Could you reveal the answer now?

C2PA isn't a watermark, as it's tacked on to the end of the file. I wouldn't call the camera meta info attached to pictures I take with my phone a watermark, and C2PA is basically just that. I believe that "invisible provenance signals" is referring to something like Google's https://deepmind.google/models/synthid/

What would be your ideal law if not bill 469? Should AI agents be able to form legal personhood?

Seems like this competitor is just fraud, as reported here: I Think Substrate is Fraudulent: Part 1

The problem with gerrymandering is that it makes elections less representative. It seems to me that (section 2 of) the Voting Rights Act makes elections more representative, so that's good. It seems reasonable to be mad at republicans when they implement measures that make elections less representative that benefit them, but not when you want elections to stay less fair.

Did this prediction end up being true? We'll charitably interpret the prediction as being about Anthropic itself

I'd expect if you have a simpler project, more of the code can be written by AI. Creating AI seems like it's on the more complex side of projects, so if 90% of all code is written by AI, I'd expect less than 90% at Anthropic.