So would be like a modular add on to the core everyone runs? Seems interesting if so. Everyone could have their own 'version' of bitcoin but be compliant at the base layer. Or have I totally got that wrong?! 

 I don’t want to misrepresent CUSF, but this is the last solid thing Paul has written about it. There is code on LayerTwoLabs' GitHub 

https://twitter.com/truthcoin/status/1743073625328992679?s=46&t=KKPpg4jlAEfn5NMRsS08uQ