Locations of Bitcoin ATM in United States The easiest way to buy and sell bitcoins..Want to buy bitcoins? Use our map to find your nearest bitcoin ATM worldwide and read up on the latest ATM locations, innovations and manufacturers.. A Bitcoin ATM is a machine that allows people to buy Bitcoins with hard cash. Some machines allow selling of Bitcoins for money, but these kind of machines are often hard to come by. On , Waves Coffee Shop in Vancouver, Canada, opened the world’s first Bitcoin exchange machine..Bitcoin Mining Hardware Guide The best Bitcoin mining hardware has evolved dramatically since . At first, miners used their central processing unit CPU to mine, but soon this wasn’t fast enough and it bogged down the system resources of the host computer. Miners quickly moved on to using the graphical processing unit GPU in computer graphics cards because they were able to hash data .