this post was submitted on 15 Apr 2025
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You don't need an email at all to post on 4chan. You don't register to use 4chan or post on 4chan. The only logins are for staff. People are making up and spreading rumors that don't even know how 4chan works.
You haven't been there in a few years clearly, they added a rate limit (Waiting period) to posting initially from mobile devices and a timer between posts that you can skip by registering an email a while back. You can also purchase a 4chan pass to bypass this completely, which requires an associated registered account. It's interesting to see people who haven't interacted with the site in a long time espousing that they have expert opinions on it.
I haven't used 4chan since like 2008, so no idea how its changed.
I do remember a username/password mechanic but can't remember how it worked.
Trip codes are I think what you're taking about, not all boards had them enabled but they were a way of authenticating a user on the boards that did
It just added a hash of the password to your posts so that others could verify which user made the post. These hashes were easily cracked though. The username could be anything you want. There was no account creation