BTQ Technologies has been selected as the post-quantum security partner for MoonPay Korea’s planned won-backed stablecoin infrastructure, the companies said on Oct. 12, 2026. The arrangement focuses on developing a cryptographic security roadmap and running a proof of concept with Korean banking institutions using BTQ’s Quantum Secure Stablecoin Network, or QSSN.
The partnership places BTQ inside a broader effort to connect Korean won stablecoins to banking infrastructure, digital wallets, merchant payments and cross-border settlement. However, the agreement covers planned security development and testing rather than a completed commercial deployment across MoonPay’s international network.
MoonPay Korea is developing infrastructure intended to support issuance, distribution, wallet access, settlement, currency conversion and merchant delivery. BTQ will start with a cryptographic inventory and risk prioritization exercise, then test transaction signing and key-management technology. The goal is to design migration capabilities before widespread adoption, reducing future costs associated with replacing cryptographic systems after financial infrastructure reaches scale.
Many blockchain networks and financial systems rely on public-key cryptography to verify signatures and establish transaction authority. Schemes based on elliptic curves and RSA are considered vulnerable in principle to sufficiently capable quantum computers. Post-quantum cryptography aims to replace or supplement those mechanisms with algorithms designed to resist known quantum attacks. Standardized options include ML-DSA and SLH-DSA, though blockchain compatibility remains a key constraint.
The companies plan to conduct a proof of concept with Korean banking institutions through MoonPay Korea, examining quantum-resistant transaction signing and key management across wallet and settlement infrastructure. The announcement did not identify every bank expected to participate, provide a deployment schedule, or disclose financial terms.
MoonPay Korea’s broader strategy involves connections to established Korean financial institutions. FinanceFeeds previously reported relationships with Woori Bank, KB Financial Group and KakaoBank covering potential stablecoin issuance, payment infrastructure, wallets and cross-border transactions. Woori Bank is identified as the inaugural member of MoonPay Korea’s KRW Stablecoin Consortium. MoonPay reports more than 35 million customers across approximately 180 countries and relationships with more than 1,500 enterprise clients, but those figures describe the parent company’s broader business rather than current users of Korean won stablecoins or BTQ-secured infrastructure.
South Korea’s won-backed stablecoin market remains dependent on regulatory development, including requirements around issuers, reserves, redemption rights, supervision and access to payment infrastructure. Technical security alone cannot establish whether a stablecoin may be legally issued or distributed.
BTQ has previously worked with Finger and iM Bank on a Korean won stablecoin proof of concept using the Kaia mainnet and has an agreement with LINE NEXT and the Kaia DLT Foundation concerning deployment of QSSN technology across the Kaia ecosystem. Investors should distinguish technical validation and market access from realized revenue, as the MoonPay Korea announcement does not disclose contract revenue, implementation fees, recurring licensing arrangements or minimum purchase commitments. The next milestones will be the banking proof-of-concept results, the migration roadmap and evidence of production deployment.
