Employees work on bitcoin mining computers at Bitminer Factory in Florence, Italy, April 6, 2018. Show moreShow less
Employees work on bitcoin mining computers at Bitminer Factory in Florence, Italy, April 6, 2018. Show moreShow less
Chain of block erupters used for Bitcoin mining is pictured in Bitminer Factory in Florence, Italy, April 6, 2018. Show moreShow less
An employee works on bitcoin mining computers at Bitminer Factory in Florence, Italy, April 6, 2018. Reuters/Alessandro Bianchi Show moreShow less
An employee works on bitcoin mining computers at Bitminer Factory in Florence, Italy, April 6, 2018. Image used for illustrative purposeShow moreShow less
Bitcoin mining computer servers are seen in Bitminer Factory in Florence, Italy, April 6, 2018. Show moreShow less
Cables plugged into a Bitcoin mining computer server are pictured in Bitminer Factory in Florence, Italy, April 6, 2018. Show moreShow less
Employees work on bitcoin mining computers at Bitminer Factory in Florence, Italy, April 6, 2018. Show moreShow less
An employee works on a bitcoin mining computer at Bitminer Factory in Florence, Italy, April 6, 2018. Show moreShow less
LAN network cables plugged into a Bitcoin mining computer server are pictured in Bitminer Factory in Florence, Italy, April 6, 2018. REUTERS/Alessandro Bianchi Show moreShow less