Developers Will Seagar and Walter Lim have created a Chrome extension that will let you know who has paid $8 for Twitter Blue verification. You’ll see an “actually verified” label on original verified accounts, and a “paid for verification” with a blue dollar sign for Twitter Blue accounts. The extension is called eight-dollars (of course!) and you’ll have to manually load it into Chrome.
This Chrome extension tells you who paid for Twitter’s blue checkmark.