[pdkl95]

Are you using "publisher" to mean anything other than the author of the website? I'm not sure. It seems like you're suggesting that the ad network is the publisher, and the actual website is just "hosting", but I may be parsing your comment incorrectly.

As for any concerns that advertisers not trusting the publications they want to do business with, that's their problem. They can easily verify that a website's url-encrypting-proxy isn't modifying their ads with random anonymous checks. Contracts that require the publisher to pass through the ads unmodified (and with the appropriate HTTP headers or any other technical detail) would be the obvious next step.

There are several other obvious ways for advertisers to gain power over the actual publishers of a website, but I'm not really interested in enumerating ways to keep ads on the internet.

[throwaway2048]

You wouldnt have to tamper with existing data comming from site visitors, you could just simply generate fake visits. That would be much much harder to check for. You could of course do that with the current model, but it requires a lot more resources (distributed IP addreses to come from being the largest issue).

Since this is specificly targeted at getting around adblocking, the ad networks wouldnt be able to rely on cookies etc because the same types of visitors will often block/clear them.