For some reason I can't quote your post, so I'll just say it.

I honestly wouldn't take the word of the guy you bought it from as I think he's just lying to you. I think he's just telling you what you want to hear, and unless he actually shows you the paperwork I'd take what he says with a grain of salt. Now I could be wrong, and I've gone by this saying for a long time: "Believe nothing you hear, and half of what you see." He would remember who he got the snake from and even he has a lot of snake one would presume he has experience and he had enough since to know it wasn't a Black Pastel.

You can hope if you want, but I honestly wouldn't get your hopes up. I'm willing to bet he doesn't produce that paperwork. Now it's a nice snake and all but I've learned from experience that if you give a stranger a chance to get over on you, then they usually will.