Install First CA
The Chrome Web Store listing is on its way. Until it opens, install the same package straight from here in about a minute, on a computer (extensions do not run on phones).
Double click the downloaded file. You get a folder named first-ca. Keep it somewhere it will stay, like Documents: Chrome loads the extension from that folder.
Type chrome://extensions in the address bar and press Enter. In Brave it is brave://extensions, in Edge edge://extensions.
The switch is at the top right of that page. It only lets Chrome load an extension from a folder.
Press Load unpacked and pick the first-ca folder. First CA appears in your extensions. Pin it from the puzzle icon to see the live status.
Reload any X tab that was already open. Under each post about a story, one line shows how many coins launched about it.
A folder install does not update itself. When the Chrome Web Store listing opens, the button on this page switches to it: install from there and remove this copy.
What is inside
The same package that is sent to the Chrome Web Store. It asks for one permission (storage, for your settings) and runs only on x.com. It never asks for a wallet, a key or a signature. Read what it sends in the privacy policy.
Version 1.0.0. SHA-256 of the zip: 1f3d9bc021fa37ceda8bc7c6307de3ac4a9870f5fb20e24fdc61404c85fa6f96