Japan's three megabanks — MUFG, Mizuho and SMBC — have set up a consortium to jointly issue a stablecoin.
What stands out is that the banks are not each minting a coin of their own. They are issuing one shared stablecoin, together.
The three have established a consortium whose job is to build the operating framework for that joint issuance.
The whole structure hinges on a single trust
The three banks come in as joint settlors, and a trust bank takes the role of trustee.
It started as a pilot in late 2025 — a test of whether joint issuance by multiple banks can clear regulatory and operational compliance in a legally sound, appropriate way.
The work sits under Japan's Financial Services Agency (FSA) payment innovation project, with joint issuance targeted for fiscal 2026 (through March 2027).
The point is the alliance, not each bank on its own
Two things can both be called a bank stablecoin and still be built completely differently.
In the individual model, each bank mints its own coin on a shared platform. In this Japanese case, three banks enter a single trust as joint settlors and issue one coin between them.
The issuance platform already exists — so why build a consortium too?
Japan already has the issuing infrastructure needed to mint a bank stablecoin. And yet a new consortium was created anyway. There is a reason for that.
In joint issuance, the hard part is not how you mint. It is how several banks run one thing together.
Who manages the reserves, and how? How are redemption and liability for incidents divided up? Who controls the shared issuance rules, the controls, the audits? An issuance platform does not answer that governance layer for you.
What PARAMETA sees here
Issuance is only the entrance. When multiple parties operate a single asset together, the difficulty climbs in authentication, reserves, settlement, audit, and accountability governance.
PARAMETA is focused on that post-issuance layer of operations and control — stablecoin infrastructure, wallets, on-chain compliance, DID, on-chain KYC.
Across digital finance and public trust infrastructure, this operational trust structure is what PARAMETA keeps its eye on.
From a Korean institution's point of view
In Korea too, the conversation among banks and fintechs about stablecoins is accelerating. The more that joint or consortium issuance comes up, the more the question shifts from who issues it to how joint operation and accountability get designed.
Institutions need to look not only at whether issuance is possible, but at reserve, redemption, control, and audit governance alongside it. We will keep watching where this goes.
Stablecoin operations and governance infrastructure needed
Reference
Coverage of the joint stablecoin consortium formed by Japan's three megabanks
(Decrypt and others, 2026-06) · original article
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