How vascular one is can fluctuate based on a number of things like workouts, seasons or the temperature or even after a meal high in sodium. How many of us take a preworkout that pumps up veins and muscles at that so those could change on one among other reasons we could all collectively come up with that make good sense.
The bellybutton though is unique to all of us. I looked at a number of photos and I honestly think it’s probably a match with about 80% confidence, maybe a little higher? Of course the pose one is in and ones body fat percentage and other factors or quality’s create some variables but overall it looks like the bellybutton is tied the same and the skin across the top of it remains tight. That’s allot of correlation to just by chance find another human with the same build, frame chest hair pattern and other visual cues or qualities that seem to probably point in the right direction as well.
Ps Yes I’m bored rn and I’m on a flight for a Memorial Day Weekend trip lol… time to kill here