KB Kookmin Card, a subsidiary of South Korea's largest financial group, KB Financial, has filed a patent for a stablecoin payment system. The proposed technology integrates stablecoin payments with existing credit card infrastructure, allowing users to link their blockchain wallet to their credit card. Payments will first deduct from the stablecoin balance, with any shortfall covered by the credit card. This system aims to ease digital asset adoption by maintaining familiar card benefits and user experience, potentially bringing stablecoins into mainstream finance.