Yeah, sure , go on and create a server sided anti-cheat. On the day u die, i'll be standing in front of your grave, laughing at you, cause you never realized it wasn't possible.
Jokes aside though, its not possible.
You're acting like you cannot make a server side anti cheat when just about every server has one.. as for an open source client side anti-cheat.. you've already been told several times why your way will fail