Japan's Bond Market will be Fully 'On-Chain'

Original Author: Vaidik Mandloi

Compiled and Organized by: BitpushNews

On a Saturday in August 2025, something happened that should have set every cryptocurrency group on the internet ablaze. Bank of America, Citadel Securities, the Depository Trust & Clearing Corporation (DTCC), and Société Générale settled a U.S. Treasury repo transaction in real-time over a blockchain over the weekend.

To put it simply, a repo is one of the most fundamental transactions in institutional finance: one party sells government bonds to another with an agreement to buy them back the next day, usually to raise short-term overnight cash.

This is the "plumbing" of the financial system. Banks, hedge funds, and central banks use repos daily to manage liquidity, with trillions of dollars flowing through this market. For the first time ever, this transaction was settled almost instantaneously via atomic settlement on a blockchain outside of market hours, with participants being some of the world's largest financial institutions.

Eight months later, on April 20, 2026, Japan's central clearing house JSCC, Mizuho Financial Group, Nomura Holdings, and Digital Asset launched a proof-of-concept (PoC) to move Japanese Government Bonds (JGBs) as collateral onto the Canton Network.

JGBs are one of Asia's most important financial instruments, with over $9 trillion in circulation value, making them the most widely used single collateral asset in the region's institutional market. When banks and hedge funds across Asia need to secure their leveraged positions, JGBs are often the first choice. Now, the entire collateral system is migrating on-chain.

This could very well be the biggest blockchain news of 2026.

This article will analyze why JGBs are the most suitable assets for tokenization first, why the Canton Network continues to win institutional mandates while public chains fight for retail traffic, and how "24/7" collateral settlement will fundamentally change global trading desks.

Why JGBs? Why Now?

For decades, Japan has tried to make the Yen a global reserve currency, but that ambition has never truly materialized. Even today, the Yen accounts for only about 4-6% of global reserves, trailing behind the US Dollar, Euro, and even the British Pound.

However, something unexpected happened along the way: Japanese Government Bonds became one of the fastest-growing collateral assets on Euroclear's Collateral Highway, the infrastructure for moving collateral among the world's largest financial institutions. Foreign holdings of JGBs have climbed to about 11.9%, meaning approximately 144 trillion Yen is held by institutions outside Japan.

In institutional finance, collateral is everything. Every leveraged position, every derivatives trade, every repo requires high-quality assets as security. Backed by the world's third-largest economy, JGBs carry virtually no default risk and are one of the few assets globally that meet this standard. When a hedge fund in Singapore builds a leveraged position or a bank in London covers its derivatives exposure, JGBs are frequently used as collateral.

The most important infrastructure victory for cryptocurrencies is happening inside traditional finance. Even though Japan never won the "currency war", JGBs have become the operational infrastructure for Asian institutional finance.

The problem is that the entire collateral system operates as if it were still 1995. Transferring JGB collateral between two institutions involves navigating a multi-layered holding structure: the Bank of Japan (BOJ) at the top, followed by Hofuri (Japan's securities depository), then custodian banks, and sub-custodian banks. Each layer requires separate reconciliation and only operates during Tokyo business hours (roughly 9 AM to 3 PM JST).

A collateral transfer that should take seconds can end up taking days. During these days, the collateral is effectively "frozen." A trading desk in New York needing to use it at 10 PM must wait for Tokyo to wake up. A study by the Global Financial Markets Association (GFMA) and Boston Consulting Group (BCG) estimated that blockchain could unlock $100 billion in stuck collateral globally; for a bank handling $100 billion in daily repos, tokenized settlement could save $150 million to $300 million annually in operational costs alone.

Here's something unsettling for Japan: The United States has already moved.

The DTCC, which custodies $99 trillion in U.S. securities and processes $3.7 quadrillion in transactions annually, partnered with Digital Asset in December 2025 to tokenize U.S. Treasuries on the Canton Network. This means the core of U.S. securities infrastructure is moving towards 24/7 tokenized settlement.

Broadridge already processes $354 billion in tokenized Treasury repo transactions daily on the same network; JPMorgan's Kinexys has processed over $1.5 trillion in cumulative transaction volume through its on-chain payment rails. U.S. Treasuries are rapidly becoming "always available, always mobile" collateral assets, while JGBs remain locked within Tokyo's business hours.

If you are a global fund manager needing to post collateral for a margin call at 2 AM, and you can choose between tokenized U.S. Treasuries that settle instantly or JGBs that require waiting 6 hours for Tokyo to open, I believe you would choose Treasuries every time.

If this choice is amplified across thousands of trading desks, JGBs risk losing their "premier collateral" status. For a country whose sovereign bonds are deeply intertwined with Asia's financial collateral system, this is an existential issue. The four companies involved in the JGB on-chain trial used the word "urgent" in their press release. Given the pace of U.S. infrastructure evolution, it is hard to disagree.

