Japan is constructing a regulated yen stablecoin infrastructure along three parallel tracks simultaneously. JPYC, the first fund-transfer-licensed yen stablecoin, has reached 3.2 billion yen ($20.8 million) in circulation after one year. JPYSC, the first trust-bank-backed yen stablecoin issued by...
"The shift to onchain finance is becoming an unavoidable global trend." — Yoshitaka Kitao, Chairman and President, SBI Holdings
Japan is constructing a regulated yen stablecoin infrastructure along three parallel tracks simultaneously. JPYC, the first fund-transfer-licensed yen stablecoin, has reached 3.2 billion yen ($20.8 million) in circulation after one year. JPYSC, the first trust-bank-backed yen stablecoin issued by SBI Shinsei Trust Bank, has grown to approximately 20.7 billion yen ($131.5 million) since its June 24 launch. And Project Pax, a joint initiative by Japan's three megabanks — MUFG, SMBC, and Mizuho — targets one trillion yen ($6.5 billion) in business-to-business volume by 2028, with live corporate transactions planned by March 2027.
In the week of October 20-27, 2026, three separate announcements accelerated this buildout: BlackRock signed an MOU with SBI and Startale to explore linking tokenized money market funds to JPYSC; Shinhan Card of South Korea signed an agreement with SBI affiliates to test yen stablecoin cross-border payments; and Startale opened subscriptions for Japan's first digital corporate bond paying interest and principal in JPYSC at 5.0% annual yield. These are not abstract pilots. They represent concrete attempts to wire a programmable yen into cross-border payments, institutional fund distribution, and corporate debt markets.
Japan's 2022 Payment Services Act amendments established three categories of entities authorized to issue fiat-pegged, par-redeemable stablecoins, classified as electronic payment instruments (EPIs):
| Lane | Issuer Type | Example | Circulation (Oct 2026) | Transfer Limits | |------|-------------|---------|----------------------|-----------------| | 1 | Fund Transfer Service Provider | JPYC Inc. | ¥3.2B ($20.8M) | ¥1M per transfer | | 2 | Trust Bank | SBI Shinsei Trust Bank (JPYSC) | ¥20.7B ($131.5M) | No cap (trust structure) | | 3 | Licensed Bank | MUFG/SMBC/Mizuho (Project Pax) | Pre-launch | No cap |
The trust-bank model has a structural advantage: because a trust bank holds and manages backing assets in a bankruptcy-remote structure, JPYSC is exempt from the one million yen ($6,500) limit on transfers and balances that applies to fund-transfer-type stablecoins. This distinction matters for institutional use cases — a fund-transfer stablecoin cannot settle a $50,000 bond coupon payment.
Japan's stablecoin regulatory framework, enacted in June 2022 and progressively refined through 2026, operates on several key principles:
Reserve requirements. Trust stablecoin issuers may invest up to 50% of reserves in short-term Japanese government bonds, with the remainder in segregated yen deposits under Financial Services Agency (FSA) supervision. SBI moved one billion yen of JPYSC reserves into JGBs, according to reporting by CoinOtag.
Foreign stablecoin access. Effective June 1, 2026, an updated Cabinet Office Ordinance formally allows qualifying foreign trust-type stablecoins to operate as EPIs in Japan. This opens the door for USDC and potentially other dollar stablecoins to circulate under Japanese regulation.
Compliance infrastructure. All EPIs must support know-your-customer verification, clawback functionality, and sanctions compliance at the token level — requirements that effectively mandate permissioned or semi-permissioned chain architectures.
Dedicated oversight. In August 2026, the FSA established a dedicated stablecoin supervision division, signaling that the regulator treats this as a permanent infrastructure category, not a temporary experiment.
JPYSC launched on June 24, 2026, as a joint product of SBI Holdings and Startale Group, with SBI Shinsei Trust Bank serving as issuer and SBI VC Trade as the sole distributor. It raised approximately $70 million on its first day of issuance, according to CoinDesk reporting.
By October 26, 2026, circulating supply had reached 20.7 billion tokens (approximately $131.5 million), representing roughly 87% growth over four months. For context, JPYC — which launched a year earlier — sits at 3.2 billion yen ($20.8 million), roughly one-sixth of JPYSC's circulation despite a twelve-month head start.
The gap is partly structural. JPYSC's trust-bank backing removes the one million yen transfer cap, making it usable for institutional settlements. It is also partly distribution-driven: SBI Holdings, Japan's largest online brokerage, channels JPYSC through its existing customer base.
Current limitations. JPYSC remains confined to SBI VC Trade accounts. External wallet withdrawals are disabled. Circulation on public blockchains depends on pending legal and tax clarifications. This closed-loop model limits composability — JPYSC cannot yet flow through DeFi protocols or third-party wallets.
On October 27, 2026, SBI Holdings and Startale announced a memorandum of understanding with BlackRock Financial Management and BlackRock Japan to explore linking tokenized money market funds with JPYSC.
BlackRock's BUIDL fund — a tokenized vehicle holding U.S. Treasuries, overnight repos, and cash — has surpassed $2 billion in assets under management. The MOU examines whether BUIDL shares or similar tokenized instruments could be denominated, distributed, or settled in yen via JPYSC.
According to Yukiko Hashimoto, President of BlackRock Japan: "At BlackRock, we believe these innovations can help advance financial markets and deliver new value to investors in Japan."
The MOU covers three work streams: technology and infrastructure, business and distribution, and regulation and market development. SBI's release does not name a specific BlackRock fund, a blockchain, or a timeline — it is exploratory.
Still, the pairing matters economically. Japan's household financial assets total approximately $17 trillion, the third largest pool globally. Connecting a tokenized dollar money market fund to a regulated yen stablecoin would create a programmable on-ramp from yen savings into dollar-denominated yield — a flow that currently requires multiple intermediaries and settlement delays.
