In Bonner, Montana, a small city in Missoula County, the Bitcoin company HyperBlock set up in 2016 and almost immediately began cutting into the community's supply of hydropower from the Salish-Kootenai Dam; County Commissioner Dave Strohmaier called the plant's energy use "grotesque" and equal to as much as crypto com midnight blue card one-third of the county's household demand. HyperBlock went bankrupt when Bitcoin plummeted at the start of the COVID pandemic. The county subsequently enacted a first-of-its-kind zoning ordinance requiring, among other things, that cryptominers supply their own, new renewable energy sources. With cryptocurrency, there is a risk that someone with Bitcoin could make a copy of that Bitcoin and send that to a merchant instead of the real thing. In the real world, the cashier looks at a £20 note to ensure it is not fake—and this is what Bitcoin miners are trying to do with cryptocurrency; they are checking to ensure that a transaction has not been made twice.