No one's forcing you to do anything. If you don't feel like sharing your private information publicly, you can choose to involve trusted community members like LoyceV who can verify the evidence you provide.
I'd say that no private data can prove anything in this case. Which data can it be? KYC? First it is against the basic ideas of true crypto. Second it can be easily falsificated. What else?
I don't think we should burden any respectable forum user with any private data of anyone else, especially when there is no vision of how it can prove anything. First we have to be sure that that sensitive information can significantly help but even then we can only think if we can ask someone to help with that, and the one who can probably be asked have all grounds for refusal.