Honestly, this whole AI-labeling approach seems to be the opposite approach to take. Instead why not authenticate genuine "non-AI content". Work together with the hardware and software layer with an open approach, building on top of contend id. I appreciate the privacy implications here are complex, and Google is dubious on using any tracking/fingerprinting technology for its self-serving and privacy-invading motivations, but an open cross-industry foundation owning and operating it may be a first step?