Definition of proof: "Any factual evidence that helps to establish the truth of something"
My evidence: Jahangir's diary, which documents plans to execute Arjan Dev or try and force him to convert to Islam.
No-one has ever challenged it academically, Muslim or non-Muslim. The Bible has been challenged. The Qur'an has been challenged. This has not been challenged. Ever. By anyone of learning. It is watertight, flawless. There is absolutely zero evidence of forgery. Therefore it is factual.
Therefore I have factual evidence, and by definition, proof.
The point I repeatedly make is that if it is not factual, you should be able to find an academic challenge against it. You cannot.
Response: Says the person who doesn't know the english definition of the word "proof". (Post 592).
Your own words demonstrate you have no proof.