I think Congress set the process for proving the genuineness as being the official seal on the document. Which a criminal HDOH would be more than willing to provide.
I’m not so sure the HI DOH is really willing to do this, otherwise Obama’s jpg and PDF would already have the official seal on them. Even if they did, it’s going to have to match the jpg or the PDF that Obama has already made public. If it doesn’t match, Obama is toast.