Question

What could be used as evidence in proving someone was a witch?

Answer 1

If they couldn't recite to Lords prayers. Or if they had birthmarks, warts, moles. Those were seen as a way for the devil to enter their bodies.

Answer 2

"witchs marks" =scars
Or back in the day they used really bizarre evidence like swim tests, where they believed a witch would float with something pulling them down as a symbol that the water is rejecting their body and prayer tests because witches apparently weren't capable of reciting prayers from the bible