[Poggio]

Honestly in my mind, if you are going through a self renaissance the document in itself should be valid. You are basically starting life in the direction of your own choosing. As a birth certificate, it is already a legal document. Your doctors, psychologist, can probably validate it that you are of sound mind and body, that you are X person.

At least that is the way my brain processes that idea. Legally its a birth certificate, just not created at the time of birth, just when you are recognized as true gender identity. I don't expect it to be as easy as changing ones name, but it would be something better than nothing.