Again, see my comments in bold above. Your original question from post #1 was answered, so what are you trying to accomplish now?
I can't deal with your in-line bolding rather than sorting out the quotes.
Fabricated story was an answer to your question as to why it might happen. Sure, there could be other ways to do it, but that's not the point. My point was that there's a reasonable explanation as to why it might happen that way.
Even if you do tell a dealer your pin, that's very different than telling a stranger. Just like you'll tell an online vendor your credit card number, and your bank your SSN, but you wouldn't tell anyone else.
When the FRB sent the FA10 and nastygram back to the buyer, it's trivial for the buyer to just look at the FA10 and verify the information is correct, because, you know, it's him, and the form is in his hands.
The FRB says things that are wrong and lies all the time, the existence of the words at the bottom of that form letter don't make it law. The law said it was the *seller's* problem, not the buyers.
It sure looks like the law *still* says it's the seller's problem, not the buyers. (in much the same way that the EOPSS and AG's lists only apply to dealers, not to anyone who buys from them)
I don't think you have to prove anything, the state does. They say, "you didn't notify us of this transfer", and you say, "what transfer", and they say, "this one we're holding the paperwork for right here" and you say, "How did you know about it if I didn't notify you?" I don't see the problem.
The change from FA10/eFA10 to "online portal" is a "universal background check". When you put the LTC numbers into the portal, it does a check with the state's databases to make sure you're *still* a good guy (not a bad guy) so the transaction can proceed.
Contrast that with before, where you did the transfer, and reported it within 7 days. (not a background check)
It's totally stupid, because if anything happens that would cause you to not pass the check, you've been arrested and/or the cops come to your house and take your LTC and all your guns, so you wouldn't even have an LTC to show the seller. The only possible "window of vulnerability" is if someone takes out a restraining order without your knowledge, and you try to buy a gun *after* the restraining order has gone into the MIRCS/EOPS/FRB's computers, but *before* the cops show up at your house to take your LTC. That's a really, really small window of time.