This might an insightful link:
The Birth Certificate.
The thing so many people seem to dodge around the the significance of the name being on the register. Too much time has been spent on the certificate itself rather than getting to the heart of the significance of the entry in the register. Back in the day when someone requested a birth certificate, the register was checked for the name and DOB and if an entry was found a CERTIFICATE WAS MADE THAT THE ENTRY EXISTS.
What is the significance of the name being in the register?