How are most banks going to be verifying identities?
It's too early for anyone to claim he or she knows what "most" banks are going to do. The preamble to the CDD regulation indicates banks can use photocopies of identification. The preamble to the CIP regulation indicated banks are not required to verify all four pieces of information, just enough to establish a reasonable belief of the customer's identity.
There is no way to legally verify the name/TIN combination of a beneficial owner, but there is probably no need to either. Don't make this harder than it needs to be. Go with a photocopy of the identification and be done with it.