There are valid reasons for them not to share that publicly and still have a legit BC.
Not within the context that there are many other states where a certified B.C. could be secured by outside parties. What would he do then....?
Even McCain's Panamanian CoLB had registration number visible.
They need to provide an actual certification number, provided one was actually issued.
“What else would an Obama spokesman say....? There’s no additional proof from him either.”
You are raising questions that he should answer is the point.
Raising questions and then filling in the blanks with the conspiracy-theory-du-jour is just ... nutty. It’s spinning your wheels.