Cookies
Two small things, and nothing sold to advertisers.
The sign-in cookie is named beehive_session. It is HTTP-only, sent only to this site, and in production it is marked secure so browsers send it over HTTPS. It remembers who you are after Discord login. Logging out clears it.
The cookie note at the bottom of the site stores one line in this browser, beehive-cookie-notice, so the note does not pop up on every visit. That line never leaves your browser.
There is no advertising cookie and no third-party tracker on these pages.