Behind the price fluctuations on the Tokyo Stock Exchange, Japanese regulators are planning a rewrite of the settlement system. According to reports from Nikkei and Reuters, the Financial Services Agency (FSA), Ministry of Finance (MOF), and the Bank of Japan (BOJ) are preparing to jointly build a blockchain-based payment and settlement infrastructure, which is not just a simple “speeding up” of the existing system, but rather aims to shift the settlement of stocks and Japanese government bonds from a delayed “T+X” model to almost instant on-chain settlement. According to the road map disclosed by the media, an inter-departmental research group is expected to launch in the summer of 2026, with a development plan and division of responsibilities to be determined as early as the beginning of 2027. The system is envisioned to be operational in the early 2030s, becoming a national-level core infrastructure. If this regulator-led on-chain settlement channel takes shape, the logic of capital occupation in securities trading, counterparty risk management methods, and the boundaries of compliance controls will be forcibly redefined, requiring participants in the Japanese capital market to reconstruct their business processes and regulatory relationships on the new technology stack.
The Three Regulatory Giants in the Same Frame: From Media Signals to National-Level Transformation
This time around, the planning involves not just a trial by a single clearing institution or bank, but rather the Financial Services Agency (FSA), Ministry of Finance (MOF), and Bank of Japan (BOJ) being explicitly named. Media reports indicate that the three institutions will jointly participate in an inter-departmental research group to discuss how to move the payment and settlement systems for stocks and Japanese government bonds onto the blockchain. For the Japanese market, this means that on-chain settlement has been directly pulled into the design meeting room of national-level financial infrastructure, becoming an object of rule rewriting by regulators. According to the currently disclosed timeline, the research group is expected to start in the summer of 2026, aiming to produce a development plan by early 2027 at the latest, laying the institutional and technical framework for a core settlement system to be operational in the early 2030s.
However, this script is still only at the media level. Neither the Financial Services Agency nor the Bank of Japan has published formal press releases or public speeches; the project’s authorization boundaries, the regulatory identities of participating institutions, and the system's positioning within the existing regulatory framework have not been written into any official texts. Currently visible is only the firsthand reporting from Nikkei and secondary reports from media such as Reuters, with crucial details yet to be resolved, such as what type of blockchain will be adopted, whether it will cover all types of securities, and whether the existing business hours logic will change. In this transitional state of “the three regulatory giants are in the same frame, but the documents have yet to materialize,” the only change the market can confirm is that on-chain settlement is being regarded as the future national-level infrastructure, while all specific compliance boundaries, access thresholds, and license divisions will only become apparent with the appearance of the first official regulatory text.
From Delayed Settlement to Instant Clearing: Japan Aims to Rewrite Trading Time Differences
For a long time, the foundational logic of the Japanese securities market has been “executed trades belong to trading, clearing belongs to clearing”: orders are matched in the trading system, merely locking in the price and counterparty, while the actual transfer of funds and shares or bonds will be postponed to a subsequent settlement date, completed step by step by clearing institutions, brokers, and custodial systems. This time difference provides a buffer for the market—buyers can raise funds within a few days after execution, sellers can adjust their positions before delivery, and clearing institutions use their own credit to guarantee fulfillment in between. However, for the risk control and compliance departments of brokers, this has also been a systemically written delayed ledger: the separation of trading days and settlement days leads to operation based on the model of “first recording execution, then confirming delivery.”
According to the report from Nikkei, the on-chain settlement system designed by the FSA, MOF, and BOJ does not aim to make minor adjustments to the existing cycle but rather targets “instant clearing” itself—delivering funds and assets on-chain simultaneously at the same instant the trade is completed, using on-chain accounting as the final authority. This implies that the traditional clearing window could potentially be compressed to nearly zero, reducing the market's reliance on the credit backing of central clearing institutions and large brokers. The rhythms of brokers’ turnover funds and investors’ rolling positions will also change accordingly: more funds will need to be in place at the moment of ordering, and more compliance and accounting rules will need to be rewritten to accommodate a single timestamp of “execution means clearing.” The real uncertainty lies in how this instant clearing will be organized within what operational cycle—existing reports have not proven that it will shift to an all-day model, and when regulatory agencies will switch and enable on-chain instant deliveries during which trading periods will determine the funding efficiency landscape for brokers and institutional investors under the new clearing order.
The Technical Boundaries of On-Chain Settlement: Accounting Upgrades or Complete Tokenization
Once “execution means clearing” is pushed into practice, the next question that regulators must answer, which has been deliberately overlooked by the media, is: will they merely move the settlement records onto the chain or will the stocks and Japanese government bonds themselves also be rewritten as on-chain assets? Existing reports repeatedly use the vague term “blockchain-based payment and settlement system,” without clarifying whether it will be an open-access public chain or a strictly controlled permissioned architecture, nor revealing whether the system will touch on the digital form of deposit accounts at the Bank of Japan. Under this information gap, the external world generally dares only to speculate: if there is to be coverage for large-scale trading of securities and bonds, the system is very likely to adopt a permissioned blockchain controlled by official or market infrastructure entities, locking access rights, accounting rights, and regulatory auditing interfaces within the regulated boundaries.
