I believe the answer is no, but need confirmation. In the binary format of a PST is there some property which can help determine the ownership of the PST correctly ?
Ownership in what sense? Unlike POP3/SMTP, IMAP4/SMTP, Exchange, etc., accounts, a PST file does not have an intrinsic user identity, even though one or more email accounts can deliver messages there. Is that what you are after? In that case you need to start with a POP3/SMTP account and see where it delivers the messages to.