Non-custodial crypto wallet ThorWallet has launched a payment card that enables users to spend digital assets at millions of merchants through Mastercard’s payment network. The wallet integrates decentralized finance (DeFi) protocols to convert selected assets, including Bitcoin, Ethereum and Solana, into USDC only when a purchase is processed. This keeps the assets under users’ control until the final payment step and avoids requiring transfers to a centralized exchange or third-party custodian. The model may expose users to network fees, slippage and crypto-price volatility, while regulatory requirements such as anti-money laundering and know-your-customer rules could affect the product. ThorWallet has not fully disclosed geographic availability.