This is excellent work; bravo!
I've been working on a similar project recently, and have some recommendations if you would like them, and would love to try to contribute some PRs if you're interested in having some collaborators. In particular, I have some comments on identity validation, among other things, primarily with regards to your current review mechanisms (and citations for why I think said adjustments should be implemented).
Just let me know if you'd like to chat about it at some point :D