http://keybase5btp2qikoau6u326pvotn47gb55mo6fjxxyxdoywiinomr5id.onion/blog/keybase-proofs-for-mastodon-and-everyone
Problems: posting is brittle ; Twitter may not link to a screen with the tweet pre-filled. Also Harald may edit the tweet and mess it up. Twitter will still let him post it, but it will be nonsense. people can post false claims on Twitter ; Keybase wouldn't understand or honor them, but a tweet that's a lie might confuse Twitter users. every site is different ; Keybase needs to understand how to look up tweets, parse them, confirm the author, distinguish usernames, etc.