Question: The stack exchange question "Is there any concrete-solid proofs of this space odyssey?" made me want to edit it to remove the s in proofs (someone with enough flair did), however it made me wonder about the plurality of *any* and *proofs*.

So please enlighten me about which one is correct.

> 
> Is there any concrete-solid proof of this space odyssey?  
> 
>  Are there any concrete-solid proofs of this space odyssey?
> 
> 
> 

If the asker wants to hear about at least one proof, the first one is OK, but what is correct if he wants at least two pieces of evidence?

Answer: 
"Proof" is usually treated as a mass noun, and so has no plural: 

"I have proof that ... "

"There is no proof that ... "

"You haven't any proof that ... "

It can be used as a count noun, but usually only in special senses, such as a formal (mathematical or logical) proof:

"His book contains several new proofs of these theorems". 

I would find it strange to read "They produced several proofs of his innocence".
'Is there any proof?' sounds better, but proofs is OK because you can say 'evidences'

'Present your evidences to the court.'