What are some other plaforms people would want us to integrate and verify?

So far I have noted — Spotify & Costco Gold Star Memberships.

An email account, showing the domain only.

Buidling homestaking stuff HomestakerOS.com

Yeah, the idea would be to verify current employer or some other novelty. You could prove in a separate field that you work for e.g. Coinbase or that you study/do research at MIT or whatever without spending space about it in your bio.

Email different than the one you used for signup? Would a pure domain verification work better?