Startale CEO Sota Watanabe described the JPYSC-tokenized MMF connection as "an important step toward building the foundations of onchain finance."
On October 20, 2026, South Korea's Shinhan Card signed an agreement with SBI VC Trade and SBI XDC Network APAC to test yen stablecoin payments for cross-border use. According to CoinDesk, the agreement was signed in Tokyo.
The pilot explores whether Japanese visitors to South Korea can use JPYSC for card-linked purchases via QR code, alongside wallet transfers and trade payment settlement. QR payment verification is targeted for completion by December 2026.
The economic context: over 10 million visits occurred between Japan and South Korea in the first half of 2026. Shinhan Card serves approximately 20 million cardholders. Current cross-border card payments between the two countries involve multiple intermediaries, currency conversion spreads, and settlement delays of one to three business days.
A stablecoin-based settlement rail could compress this to near-real-time, eliminating the correspondent-banking chain. However, the pilot remains early-stage — no commercial timeline has been announced, and regulatory clearance from both Japanese and Korean financial authorities is required.
On October 6, 2026, Startale Japan opened subscriptions for what it described as Japan's first digital corporate bond with interest and principal payments made in JPYSC. Key terms:
Holders receive cash flows as JPYSC inside the Startale App rather than through conventional bank transfer. Singapore-based Startale Group Pte. Ltd. guarantees principal, interest, and any delayed payments.
The issuance size is small — effectively a proof of concept. Its significance lies in establishing the mechanical precedent: a regulated yen stablecoin serving as both the settlement currency and the payment rail for a structured debt instrument. If the mechanics work, the model scales to larger corporate issuances on the same infrastructure.
Japan's three largest banks — MUFG (Mitsubishi UFJ), SMBC (Sumitomo Mitsui), and Mizuho — signed an MOU on June 10, 2026, to issue a joint yen stablecoin under Project Pax. The stablecoin will be issued under a trust agreement, with the three banks as joint settlors and a trust bank or similar institution serving as trustee.
Key parameters:
If Project Pax reaches its trillion-yen target, it would instantly become one of the top ten stablecoins globally by circulation. The B2B focus distinguishes it from JPYSC's current consumer orientation — Project Pax is designed for corporate treasury operations, supply chain payments, and interbank settlement.
The three megabanks collectively hold approximately ¥800 trillion ($5.2 trillion) in deposits. Even a fractional migration of corporate treasury balances onto stablecoin rails would generate significant on-chain settlement volume.
Progmat, the tokenization platform developed by MUFG affiliate Progmat Inc., serves as the shared infrastructure layer across multiple Japanese stablecoin and tokenized asset initiatives.
In February 2026, Progmat announced the migration of its entire platform from R3 Corda to an Avalanche Layer 1 — moving more than ¥439.6 billion ($2.86 billion) in tokenized real estate and corporate bonds to a public EVM-compatible chain by end of June 2026.
In May 2026, Progmat established a Tokenized Government Bonds and On-Chain Repo Working Group, bringing together more than 40 institutions including BlackRock Japan. The group is studying tokenized JGBs and stablecoins for same-day repo settlement, with commercial launch targeted before year-end 2026.
This layer is where the economic value concentrates. Whoever operates the issuance, custody, and settlement rails for yen stablecoins and tokenized assets captures the infrastructure margin — analogous to the role of DTCC or Euroclear in traditional markets, but programmable and potentially operating 24/7.
Fragmentation risk. Three stablecoin lanes operating on different blockchains (Strium, Avalanche L1, Ethereum/Polygon) with different compliance frameworks risk siloing domestic liquidity. Startale CEO Watanabe has publicly warned that Japan "must connect competing yen stablecoins or risk fragmentation."
Closed-loop constraints. JPYSC cannot currently leave SBI VC Trade accounts. Until external wallet support is enabled, the stablecoin functions more like an internal ledger entry than a programmable money instrument. DeFi composability — the feature that drives dollar stablecoin utility — remains unavailable.
Adoption gap. Combined yen stablecoin circulation (JPYC + JPYSC) stands at approximately ¥23.9 billion ($155 million). For comparison, USDC circulates at approximately $36 billion and USDT at approximately $138 billion. Japan's yen stablecoin market is roughly 0.09% of the dollar stablecoin market. The infrastructure is ahead of the demand.
Regulatory execution risk. Foreign stablecoin entry rules took effect June 1, 2026, but no major foreign issuer has completed the licensing process. If USDC or USDT gain Japanese circulation before domestic stablecoins achieve critical mass, the competitive dynamics shift substantially.
Japan's stablecoin buildout is the most structurally organized national effort to create regulated on-chain payment infrastructure. Three issuer types, each governed by distinct reserve and compliance rules, are building simultaneously rather than sequentially. The architecture is designed to serve different market segments: retail (JPYC), institutional (JPYSC), and corporate/interbank (Project Pax).
The October 2026 announcements — BlackRock's tokenized fund MOU, Shinhan Card's cross-border pilot, and Startale's digital bond — represent the first attempts to build actual products on this regulatory foundation. The issuance volumes are small. The timelines are uncertain. The closed-loop constraints are real.
What distinguishes Japan's approach from other jurisdictions is the explicit industrial policy: the FSA created a dedicated stablecoin division, approved the megabank pilot, opened the framework to foreign stablecoins, and is now studying on-chain government bond repos. The regulator is not merely permitting stablecoins — it is engineering a market structure.
Whether this produces a functional programmable yen that competes with dollar stablecoin hegemony or fragments into incompatible walled gardens depends on interoperability decisions that have not yet been made. The infrastructure is being laid. The connections between the lanes are not.