Verify Facebook and Twitter without a Public Post.

Hi,

Thanks for your work on Keybase. I'm a huge fan, but I'm disappointed that I can't verify with Facebook or Twitter because you guys rely on posts & tweets as the medium for verification. This is like asking people to create a web page on their website to verify ownership of their website instead of just using DNS or Robots.txt.

I would like to propose that instead of using posts or tweets, allow people to add a special link to their Facebook and Twitter bios (or some other metadata field).

I'm determined to never publish a public Facebook post and I have no plans to ever tweet a Keybase verification. Keybase is awesome, but I don't like it more than my privacy.

Sincerely,

Michael

No files, tests, or entry points are named in the issue. Start by locating the existing Facebook and Twitter verification flow, then determine how profile bio links or other metadata could be checked; the work is done when ownership can be verified without a public post or tweet.

Written by the indexing model from the issue text.