This is such a crazy specific question that I'm not sure why you'd trust an internet stranger. By all means, you should contact another kitchen professional or a professional that is familiar with the laws this would fall under.

If you're just looking for some random person to give you some reason to just feel satisfied, yeah it's yours, don't pay them and just keep the machine. Write your name on it and back date the signature and then tell them to show proof of purchase and ownership. Nothing matters, just do what you want.