What happened
- Specific facts/numbers: SMBC, Mizuho Bank, MUFG Bank, Mitsubishi UFJ Trust and Banking, and TISI said they ran the proof of concept from July 17 to July 23, 2026, and announced its completion on October 16, 2026.
- Institutions involved: The participants were Sumitomo Mitsui Banking Corporation, Mizuho Bank, MUFG Bank, Mitsubishi UFJ Trust and Banking Corporation, and TISI Inc.; Japan’s Financial Services Agency had previously supported the initiative through its FinTech PoC Hub.
- Regulatory/technical context: The test covered joint stablecoin issuance and more advanced cross-border payments, building on an initiative approved in November 2025 under the FSA’s FinTech PoC Hub and following Japan’s framework that recognizes stablecoins as electronic payment instruments.
- What to watch next: The banks had already said in June 2026 that they aim to start real transactions using the jointly issued stablecoin during fiscal 2026; beyond that, no additional next milestone was identified.
Why it matters
The project suggests Japan’s largest banks are moving from concept testing toward operational cross-border settlement using a jointly issued stablecoin, which could lower frictions for corporate treasury and wholesale payments.
HKMA Relevance
Indirect: A concrete stablecoin and cross-border payments initiative by major Japanese banks could shape competitive and interoperability expectations for Hong Kong banks, but no HKMA action is involved in this story.