This is obviously the biggest nonsense, paying with Bitcoin is anonymous so the scammer cannot know who the money came from (there is no sender). The story as described in the mail is therefore incorrect and is not based on truths. This person sends out extorsion mails trying to convince people that he/she has infected computers with virus and recorded viewing of pornographic content. Trying to make us pay bitcoins in order not to reveal the recorded information. This is all fake, but a serious extorsion attempt