The very first assertion you make is false! There need be no “conspiracy” involving state officials. They are legally bound NOT to release the birth certificate unless Obama or a close relative requests a copy.
So there is no possibility of any official or underling having seen a non-native original BC on file and keeping their mouth shut about it. There is no possibility that anyone in the records office was curious and looked at it before a year ago. Or if it was sealed up back then, nobody in the office mentioned it to anyone outside the office.