Again, all that is just claims. Saying you are someone doesn't prove much.
Want to prove exwmzcom is the owner of vncex.com? Off the top of my head a method I can think of would be to create vncex.com/exwmzcom_proof.txt

Also linking to posts from another forum doesn't prove much here.
You'd have to transact with members of the bitcointalk community to earn trust in bitcointalk.org.