Not a cryptocurrency but in some sense, there is already something similar like that under Google. If you know, Alphabet Inc is the parent company of Google and it's revenue comes from the advertisement of Adsense and Google Ads. Now those two pay the web and youtube creator content with ads money from the publisher but pretty much everything under their control. From how they take a cut from your payment to even subtract if they see a foul play. Just a switch and they could move the whole thing to crypto.