The Bank of Japan (BOJ) is accelerating its exploration of blockchain technology for wholesale financial infrastructure while continuing its retail central bank digital currency (CBDC) experiments. Governor Kazuo Ueda announced the expansion of a "sandbox project" to technically verify the settlement of central bank reserves—specifically current account deposits—using blockchain systems.
Governor Ueda detailed the initiative in a speech titled "The New Financial Ecosystem and the Role of Central Banks," delivered at the fintech event FIN/SUM/2026. The project aims to examine methods for connecting blockchain-based settlement systems with existing financial infrastructure and to explore use cases such as domestic interbank settlement and securities settlement. Analysts note that adopting blockchain for reserves settlement could enable instant, 24/7 settlements and reduce systemic gridlock risks during financial stress events.
Concurrently, the BOJ's retail CBDC pilot program remains active. The central bank began technical experiments in 2021, launched a pilot in 2023, and is conducting ongoing tests to prepare a "digital form of cash" for public use if demand arises. A key decision on whether to officially issue a digital yen is expected later this year.
Ueda also highlighted Japan's participation in Project Agorá, an international experiment involving multiple central banks and major private financial institutions. The project is considering a mechanism for central banks to issue tokenized deposits on a blockchain, which could streamline cross-border payments. This initiative represents a wholesale application of tokenized central bank money, distinct from a retail CBDC intended for the general public.
The BOJ's moves align with similar global trends, such as decisions in the United Kingdom and Hong Kong to issue sovereign debt on blockchain platforms, signaling a broader institutional shift towards integrating distributed ledger technology into core financial systems.
