Tldr: I built a superminer in 2013 for a client. If he would have paid me in bitcoin, then those bitcoins would have been stolen by now. Bitcoin mining uses way

Tldr: I built a superminer in 2013 for a client. If he would have paid me in bitcoin, then those bitcoins would have been stolen by now. Bitcoin mining uses way too much electricity, now it is 35 terawatt hours at this rate: 2019 > USA,2020 > World