By Dan Peleschuk KYIV (Reuters) – Ukrainian investigators suspect a lawmaker of trying to bribe the head of a government reconstruction agency in the country’s first-ever documented cryptocurrency kickback, authorities said on Tuesday. The National Anti-Corruption Bureau of Ukraine (NABU) said the lawmaker, a member of parliament’s anti-corruption committee, is believed to have offered the equivalent of $50,000 in bitcoin in exchange for state funds to rebuild infrastructure under his control. The bureau did not name the official, who was served by prosecutors with an official notice of suspic…