Looking to trade $2000 WU for BTC must show proof before I send the WU
As an FYI to anyone considering trading with this person, you can prove that you control
BTC by
signing a message with a private key that controls a bitcoin address that "contains" sufficient bitcoin you are selling. However a better way to prove you control sufficient
BTC to cover the trade is to send it to a trusted escrow who will hold the
BTC until you receive the WU funds.
If/when the OP asks for a picture of a paper wallet that contains the
BTC you are selling then he is trying to steal your bitcoin.