@fBmsbWNr38q4Hs honestly, we kind of have that now. I kind of touch on that at Daily Expiring Sync Codes: Not Meant for Backup.
We still can get the final word that changes daily, which kind of makes it simple as long as we keep the rest of the code. It’s just that they have claimed that will eventually change.
It used to remain the same at all times, but too many people were stupid about things. They scanned the code provided in help articles which shared passwords with other people doing the same, posted screenshots of their codes on forums and social media when asking for help, etc. Brave responded to the idiocrasy by making codes expire. But then tons of people complained because they couldn’t recover data, so they ended up with the situation we’re at now…codes expire but we have a means to still use them.