Yes. The objective morality is that of your body. All subjective morality is that of your mind, and it’s all self-contradictory junk that confuses people and makes them do stupid things.

It is very easy to prove its existence. If I try to kill you or hurt you you won’t like it. Your body will resist it. Regardless of what morality you believe in, regardless of your values, regardless of your thoughts and your general situation in life. If I disprove the existence of objective morality to you today, you won’t give a damn about it if I try to kill you tomorrow. It’s not something that I can disprove. It’s not something that must be proven either. You just know it, because it’s reality.

Every other morality is a game of mind. Moral philosophy is still unable to offer one single system which doesn’t produce paradoxes, because it’s all a pretense.