If Bae is not Rumples real son, why would the globe work? He found his son with his blood at the white globe Coras has given him in the area of New York.
Yeah…I think that the blood he used would put an end to the question of whether he was his biological son or not. My thinking is that the only reason Zoso implied that Bae wasn’t Rumple’s was to push him over the edge into using the dagger…he had to get angry or upset enough that he would forget how afraid he was.