All evidence cannot be validated, but it is still evidence by definition. Evidence does not prove, it only *helps to prove.* Evidence *indicates* that something is true.
If the evidence isn't validated, it is irrelevant. It is also something that must change the probabilities that something is true or false (you can have evidence either way).
And if something indicates the truth or falsity of something, it has to change the likelihood that the thing is true or false by some amount.Evidence: anything that helps to prove that something is or is not true: EVIDENCE | definition in the Cambridge English Dictionary
Evidence: the available body of facts or information indicating whether a belief or proposition is true or valid: https://www.google.com/search
The strength of the evidence is related to how much it changes the likelihood.
Which cannot happen unless the fact (evidence) is verified and changes probabilities.
No, verifiable evidence is not proof of the subject. It is only proof that the piece of evidence is related and valid.Only verifiable evidence can be validated. Verifiable evidence is proof because it establishes something as a fact.
Proof: evidence or argument establishing or helping to establish a fact or the truth of a statement: https://www.google.com/search
Which cannot happen unless the evidence is verified and is relevant.
Fact
something that is known to have happened or to exist, especially something for which proof exists, or about which there is information:
fact
And how do we know it has happened? because it was observed.
Fact
: a thing that is known or proved to be true.
what is a fact - Google Search
Which requires strong evidence, which requires observation.
There is no proof that God exists, since there is no verifiable evidence of God's existence.
Which means the existence is not a fact. And the lack of verifiable evidence means it is irrational to believe the claim.