I'm asking because I honestly can't imagine a solution to this particular problem that is both:
@mttaggart I wrote about the cryptography needed to build a solution a while ago: https://soatok.blog/2025/07/31/age-verification-doesnt-need-to-be-a-privacy-footgun/
The usability on top of the cryptography is a whole 'nother can of worms, though.
And even if you use good cryptography for privacy, if your endpoint leaks your credentials anyway, you still put users at risk.
Further, even if a good solution existed, the ways the laws and regulations that are being written about these verification requirements are often shitty on top of all that.
There's not an easy answer. But there should be.
@soatok @mttaggart I think Yivi actually made this? (Disclaimer: I know just enough crypto to know I have no idea if they got it right)
But meh, if the goal really was to protect children, age verification wouldn’t be on top of the list.