NEW YORK--(BUSINESS WIRE)--Global bitcoin exchange itBit today announced it is available to all U.S. retail and institutional bitcoin traders and will begin accepting U.S. customers immediately. Through a trust company charter, granted by the New York State Department of Financial Services (NYDFS), itBit has established the itBit Trust Company, organized under New York State banking law. This makes itBit the only U.S.-chartered and supervised bitcoin exchange able to offer unique protection and