Bitcoin hits all-time high as talk of U.S. ETF approval intensifies

By Gertrude Chavez-DreyfussNEW YORK (Reuters) - Digital currency bitcoin hit a record high on Friday on optimism about the approval of the first U.S. bitcoin exchange-traded fund by the Securities and Exchange Commission."There's one catalyst at the moment and that is the expectation that the Winklevoss Trust will be approved on the 11th of March.Investors Cameron and Tyler Winklevoss have a pending application with the SEC for a bitcoin ETF, which was filed nearly four years ago.