Why Canton Keeps Winning

When Japan's JSCC needed to choose a network for JGB collateral, they chose Canton – the same chain already used by DTCC, Broadridge, and JPMorgan. The reason lies in the extremely demanding requirements of sovereign bond collateral.

Sovereign bond collateral has specific needs that most blockchains cannot meet. When Mizuho transfers JGB collateral to a counterparty in London, the transaction must comply with Japan's Book-Entry Transfer Act. The blockchain record needs to be legally synchronized with Hofuri's official registry.

Each party in the transaction—from the clearing house to the custodian to the counterparty—can only see data authorized by Japanese and international securities laws. Furthermore, the entire process requires atomic settlement, meaning the collateral and the payment must move simultaneously, or neither moves.

This is an extremely complex set of constraints. Canton was chosen because its architecture is designed precisely to solve these problems. Each institution runs its own ledger, and cross-institutional transactions only synchronize the data each party is authorized to see. Smart contracts, written using Digital Asset's Daml language, dictate exactly who can see what and who must authorize each step.

Therefore, when JSCC, Mizuho, and Nomura conduct JGB collateral transfers on Canton, the clearing house sees the full picture, Mizuho sees its side, Nomura sees its side, and no one sees anything they shouldn't. Canton is now arguably the only network globally where the three major sovereign bond collateral pools (U.S., Japanese, European) can move freely across borders, in real-time, 24/7. No other network, public or private, comes close to this.

What Does "24/7" Collateral Actually Change?

Most reports on tokenized on-chain settlement stop at the point of "it's faster." But speed is just the beginning; the real transformation lies in how the system behaves under stress.

Consider what happened during the COVID-19 pandemic in March 2020. Markets crashed, volatility soared, and initial margin requirements for equity futures jumped 100% within weeks. Funds unable to meet margin calls were forced to sell assets to raise cash.

But selling assets in a falling market pushes prices down, triggering more margin calls, which forces more selling. This feedback loop is one of the most dangerous dynamics in finance, and it nearly broke the system again during the UK LDI pension crisis in September 2022.

How does 24/7 tokenized settlement change this?

• Direct Pledging: Currently, when facing a margin call, most funds must first sell assets to get cash. With on-chain collateral, a fund can directly pledge JGBs or Treasuries to meet the requirement without converting to cash first. The "forced liquidation spiral" weakens because fewer institutions are dumping assets into a falling market just for liquidity.
• Solving the "I Give, You Give" Problem: In a traditional repo, the cash lender sends the money first and receives the collateral later. During this window, one party is exposed. Banks factor this "intraday exposure" into their haircuts and funding costs.
• Atomic Execution: With on-chain atomic settlement, both sides of the transaction—collateral and cash—move in the same instant. Santander tested this in December 2024, executing a $50 million and €50 million intraday repo on JPMorgan's Kinexys, which was automatically unwound three hours later. Intraday repos that once required complex third-party setups or committed credit lines become routine.

More significantly, during the Canton demonstration in January 2026, the London Stock Exchange Group (LSEG) introduced its Digital Settlement House (DiSH) into the transaction. DiSH uses tokenized commercial bank deposits as the cash leg, rather than stablecoins.

This is because banks won't use USDC to settle billion-dollar transactions – USDC is a private IOU, not "money good." DiSH tokens represent actual deposits at regulated banks and can be transferred on-chain 24/7. This solves the cash leg problem, the final piece of the puzzle for institutional adoption. Now, Japan intends to connect JGBs into this same infrastructure.

What This Means

If the JGB trial succeeds, and U.S. Treasuries are already online, with European sovereign bonds also in demonstrations, then, in my view, Canton is starting to look like the next SWIFT.

This is a single network that is becoming the default layer for moving the world's most critical collateral across borders. Like SWIFT, once enough institutions join, exiting becomes nearly impossible. Network effects compound. Each new class of sovereign bonds added benefits the existing participants and makes it harder for latecomers to compete.

I think this is worth pondering. We in the crypto space have spent years debating decentralization, worrying about single points of failure, and building systems where no single entity can control the trajectory. And now, the most significant blockchain deployments in history are converging on a single permissioned network managed by the very institutions that run global finance.

Is this good or bad? It depends on what you think the point of all this is. If the goal is to improve capital market efficiency, reduce settlement risk, and unlock hundreds of billions in stuck collateral, then yes, it is working. If the goal is to diminish the power of existing financial institutions, then it is doing precisely the opposite – the old gatekeepers are just getting upgraded infrastructure.

I don't think this makes the event unimportant. Settling government bonds within a financial system that is on a single blockchain, operating 24/7, cross-border, and atomically, is a genuine upgrade for how global finance works. But I think it's worth being honest about what *kind* of upgrade this is – it's an efficiency revolution: the plumbing is being rebuilt, but the plumbers are still the same people.