Though Fukino will never come right out and say it, we do know that the numbers were given in ascending order. It’s observable on the Nordyke certificates and on others. And the Vital Stats Reports also talk about it. I’ve got information about that on my blog.
Somebody could say it’s just conjecture that numbers are given in ascending order because Fukino will never come out and admit it. But circumstantial evidence like that is still evidence, and if we weren’t able to make conclusions from what we observe we wouldn’t be able to claim ANYTHING.
I believe this can be considered documentary evidence and not just circumstantial evidence, especially since the cert numbers are contained on documents that categorized are self-authenticating pieces of evidence.