Japan is preparing blockchain infrastructure for near-instant settlement of stocks and government bonds, targeting a market with about 1,166.7 trillion yen in sovereign debt.
Key Points:
- Japan’s proposed system could replace T+2 settlement for stocks and T+1 settlement for Japanese government bonds with near-real-time processing.
- Regulators and financial institutions plan a study group in summer 2026, with a development plan expected around early 2027.
- If approved, the infrastructure could begin operating in the early 2030s.
Japan Blockchain Plan
Nikkei reported that the Financial Services Agency, Ministry of Finance, Bank of Japan and financial institutions will form the group to design the blockchain system and divide responsibilities. The plan is also expected to set a road map for implementation.
Japanese stock trades currently settle two days after execution, while Japanese government bonds, or JGBs, settle the following day. Real-time processing would let investors reuse proceeds from asset sales almost immediately. Ministry of Finance data put outstanding JGBs and Treasury bills at 1,166.7 trillion yen, roughly $7 trillion at recent exchange rates.
The proposal follows earlier institutional testing. Mizuho Financial Group, Nomura Holdings, the Japan Securities Clearing Corporation and Digital Asset Holdings launched a JGB collateral trial on Apr. 20, 2026, using the Canton Network. The proof of concept tests round-the-clock transfers while preserving JGBs’ existing legal treatment under Japan’s securities framework.
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JGB Market Stakes
The infrastructure debate comes as Japanese borrowing costs remain near multi-decade highs. The 10-year JGB yield is around 2.9%, the 30-year yield is above 4%, and markets have priced roughly an 80% chance of a Bank of Japan rate increase in September.
Faster settlement would not directly change inflation, interest rates or the yen, but it could reduce capital left idle between trading and final settlement. That becomes more important when rates are high because delayed access to cash carries a larger opportunity cost.
Japan is also pursuing related blockchain work. SBI Holdings and the Solana Foundation are developing on-chain financial infrastructure tied to yen stablecoins, while the Bank of Japan has separately explored blockchain settlement for central-bank reserves.
Japan has shortened settlement cycles before, moving JGBs to T+1 in 2018 and equities to T+2 in 2019. The United States shifted stock settlement to T+1 in 2024. The new proposal would go further by targeting near-instant settlement across both Japanese stocks and government debt.
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