The divergence in technical routes directly places the future licenses and functions of different institutions under the microscope. If it is merely a “recording upgrade” of the existing settlement layer’s flows, where the on-chain general ledger replaces certain parts of the current system, then existing Central Securities Depositaries (CSDs), Central Counterparties (CCPs), and custodial institutions will mostly be adding a new technical stack within the existing licensing framework, and regulatory pressure will focus on new data retention standards, qualifications for operating on-chain nodes, and the re-setting of compliance reporting rhythms under instant settlement environments. However, once the choice is made to fully tokenize stocks and bonds, transferring the ultimate rights certificates to on-chain tokens, the question will no longer just be about “how the system connects,” but rather “who is the ultimate registrant in a legal sense”: will clearing institutions need to obtain new licenses for on-chain asset registration, will brokers face additional approval for cross-border node access and foreign institution participation, and how data, after being synchronized on-chain among multiple parties, will meet local retention and auditing requirements will all transform from technical details into a rewrite of regulatory rules themselves.
Brokers, Custodians, and the Repo Market: Who Will Be the First to Rewrite On-Chain Rules
Once the shift is made from delayed settlements to “execution means delivery,” the first to be affected is not the end investors, but rather the functional boundaries of brokers, clearing institutions, and custodians. In the traditional model, brokers can temporarily “eat inventory” within trading days, rolling the use of client funds and proprietary positions, while clearing institutions are responsible for centralized net settlement, and custodians maintain the structure of nominal and beneficial ownership in the background; if stocks and Japanese government bonds achieve instant settlement in a national-level on-chain system, the time differences and ledger space these institutions hold will shrink to almost zero. Who can still hold “temporarily stored assets before settlement,” and who has the right to initiate collateral, pledge, and account changes on-chain, will no longer just be an internal process issue but will need to be clearly written into the design of on-chain permissions as regulatory rules.
Repo and collateral financing businesses are particularly natural testing grounds for on-chain applications. In April 2026, according to a single-source report, JSCC, Mizuho Bank, Nomura Securities, and Digital Asset completed a proof of concept on the Canton Network using Japanese government bonds as collateral, testing the possibility of simultaneously managing bonds and collateral on-chain and settling instantly; by mid-August 2026, media reported that MUFG was piloting real-time settlements for Japanese government bond repos on the same network, compressing the traditional repo process that requires cross-day and cross-system reconciliation into a single on-chain transaction. Meanwhile, a series of projects around Progmat have been described as promoting the tokenization of Japanese government bonds, attempting to use on-chain payment tools pegged to the value of the yen for 24-hour uninterrupted trading and repos, aiming for commercialization in 2026. If the future national-level settlement system adopts a similar architecture, the spot market for government bonds and the repo market will likely become the first segments to have their on-chain rules rewritten: liquidity management will shift from “time-limited windows + credit limits” to “chain positions being settled upon holding,” and risk control will transition from post-event margin and position monitoring to real-time supervision of on-chain collateral, permissions distribution, and node compliance; those who can first translate their roles into on-chain permissions and responsibilities will gain the initiative in the next round of rule rewriting.
The Game Before the 2030s: Can Japan Provide a Model for Global Settlement Trees
From the launch of the inter-departmental research group in the summer of 2026, to the earliest development plan in early 2027, and to potential operations in the early 2030s, Japan is charting a clear but lengthy regulatory advancement path for on-chain settlement: first repeatedly validating on the regulatory and technical levels, before gradually migrating the core settlement processes for stocks and Japanese government bonds onto the chain, rather than replacing the old system with a single trial. This path sharply contrasts with the explorations of other economies in central bank digital currencies and on-chain securities settlements—many central banks globally have more often started from payment or tokenized bond experiments, while Japan, with the joint efforts of the FSA, MOF, and BOJ, directly targets the reconstruction of national-level settlement infrastructure, naturally bearing the demonstration significance of a “settlement tree model.” However, in the absence of formal documents, whether the Japanese plan has institutional or technical linkages with other central bank tokenization projects remains merely speculative by the market. What type of chain architecture will the system adopt, how securities and funds will be tokenized, and what legislative and regulatory changes will be needed are all still unresolved, and the project's timely advancement will depend on technical feasibility assessments, industry cost-benefit calculations, and whether regulators and market participants are willing to continuously invest resources and adjust their roles in the coming years. Ultimately, whether Japan can offer a comparable model for global on-chain settlement around the 2030s will hinge on the policy resilience and participation in this long-term game.
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