Japan is preparing to study a blockchain settlement system for stocks and government bonds. The idea is to process trades around the clock, instead of waiting days for cash to move. Nikkei reported on Aug. 26 that the Financial Services Agency, the Ministry of Finance, the Bank of Japan and financial institutions could form a study group in summer 2026. The group would aim to finish an initial development plan by early 2027.
None of the three institutions had published an official announcement when checked Wednesday. So this remains a reported plan, not a confirmed government decision. Still, the direction is clear enough.
Why settle faster?
Japanese stock transactions now settle on a T+2 basis. That means cash changes hands two business days after a trade. Japanese government bonds usually settle the next business day. A blockchain-based system could connect the securities transfer with the cash payment more directly, so investors might get sale proceeds sooner and perhaps reinvest them almost immediately.
But real-time settlement has a downside. It shortens the window in which counterparties are exposed to each other, which is good. Yet it also cuts the time market participants have to line up cash or securities. That creates new liquidity and operational pressures. It is not a simple upgrade.
The Bank of Japan is already testing
The reported initiative builds on separate BOJ work. Governor Kazuo Ueda said in March that the central bank was testing settlements using commercial bank current account deposits on blockchain. Executive Director Kazushige Kamiyama later described it as an exploration of tokenized central-bank account deposits, sometimes called wholesale CBDC. The design might support delivery-versus-payment settlement, where securities and cash move together.
This is separate from the retail digital-yen pilot. The BOJ continues technical research there, but the government has not decided whether to issue one.
Private networks are moving ahead
Japan’s private sector is not waiting. Progmat moved about 452 billion yen in managed tokenized securities to a dedicated Avalanche network. SBI Holdings and Startale are building Strium, a blockchain for 24/7 tokenized securities trading, with a public test network planned for 2026. The three largest banks are also working on a shared yen stablecoin framework, targeting live transactions by March 2027.
These private systems show that tokenized assets can be issued and transferred. The government proposal is broader because it could touch the core infrastructure for mainstream stocks, national debt and central-bank money.
What the study must decide
The study group, if formed, will have to decide whether Japan builds a new blockchain, connects several regulated networks, or links distributed ledgers with existing systems. It also has to deal with governance, cybersecurity, privacy, operational resilience, and how to reverse mistaken or unauthorized transfers. Around-the-clock service means financial institutions and regulators must maintain support well beyond normal market hours.
The next confirmed milestone would be an official announcement naming the participants and the group’s mandate. The early-2027 plan would clarify architecture, funding, testing stages and any legal changes. Until those documents appear, the timetable and the early-2030s launch should be treated as reported targets, not approved deadlines.
