Abra, which provides cryptocurrency trading, yield earning and borrowing services, will offer its customers the Abra Crypto Card on the American Express network. Amex will not issue the card, which will be the first to offer cryptocurrency as a reward for purchases made on the American Express global payment network. The Abra Crypto Card is expected to be available later this year. Amex Ventures, the strategic investment group of American Express, has participated in all of Abra’s funding rounds since 2015. In addition, Amex Ventures provided a $4-million convertible note to Abra in 2019....