I'm God. What evidence do I need to provide?

[Mystic]

You are now going to how would God prove he is speaking to someone or revealing a revelation, however, God would never be in front of anyone, far exalted he be above that.

That's why I said the better philosophical game would be "I am a Messenger from God, what do I have to do, to prove it to you".

And the questions has two segments:

1) To your generation.
2) To lasting generations.

They are two different answers.

The number 1 is easy. The number 2 is more difficult.

You're going to have to explain how Allah is not subject to the hard philosophical problems of induction and solipsism.
How can It know that It is not a created being and ignorant of that fact?
'It just does' is not an adequate answer.

This is a recursive problem in which you've stopped at the first step.
Every time we've been able to look farther, reality is shown to be greater than we thought.
Why does your God not have the same issue?

God knows himself, and he being such as that he is absolute life, he knows he misses nothing in it's absence and encompasses all possible "life". He sees himself which is a witness to all things, and his knowledge of himself, is knowledge of all things. He is the absolute being such that there is nothing to keep him company nor anything to miss in it's absence.