Marcus@tokenchat.com email. Full text: " There is the bomb (Tetryl) in the building where your company is located. It was built under my direction. It can be hidden anywhere because of its small size, it is impossible to damage the structure of the building by my bomb, but you will get many wounded people in case of its explosion.
My recruited person keeps the building under the control. If any suspicious behavioror emergency is noticed he will blow up the bomb.
I would like to propose you a bargain. 20'000 usd is the price for your safety. Tansfer it to me in Bitcoin and I ensure that I will withdraw my mercenary and the bomb will not explode. But do not try to cheat- my warranty will become actual only after 3 confirmations in blockchain network.

Here is my Bitcoin address : 1LTYBLzVSLe6GDFJ5NVVxLR2j5eQ8Wy51N

You must solve problems with the transaction by the end of the working day, if you are late with the money the device will explode.
This is just a business, if I do not see the money and a bomb detonates, next time other commercial enterprises will send me a lot more, because this isnt an isolated incident.
For security and anonymity reasons, I will no longer log into this email. I monitor my Bitcoin wallet every twenty min and after seeing the bitcoins I will order my man to leave your area.

If an explosion occurred and the authorities read this letter!
We are not the terrorist organization and dont take any liability for explosions in other buildings."