Hi
Could you please explain more details about your questions, exactly what does Proof-of-Work mean here?
Our extensions work well with Joomla 6. So if you want to use the extensions with Joomla 6, then it will work well
If Proof-of-Work means you want to setup the extensions on a Joomla 6 test site, then later, use it on your live site, then it is OK, too
Regards,
Tuan