Summary
South Korea's K-STAR consortium and BNK Busan Bank completed a proof of concept for a blockchain-based digital local currency on the Kaia blockchain, processing payments and settlements in under one second with a 100% transaction success rate. The PoC covered the complete payment cycle — issuance, wallet top-ups, customer payments, and merchant settlements — and implemented "programmable money" with policy conditions such as spending restrictions to approved merchants, automatic expiration of unused balances, and different settlement rules by merchant category.
Key Facts
- Consortium: BNK Busan Bank, AhnLab Blockchain Company, OpenAsset, Kaia, Lambda256
- Performance: sub-1-second settlement, 100% success rate under normal, congestion, max load, and 24-hour continuous testing
- Programmable money features: merchant-restricted spending, auto-expiry, category-based settlement rules
- Won stablecoin-based policy local currency model reflecting current local currency operating structure
- Follows KB Financial Group's won stablecoin PoC (May 2026) and Shinhan Card's Solana stablecoin pilot (April 2026)
- President Lee Jae-myung pledged (June 29) to allow companies to issue won-backed stablecoins
- Potential applications: government subsidies, digital vouchers, CBDC services, cross-border settlement
Why It Matters
South Korea is rapidly advancing its won-denominated stablecoin infrastructure through multiple parallel pilots. The K-STAR PoC demonstrates that programmable money — not just simple token transfers — is feasible in a real banking environment. With President Lee's pledge to allow corporate stablecoin issuance and the Digital Asset Basic Act framework developing, South Korea is positioning as a leading testbed for regulated stablecoin innovation. The Kaia blockchain's role (Kakao's L1) ties this to the broader Kakao ecosystem.