I am not sure what you consider evidence. 132 witnesses saying that they heard three distinct shots is the evidence. There were 3 shells found. Amos Euins looked up at the 6th floor window and saw the rifle fire the last two shots. Harold Norman heard three "bang, click"s. He heard three shells hit the floor. Those who reported only two shots are 17 in number. Hmmm. Let's see.... That is why the WC concluded there were exactly three shots. You disagree with the 132, the three shells, the three bang,clicks. You disagree with the many who recalled the same 1.....2..3 pattern to the shots. But disagreement isn't enough. Disagreement with evidence does not provide evidence for a contrary view. If it were, you could say there is evidence of 6 shots or any number because there is "no evidence" of only three shots. There isn't.
I am not sure what universe you are in. Is this a parallel universe where there were no shots and JFK was not assassinated?
They are all three shot witnesses in this universe, which is the one I am operating in. They all provided evidence of exactly three shots.
I don't quite grasp your logic. Perhaps it is the universe thing.
So to summarize your post there is no proof. Nothing new there.
It turns out overwhelming evidence is really no evidence at all, just your opinion. No evidence at all that there ever was a third shot. The video of the assassination only exhibits evidence of two shots. You have not proven otherwise or even created a question about the possible existence of a third shot. A shot at Z270+ is just a pipe dream. Belief in a third shot at all is just fantasy.
Again, and I cannot stress this enough, the report you believe to be overwhelming evidence was compiled by the HSCA who then dismissed it by stating the witnesses were influenced by the media into inflating the number of shots. The WC gave the same assessment of the witness statements.
The question of the possibility of there being a third shot totally relies on the statements of earwitnesses, influenced by the media, into inflating the number of shots. The large majority of eye witnesses stated there was just two shots.
The fact you cannot prove otherwise should be a clue, but with your history of promoting this nonsense, I am sure you will not come to reality.