Police in north China's Tianjin municipality have expropriated 600 Bitcoin mining computers after a local power grid reported faulty electricity consumption. (coinidol.com)
A cryptocurrency mining computer equipped with four cooling fans is seen on display at a computer mall in Hong Kong, January 29, 2018. (cnbc.com)
Every ten minutes or so mining computers collect a few hundred pending bitcoin transactions (a «block») and turn them into a mathematical puzzle. (economist.com)