Mastercard has launched a crypto-to-fiat card with Web3/blockchain platform MetaMask and cryptocurrency payments firm Baanx.The MetaMask Card, announced Wednesday (Aug. 14), lets MetaMask wallet customers use crypto for everyday purchases in fiat currency wherever Mastercard is accepted. The card is being piloted on a limited basis — a few thousand digital-only cards — for users in European Union countries and the U.K.“Self-custodial wallet users have faced challenges when looking to spend funds outside the ...