Guy wants you to show the URL of account before even making an offer. He's looking to negative rep them all. DO NOT DEAL WITH. His idea of proving funds is showing a block chain address...
SCAMMER
No, I'm not looking to negative rep them. I asked to see one of the "many" accounts you had for sale and you wouldnt show me one.
I offered to show you my Blockchain account with 60,000$ in it to show I have the funds to pay.