#MastercardStablecoinCards The alliance between Mastercard and MoonPay to launch payment cards with stablecoins, announced on May 15, 2025, is a significant step towards integrating cryptocurrencies into everyday transactions. Here is a detailed summary of what is known about this project:Key details of Mastercard's stablecoin card:Functioning:The cards, issued under the Mastercard brand, allow users to spend stablecoins (such as USDT from Tether) at over 150 million merchants worldwide where Mastercard is accepted.Users see their balances in stablecoins, but merchants receive payments in fiat currency (traditional money), which eliminates friction for merchants that do not accept crypto directly.The infrastructure uses Iron technology, an API platform for stablecoin transactions acquired by MoonPay in March 2025.