Apparently there is no record of Chad Gadya before 1570. It could be much, much older. But there is no reason (other than wanting it to be so) to believe it is any older than other versions found throughout the world, or that is the "original" from which all other versions have been copied. As the human race apparently originated in Africa, perhaps the Hottentot version is the original.

But nobody can prove you wrong. Or right. You pays your money and you takes your choice.