Signage is seen outside of the US Commodity Futures Trading Commission (CFTC) in Washington, D.C., U.S., August 30, 2020. REUTERS/Andrew Kelly Register now for FREE unlimited access to Reuters.com WASHINGTON, June 30 (Reuters) – The U.S. commodities regulator announced on Thursday it had filed civil charges against a South African man and his company for operating a fradulent commodity pool worth over $1.7 billion in bitcoin. The Commodity Futures Trading Commission (CFTC) said the fraud scheme, which saw the firm solicit bitcoin online from thousands of people to purportedly operate a commodity pool, was the largest it had ever pursued […]