Data is called the oil of the digital age, and advertising is the engine that ignites these resources. But this multi-trillion-dollar AdTech industry actually stands on a shaky foundation.

There is a classic problem in the advertising world: "I know that half of the advertising spend is wasted, but I don't know which half." Since entering the Web2 era, this ratio has only worsened. Click farms, fake bot traffic, multi-level black-box outsourcing—these tricks steal over $100 billion annually from brands. Advertisers pay for fake clicks, media sell diluted traffic, and ordinary users are trapped in endless privacy tracking. This is hardly a market; it's a "lemon market" where trust has completely collapsed.

To fundamentally reverse this chaos, which is even larger than financial scams, reports from Google or Facebook alone are clearly insufficient—they are both referees and players. What is truly needed is an independent, cryptography-based third-party auditing system. The APRO project is attempting to solve this problem by using zero-knowledge proofs and edge AI technology to create an "Attention Proof of Work" mechanism, aiming to identify genuine human attention within advertising networks—this has been the industry's Holy Grail.

In APRO's new architecture, verification logic has moved from the server side to the user side. This change may reshape the entire advertising ecosystem.