500 eyewitnesses is pretty good direct evidence.
What if God left a real intriguing clue that the man who died, whose head was covered by the shroud, was truly divine? Say, for example, that the human DNA residue was a “perfect” or otherwise humanly impossible sequence. Now THAT would be wild!
Not only 500 hundred eyewitnesses, but 500 eyewitnesses who were willing to die for their testimony!