Project Musubi: The Japan-Korea Stablecoin Rail That Cuts the Dollar Out of Asia's Busiest Trade Corridor

The project targets the roughly $75 billion annual trade corridor between Japan and South Korea, aiming to replace the slow, dollar-intermediated correspondent banking system with atomic, same-currency settlement using yen, won, and dollar-denominated stablecoins .

How the Canton Network Delivers Atomic PvP Settlement

Canton is a public, permissioned blockchain designed for institutional finance. It does not have a native stablecoin — instead, institutions bring their own tokenized money onto the network . Settlement is atomic: both legs of a transaction settle simultaneously in a single, cryptographically guaranteed step, eliminating counterparty risk entirely .

For Project Musubi, the payment-versus-payment (PvP) flow works as follows:

• A Japanese importer and a Korean exporter agree on a cross-border trade.
• The Japanese party transfers JPYSC (SBI's yen stablecoin, issued by SBI Shinsei Trust Bank and classified as an electronic payment instrument under Japan's Payment Services Act) into a Canton-based smart contract .
• The Korean party deposits a KRW-denominated stablecoin or a USD-denominated stablecoin (e.g., USDCx on Canton) into the same contract .
• Canton's Daml-based smart contracts execute the atomic swap: both stablecoin legs are released to the counterparties simultaneously, achieving PvP settlement in seconds rather than the 1–2 days typical of correspondent banking .
• The network provides "need-to-know" privacy — transaction details are visible only to the parties involved, even though the underlying blockchain is public .

The long-term intent is to bypass the dollar as an intermediary entirely, allowing direct JPY↔KRW settlement and reducing FX costs for the trade corridor .

The Roles of Each Partner

Both partners intend to expand beyond Japan–Korea to other Asian trade corridors once the network is proven .

Regulatory Hurdles: Japan Has a Framework; South Korea Is Still Building One

Japan: Clear Rules, but Cross-Border Complexity

Japan has a functioning stablecoin framework. Under amendments to the Payment Services Act (PSA) that took effect June 1, 2026, fiat-backed stablecoins are classified as Electronic Payment Instruments (EPIs) . Issuance is restricted to banks, trust companies, and registered fund transfer service providers. JPYSC already operates under this framework .

However, cross-border stablecoin flows involving foreign-issued EPIs — such as a KRW stablecoin entering Japan — face additional requirements under the Electronic Payment Instruments Exchange Service Provider (EPIESP) regime, which mandates client asset segregation and specific reserve rules . A further reform package moving crypto-asset oversight from the PSA to the Financial Instruments and Exchange Act received Diet approval on July 15, 2026, adding transitional uncertainty as secondary ordinances are drafted through fiscal 2027 .

South Korea: Racing to Finalize a Won-Stablecoin Law

South Korea does not yet have a finalized stablecoin framework. The government is actively developing one:

• On July 29, 2026, the Financial Services Commission (FSC) announced it will prepare a government-backed Digital Asset Basic Act (DABA) that consolidates 10 separate crypto and stablecoin bills into a single law . The government aims to pass it by end of 2026 .
• The bill will categorize stablecoins, set reserve and custody standards, and require foreign-issued stablecoins to establish a local branch in Korea .
• Until the law passes, there is no legal basis for a won-denominated stablecoin — a key gap for Project Musubi. A KRW-pegged token (KRW1) has been piloted, but full institutionalization awaits legislation .

Bottom line: Japan has an operational stablecoin framework; South Korea is racing to finalize one. Project Musubi can proceed with JPYSC and USD stablecoins immediately, but won-denominated settlement requires the Digital Asset Basic Act to become law.

Broader Context: A Wave of Institutional Stablecoin Initiatives

Project Musubi is part of a wider surge of institutional stablecoin cross-border initiatives:

• ClearToken (UK): On August 3, 2026, ClearToken launched three Daml-based Digital Asset Platforms (CT Register, CT Pay, CT Settle) on Canton, delivering FMI-grade settlement infrastructure for PvP FX settlement across stablecoins, fiat currencies, and tokenized deposits .
• USDCx on Canton: Circle deployed USDCx on Canton in December 2025, enabling institutional-grade private USDC-backed settlement with cross-application composability .
• SBI + Solana Global: On July 13, 2026, SBI partnered with the Solana Foundation to build Japan's first on-chain financial market, with JPYSC issuance and tokenized real-world assets as core use cases . SBI is pursuing multiple blockchain strategies (Canton, Solana, Ethereum) simultaneously .
• mBridge (BIS/Bank of China/HKMA/Thai CB): A multi-CBDC cross-border platform for wholesale payments, now in its minimum viable product stage.
• SWIFT's blockchain experiments: SWIFT has been testing tokenized asset and CBDC interlinking, though at an earlier stage.
• Regulated stablecoin FX platforms: Multiple initiatives (e.g., Fnality, JPM Coin, Visa B2B Connect) are targeting bank-grade settlement, but most are single-currency or single-ledger; Canton's cross-application composability is a distinguishing feature .

Project Musubi stands out for its bilateral, private-sector-led design that directly targets a major real-economy trade corridor and intentionally disintermediates the US dollar — a strategic choice with geopolitical and FX-efficiency implications for Asia .