The Bank of Japan is preparing to test whether central bank reserves can function within blockchain based systems, marking a significant step toward modernizing Japan’s financial infrastructure. Governor Kazuo Ueda said the central bank will experiment with its current account deposits funds that commercial banks hold at the BOJ through a sandbox initiative designed to evaluate blockchain integration.
Speaking at a financial technology conference in Tokyo, Ueda emphasized that central banks must adapt to a shifting ecosystem shaped by tokenization and programmable payments. The pilot will assess how central bank money could interact with distributed ledger systems while maintaining compatibility with existing settlement frameworks.

Interbank and Securities Settlement Use Cases
The BOJ plans to collaborate with external experts to examine blockchain applications in domestic interbank transfers and securities settlement. Officials believe smart contract functionality could improve efficiency, automate execution, and reduce operational friction in wholesale transactions.
Japan Joins Global Blockchain Settlement Efforts
Japan is also participating in Bank for International Settlements-led Project Agora, which explores cross-border wholesale settlement using tokenized central bank money. The initiative could streamline international payments by enabling central banks to issue tokenized deposits on blockchain networks.
Separately, the BOJ continues piloting a potential retail central bank digital currency, expanding discussions with private-sector participants as Japan refines its broader digital asset regulatory framework.
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