemius

Pagup

Sajjad Ali

Ad partners are frequently adding new demand sources to their Ads.txt & App-ads.txt lists of authorized sellers.
<ul>
<li>Create your Ads.txt & App-Ads.txt files with the same tool (all-in-one)</li>
<li>Add manual entries (copy-paste) for « ready-to-use » code snippets. </li>
<li>Edit & manage your files on demand</li>
<li>View WordPress Ads.txt & App-ads.txt files before/after publishing</li>
</ul>
Note : Google Ad Manager and AdMob, Google’s mobile ad network, now support app-ads.txt, the anti-ad fraud protocol for app publishers. Why we should care? Google said in April 2019 that its DSP Display & Video 360 would stop buying unauthorized in-app inventory starting in August 2019 (same with Centro). Given its market leadership position, Google’s support for app-ads.txt from both the buy and sell sides will help propel adoption of the standard by app publishers.
How does WordPress Ads.txt & App-ads.txt Manager work to implement app-ads.txt:
Provide a developer website in your app store listings. Ensure that the proper developer website URL is accessible in the developer website section of the app store (advertising platforms will use this website to verify ads.txt or app-ads.txt files).
In WordPress Ads.txt & App-ads.txt Manager, go to setting page.
<ul>
<li>Ad Source Domain 
— The canonical domain name of the SSP, Exchange, system that bidders connect to (they publishes a document detailing what domain name to use).</li>
<li>Publisher ID 
— This must contain the same value used in transactions (i.e. OpenRTB bid requests) in the field specified by the SSP/exchange (For OpenRTB = publisher ID | For OpenDirect = publisher’s organization ID).</li>
<li>Type of Relationship: (Direct, reseller) 
— Your direct demand partners should be listed as “direct.” If your partners are using third-party resellers to sell your inventory, such providers should be listed as “reseller.” In any case, you should not add any provider to your app-ads.txt file unless you or your partner have a direct relationship with them.</li>
<li>Ad Source ID 
— An ID that uniquely identifies the advertising system within a certification authority. </li>
</ul>
Do it for all your authorized digital sellers or resellers of your ad inventory.
Click « Save changes » and WordPress Ads.txt & App-ads.txt Manager plugin will create a virtual .txt file in the root of your website; for example, www.mysite.com/ads.txt OR www.mysite.com/app-ads.txt. You can edit the content whenever you need.
Make sure to clear your cache
Note 1 : Use of app-ads.txt is not mandatory, but is highly recommended, especially if you are concerned that others may be spoofing your app.
Note 2 : It can take up to 24 hours to crawl and verify your app-ads.txt files. Please wait at least 24 hours for the app-ads.txt status to update.
Note 3 : Since ads.txt file is supposed to be in the root directory of a domain name, this plugin currently only works for root level domain like example.com. It does not work for WordPress installed in subdomain, subdirectory, or a single site in a multi-site network.
What’s app-ads.txt? 
In June 2017, the <a href="https://iabtechlab.com/ads-txt/" rel="nofollow ugc">IAB</a> (The Interactive Advertising Bureau Tech Lab) launched ads.txt, a file enabling web publishers to designate authorized digital sellers of their ad inventory. Ads.txt helped the industry distinguish real supply sources from fake ones, and after its immediate success and adoption, the next logical step was to extend the reach of ads.txt into the mobile app ecosystem. App-ads.txt is the mobile in-app equivalent of this specification, which mobile publishers can implement.
The app-ads.txt file is the version of ads.txt for mobile in-app and <a href="https://smartyads.com/blog/what-is-ott-advertising/" rel="nofollow ugc">OTT advertising</a>, to combat bad actors that disguise themselves as another company’s app in order to siphon the money that advertisers are spending on mobile and OTT advertising. App-ads.txt files are formatted the same as ads.txt files (<a href="https://iabtechlab.com/wp-content/uploads/2019/03/FAQ-for-ads.txt-and-app-ads.txt-UPDATED-March-4-2019.pdf" rel="nofollow ugc">view IAB FAQ for ads.txt and app-ads.txt</a>).
Thanks to app-ads.txt file, Mobile and OTT app publishers can list the ad tech vendors that are authorized to sell or resell their ad inventory, and programmatic ad buyers can check these lists to make sure that a company claiming to offer an app’s inventory is actually able to sell the app’s inventory.
This file opens the door for a new level of transparency.

Ads.txt & App-ads.txt Manager for WordPress

App-ads.txt & Ads.txt manager allows you to create, manage & publish your app-ads.txt & ads.txt file from your WordPress dashboard.

The Publisher Desk ads.txt vs Ads.txt & App-ads.txt Manager for WordPress