I think this idea should be rephrased. I think this is easily confused with the existing "Verified" badge that Twitch Partners have. Unless this is what you mean, in which case I don't think it would ever happen, if every user in chat was suddenly a Verified user.

I love this idea! I was also thinking something along the lines of @LuckyNoS7evin's suggestion, that a chat badge should be semi-automated to save the hassle on Twitch's side, but I agree it shouldn't just be given to someone that signs into the Dev site. I was thinking either when:

* They create an Application (when they receive their tokens/secrets)
* They create an Extension (either when it's actually created, or when it's reviewed/approved by TwitchDev)
* They complete the Developer Onboarding process.