show us a signed messege 
and someone please leave trust red in this pp4 guy!!
My coins are under escrow with a trade at localbitcoins. Therefore it would be impossible to sign a message with the coins attached to an address. I am in process of selling them. WHen i get more ill easily sign anaddress and someone please leave trust red in this pp4 guy!!Sign a message from the address you sold it from we can follow the address and verify if it ever had 5BTC.
You cannot sign LocalBitcoins addresses everybody knows that. Btw if that doesn't help you here is my trade
http://imgur.com/mh6b2sQ
So thank you for being curious about a trade that's already done ;-)
It's obvious you're just beating around the bush and avoiding providing any proof whatsoever.
Sign the Address of yours that ever had 5BTC and we'll be able to verify that it ever had that balance. The address you used to have the balance on.