The move is a sign of increasing concern that new forms of private money could disrupt Japan's financial system.
The Federal Reserve chair said "the more direct route" would be to regulate stablecoins.
The report will address cryptocurrencies, stablecoins and CBDCs.
The ECB has been discussing the potential launch of a eurozone central bank digital currency since the beginning of the year.
While no date has been given for the launch of a digital cedi, the deputy governor said its success would determine the next steps.
Central banks are focusing on domestic CBDC use, even though the implications go beyond borders.
Running on JPMorgan’s Onyx blockchain, it was the first cross-border CBDC transaction to use automated-market-making smart contracts.
The bank plans to expand the trial between September and December.
One central bank official says the future "will undoubtedly involve less cash."
“This experiment made it possible to test the integration of issuance and settlement activities, including exchanges on the secondary market,” said the Bank of France.
The official also said more details on the CBDC's design may kick up a debate on how its issuance could impact financial institutions.
The Ukrainian legislation now lists the future central bank digital currency as a kind of money similar to cash or bank accounts.
Passengers with Industrial and Commercial Bank of China's mobile app can use the digital yuan to pay their fares.
A Federal Reserve official praised stablecoins over CBDCs, yesterday. The debate cuts right to role of government in money.
The Monetary Authority of Singapore’s “Global CBDC Challenge” will be supported by Amazon Web Services, Mastercard, Hyperledger and others.