You made the claims a looong time ago. jood agrees and says it's easy to prove. No one has done so yet.
The burden of proof is on you guys. If you don't want to prove it then how can you argue your point?
For me the proof is in actual application and sound training methods. I research history of karate for fun, but all that goes out the window in application. I never ask my teacher to prove that the application they teach me or technique goes back x number of years. If it works and fits into the training paradigm that they are teaching I take their word for it. Mainly because that is the way okinawan karate was mostly transmited. That is the way I have always been trained. In fact, my teacher laughs at me for coming on here and dropping this stuff on you guys. He said I should use the time for training. I think he might be right.