Coinspeaker Fidel Payment API Provider Has Raised $18M to Let Developers Build ‘Card-linked’ AppsFidel has received funding that it hopes to use in the expansion of its services to other countries. The startup which is in partnership with major card companies, such as Visa and MasterCard, offers developers easy access to the card networks.Fidel Payment API Provider Has Raised $18M to Let Developers Build ‘Card-linked’ Apps