Cryptocurrency mining rigs operate in a cargo container at the Golden Fleece cryptocurrency mining company in Kutaisi, Georgia, on Monday, Jan. 22, 2018. Golden Fleece uses a cargo container with Chinese-built computers inside a dilapidated Soviet-era tractor factory to extract cryptocurrencies using low-cost electricity generated by water flowing from the nearby Caucasus Mountains. Photographer: Daro Sulakauri/Bloomberg
Cryptocurrency mining rigs. QuadrigaCX says it cannot access customers' cash after chief's unexpected death. Bloomberg

Crypto firm Quadriga's shutdown leaves client Dh1.5m out of pocket