Blackmail scam
Abuser: unknown
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. Hello, I am a spyware software developer. Your account has been hacked by me in the summer of 2018. I understand that it is hard to believe, but here is my evidence (I sent you this email from your account).
Netherlands, 2018-12-26 14:02:26