The only direct proof of that would be either the computer logs, security microfilm roll with the BC’s in question, or a genuine, original 1961 birth certificate for Virginia Sunahara.
Inspection of the latter by a close relative of the registrant is a required disclosure according to Hawaii’s UIPA, but Hawaii is refusing to obey those laws.
Which is strong circumstantial evidence that there is foul play and that the HDOH itself is willing to break laws to cover up the foul play.
The indirect evidence that the BC# and “date filed” combination on Obama’s forged BC would require the unusual circumstances that Virginia had includes the HDOH’s own disclosure that the BC#’s were routinely given by the HDOH on the “date filed” for Oahu births, and the long-form BC information (”date filed” and BC#’s) for the Nordyke twins.
So there's nothing conclusive, so the idea is still just in the "theory" category. It is just one more among many.
We just need more information.