Fold said Tuesday it will launch a Visa credit card powered by Stripe Issuing that pays bitcoin rewards on every purchase, a move that sent its shares soaring in pre-market trading before they fell after the open.The Nasdaq-listed company (ticker: FLD) said the card will provide up to 3.5% back on spending, including 2% unlimited instantly and an additional 1.5% for customers who pay balances from a Fold checking account with qualifying activity. It will also feature brand offers of as much as 10% back acro ...