So my additional input is this. I’m also looking at the pad and see the damage. I zoomed in to see the pad looks like the block either had some really bad man handling (possibly to get an oil pan down in the car) or dented up with a hammer because the machined boss does look extremely smooth where all my blocks have a grinder curve like a flat stone was used like when a flywheel is properly machined. Slow speed machine - kinda rough and grainy if I’m honest.
Side note: if this block has your vin number and no other block shows up with “your vin” then logic states it is yours. Even if down the road it appears to be faked the odds are it’s your block. “IF” you can afford it and can sit on it, the block has value. If you do not have the money to buy the block then wondering about if it is real or not is pointless. We all know there are con artist in this world. The real question is “can you afford to be conned?”
Best of luck to you because if that is your block you just hit the lottery twice in one day.