Four companies within the Mitsubishi UFJ Financial Group (MUFG) have begun a proof-of-concept (PoC) to test whether Japanese Government Bond (JGB) repo transactions can be conducted onchain from execution to settlement. The experiment represents a deeper move into blockchain-based financial infrastructure in one of Japan's major fixed-income markets, targeting the roughly $1.6 trillion JGB repo market. MUFG's stated goals for the initiative include faster settlement, increased automation, and enhanced funding and capital efficiency delivered through blockchain infrastructure.

Repos, short for repurchase agreements, are among the most heavily used funding instruments in institutional finance: one party sells securities such as JGBs and agrees to repurchase them at a set price and date, often the next business day, making them effectively collateralized short-term loans on which banks and broker-dealers rely for daily liquidity. Because these positions typically turn over so quickly, settlement timing and reliability are core operational concerns for market participants.

According to MUFG's announcement, the PoC brings together Mitsubishi UFJ Financial Group, Mitsubishi UFJ Morgan Stanley Securities, Mitsubishi UFJ Trust and Banking, and MUFG Bank. The four companies are working with Digital Asset and Progmat to examine how blockchain technology can support JGB repo transactions, and the trial will run on the Canton Network, an enterprise blockchain platform designed for financial-market applications. Both partners bring relevant track records: Digital Asset's technology also underpins Broadridge's Distributed Ledger Repo platform, which has been used by major institutions to settle substantial repo volumes, while Progmat is a digital-asset infrastructure platform originating from MUFG that has been used in Japan for digital bond and stablecoin issuance.

Testing the Full Repo Lifecycle Onchain

A central aim of the experiment is to move the repo process onto common digital infrastructure, rather than considering each stage of the transaction as an independent operation.

The group said the PoC will examine whether blockchain can automate more of the transaction lifecycle and enable real-time intraday settlement on a 24/7 basis. Conventional settlement infrastructures generally operate within fixed processing windows, meaning the securities and cash legs of a trade move at scheduled times rather than continuously. Beyond settlement speed, the project is looking to increase funding efficiency and capital efficiency. The initiative will also consider the possibility of information and transaction sharing within the domain of a common infrastructure, under the governance and regulation necessary for institutional financial markets.

Existing Financial Instruments, Not New Crypto Assets

A notable aspect of the experiment is that it centers on an existing financial product rather than on developing a new monetary asset in the form of a cryptocurrency. Modernizing traditional markets has been a growing area of interest for banks as they move into tokenization and onchain settlement. With respect to the securities leg of a JGB repo, blockchain could link those instruments even more tightly into the transactional flow, resulting in greater automation.

Part of Japan's Financial Innovation Push

MUFG has referred to the PoC as part of a larger initiative in Japan to explore financial technologies. The programme builds on the heels of the Japan Financial Services Agency's 2026 Payment Innovation Project pilot, an effort designed to help advance proof-of-concept projects. The repo trial also sits alongside separate official work on digitizing the country's capital markets, including Ministry of Finance experiments on the technical feasibility of issuing JGBs in digital form.