Cryptocurrency Extortion Email Body

There is the explosive device (Hexogen) in the building where your company is located. My recruited person constructed the bomb under my direction. It can be hidden anywhere because of its small size, it can not destroy the structure of the building, but in the case of its detonation there will be many victims.
My man keeps the territory under the control. If he notices any strange behavior, panic  or policemen the device will be exploded.
I can call off my mercenary if you make a transfer. $20'000 is the price for your safety and business. Tansfer it to me in BTC and I warrant that I will withdraw my mercenary and the bomb will not detonate. But do not try to deceive me- my assurance will become valid only after 3 confirms in blockchain network.

Here is my BTC address - bitcoin address removed

You have to solve problems with the payment by the end of the workday. If you are late with the transaction the bomb will explode.
Nothing personal, if you don’t send me the bitcoin and a bomb detonates, next time other companies will pay me more bitcoins, because it is not a one-time action.
For security and anonymity ,  I will no longer enter this email account. I check my Bitcoin address every 20 minutes and after receiving the transaction I will order my man to leave your area.

If an explosive device blows up and the authorities see this email-
We arent terrorists and do not assume any  responsibility for acts of terrorism in other places.