31 December 2018 Monday. 12:22:17 UTC
This is obviously the biggest nonsense, paying with Bitcoin is anonymous so the scam mer 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.
Plaintext email with demand for 1061 dollars in bitcoin, non-specific threats about my allegedly dirty online habits and claims to have installed malware on my computer. I googled the sentence "You entered your pwd on one of the sites you visited, and I intercepted that" from the email and your site came up.