http://turkeyoe6akd6azkgkmj7rbuhmabrgdg63ez3mzfhsjf6cnnbxthqrqd.onion/proof-before-payment.html
Upon receiving it, John forwards it to Elena as a certification and guarantee that he has already done the work. Upon receiving John's proof, Elena believes that John is a real hacker and that he has really done the requested service, then she decides to make the payment under the promise that John would send her the password after receiving such payment, but this will never happen.