Wavebridge said it completed a proof-of-concept with BC Card that connected overseas blockchain wallets to South Korea's card payment infrastructure, verifying the settlement path from stablecoin custody through conversion into won before merchant payout. In the test environment, a foreign visitor used USDC held in a Base-network wallet at a domestic BC Card QR merchant, while the merchant settled in Korean won through the existing card process. The companies said the pilot also linked BC Card's cancellation and settlement process with Wavebridge's on-chain asset return structure, allowing stablecoins to be returned to the user's wallet when a payment was canceled or failed despite blockchain's usual irreversibility. Wavebridge said the project ran on the Base testnet and pre-production environments to comply with the current regulatory framework, with BC Card providing payment rails and QR functions and Wavebridge handling blockchain-based settlement and fiat conversion technology. The company said commercialization would require further performance testing in production blockchain environments and an on- and off-chain risk-management framework aligned with regulatory requirements. The project comes as inbound travel to South Korea rises, with the Korea Tourism Organization reporting a record 18.94 million foreign visitors in 2025, and points to a model in which visitors could pay from overseas wallets without separate currency exchange while merchants keep existing terminals and settle in won.