FILE: An employee uses a smartphone as he demonstrates how to purchase bitcoins from a bitcoin automated teller machine (ATM) at the Coin Trader bitcoin retail store in Tokyo, Japan, on Wednesday, Aug. 30, 2017. Bitcoin is showing no signs of slowing down, the price of the largest cryptocurrency by market value is soaring as it gains greater mainstream attention despite warnings of a bubble in what not everyone agrees is an asset. Our editors select the best archive images on Bitcoin. Photographer: Tomohiro Ohsumi/Bloomberg via Getty Images