It's indeed a belly.
Yep, that's a pork belly (same as what's used for bacon). It's just not trimmed all nice and straight like we often see them!
It can be confusing because the term "pork belly" is somewhat of a misnomer. Not all butchers call them pork bellies; some call it "side meat", which is really a more accurate description. Pork bellies actually come from the outer
SIDES off of the lower rib section (spareribs), extending back to the belly area (hence the name). Most of the time they've had the spareribs, and other meat trimmed off, but you can find whole sides.
I was going to post earlier, but since I was heading to the butcher anyway, I waited so I could snap a pic while there:
My butcher sells them both trimmed, or bone-in, as "Fresh Side Meat".
The Bone-In is the full side with spareribs still attached.Hope this helps, and can't wait to see it cooked on your PBC!
Cliff