Japan Weighs 24/7 Blockchain Settlement for Stocks and Bonds

Japan is preparing to study a blockchain settlement system capable of processing stock and government bond transactions around the clock, according to an August 26, 2026 report from Nikkei.

The move could shorten how long investors wait to access money from a trade. Japanese stock transactions currently settle two business days after the trade date, while Japanese government bond (JGB) trades generally settle the next business day. A blockchain-based system would tie the transfer of securities more closely to the cash payment, letting investors reach sale proceeds faster and potentially reinvest them almost immediately, echoing how stablecoins already move money across borders outside standard banking hours on other blockchain rails.

A Study Group Could Form This Summer

The Financial Services Agency, the Ministry of Finance, the Bank of Japan (BOJ), and participating financial institutions are expected to form a study group during summer 2026, aiming to complete an initial development plan in early 2027. None of the three government institutions had published a formal announcement confirming the study group as of Wednesday, August 26. The Ministry of Finance and the BOJ have worked together on other market interventions recently, coordinating a joint yen-buying operation with the US Treasury in July after the currency touched a four-decade low.

The development plan is expected to cover the blockchain architecture, how responsibilities would split between public and private participants, and an implementation timetable. International remittances could become a further use case down the line. Nikkei reported the infrastructure could become operational in the early 2030s if the plan wins formal approval, though no final implementation decision has been made.

Faster settlement can shrink the window in which counterparties are exposed to each other, but it also shrinks the time market participants have to line up cash or securities, which creates new liquidity and operational demands. Around-the-clock operation would also require financial institutions and regulators to staff support beyond current market hours.

BOJ Is Already Testing Blockchain Settlement

The reported study builds on work the BOJ has already started. Governor Kazuo Ueda said in March 2026 that the central bank was testing settlement using commercial banks' current account deposits on blockchain infrastructure. The sandbox project examines how blockchain networks could connect with Japan's existing settlement systems, with domestic interbank transfers and securities settlement among the potential use cases.

BOJ Executive Director Kazushige Kamiyama later described the effort as a look at tokenized central bank account deposits, sometimes called wholesale central bank digital currency (CBDC). The design could support delivery-versus-payment settlement, where securities and cash move at the same time. This work is separate from Japan's retail digital yen pilot, on which the BOJ continues technical research without a decision yet on whether to issue one.

Private Tokenized Securities Networks Already Exist

Japan's private financial sector has moved faster than the government on blockchain-based securities. Progmat recently moved ¥452 billion in managed tokenized securities onto a dedicated network built on Avalanche. Separately, SBI Holdings and Startale are building Strium, a blockchain designed for round-the-clock tokenized securities trading, with a public test network planned for later in 2026.

Those systems demonstrate issuance and transfer of tokenized assets, but the government's proposal would be broader if it moves forward, since it could eventually touch the infrastructure behind mainstream Japanese stocks, government debt, and central bank money. The push mirrors a wider rise in tokenized real-world assets, a category where Solana recently overtook Ethereum in total holders, though Japan's effort would run on infrastructure the government and regulated institutions control directly. Separately, Japan's three largest banks are preparing a shared yen stablecoin framework, targeting live transactions by March 2027, following an FSA-supported corporate payment pilot.

The study group still needs to decide whether Japan builds a new blockchain, connects several regulated networks, or links distributed ledgers to its existing market systems. It will also need to work out governance, cybersecurity, transaction privacy, operational resilience, and how to reverse erroneous or unauthorized transfers. Until an official announcement names the participating institutions and the group's mandate, the early-2030s timeline remains a reported target rather than an approved government deadline.