Crypto exchange Coinbase (COIN) Global said Thursday that the firm has received conditional approval from a key federal regulator to become a national trust bank. Final approval from the Office of the Comptroller of the Currency (OCC) brings a new threshold of legitimacy to Coinbase in the eyes of certain clients, vice president of Institutional Product Greg Tusar said in an interview. Coinbase already carries a limited-purpose trust charter issued by the New York Department of Financial Services, whic ...