Japan Plans Blockchain System for Instant Stock, Bond Settlement

Japan's top financial regulators and central bank are launching a joint initiative to study the creation of a blockchain-based payment infrastructure for settling stock and government bond transactions in real time. The Financial Services Agency, the Ministry of Finance, and the Bank of Japan will form a study group this summer with financial institutions to develop a plan for the next-generation system, according to a report from Nikkei published on August 26, 2026.

The project aims to fundamentally change the settlement process for Japan's securities markets. Currently, cash settlement for stock trades occurs two business days after execution, while Japanese government bond transactions settle the following business day. The proposed blockchain infrastructure would enable instantaneous settlement, bridging the gap between a trade and its cash payment. This would allow investors to reinvest proceeds from asset sales almost immediately, reducing the period of counterparty risk and improving market efficiency.

A key technical detail of the proposal involves tokenizing portions of the balances that commercial banks hold at the Bank of Japan on a blockchain network. This design...