Do you have any interest in relocating outside India? You seem to have a good domain of English and softskills on top of some Linux. I wouldn’t mind taking a look at the personal projects you mention

I think that this is doable for most of the normal population (and likely not novel (which does not diminish its value)) with public private crypto and some authority (eg government issued ids having keys like Portugal) and then using those to authenticate to a service that allows specifically what you want to share. So normally you’d only ever share say age or something