I really like your solution. Have you considered making connections with well connected individuals and potentially making small compromises on your products integrity to appeal to the people who would make this a legislated standard across the board?
Or perhaps golfing at the right clubs to make it a defacto industry standard like ID.me seems poised to become?
I hate seeing stuff like this once and then never again due to people who are capable of making something this… Good being unable to “play the game” or whatever optimize to break the social-moral glass ceiling for a given problem space.