This is the first time I've heard of C2PA authentication[0]. It looks like they are digitally signing images from the cameras now to create a chain of authenticity. There's even TruePic[1] that is an authentication service that will show people if an image came from one of these cameras, overlaid on the image (or video) with some Javascript. Interesting way to fight AI images and deep fakes. They are also letting people register their deep fakes[2], but I'm not sure why someone would do that.
0: https://c2pa.org/ 1: https://truepic.com/ 2: https://truepic.com/revel/