I would absolutely set up an alternate email address for use with things I didn't want my identity to be associated with. Possibly several of them. The altern

I would absolutely set up an alternate email address for use with things I didn't want my identity to be associated with. Possibly several of them. The alternative is something like the Zero Knowledge Proofs that Google recently open sourced: https://blog.google/technology/safety-security/opening-up-zero-knowledge-proof-technology-to-promote-privacy-in-age-assurance/ https://blog.google/technology/safety-security/opening-up-ze... This would allow you to prove that you have the certificate that was issued to you, without giving up more detail than that. I think that building that into things is a ways off though.