there's not much else which can be proven.
Hundreds of years worth of Physics experiments are pretty good proof. They prove the mathematical equations and models work. People go one step further by painting pretty little colored pictures of atoms and particles on top of those equations. I'm saying there's no proof for the superfluous physical descriptions of reality as all the experiments prove is the mathematics. The rest is up to you to prove as it's a figment of your imaginations. I don't need to disprove it.