Woman loses nearly $8,000 in Bitcoin phone scam: Guelph police

In this Dec. 21, 2017 file photo, a woman walks past the Bitcoin ATM in Hong Kong. The growth of bitcoin is fueling speculation about the environmental impact of the energy needed to power the cryptocurrency, stemming from the process of "mining," which is central to its existence. (AP / Kin Cheung, File) In this Dec. 21, 2017 file photo, a woman walks past the Bitcoin ATM in Hong Kong. The growth of bitcoin is fueling speculation about the environmental impact of the energy needed to power the cryptocurrency, stemming from the process of "mining," which is central to its existence. (AP / Kin Cheung, File)