on march 24, 1992, vadym hetman was accepted as the chairman of the national bank of ukraine. he supervised early monetary reforms in newly independent ukraine through 1993, when he resigned from his position as the head of the supervisory board of the national bank. however, he maintained close ties with his successor, viktor yushchenko. hetman's signature appears on the original banknotes of ukraine's national currency, the hryvnia, which was introduced in september 1996.