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A recent study by the European Central Bank (ECB) stated that it is developing a central bank digital currency payment system that protects user privacy.

According to the report titled "Exploring the Anonymity of Central Bank Digital Currencies" published on the official website of the European Central Bank, the European System of Central Banks (ESCB) has conducted a proof-of-concept for the anonymous operation of central bank digital currencies. This is its ongoing review of central bank digital currencies. Part of a study of the potential impact of currency on public interests.

The proof-of-concept was carried out by the ECB in partnership with technology company R3 and consulting firm Accenture. ESCB used R3’s open-source blockchain platform Corda for a proof-of-concept involving two financial intermediaries, a central bank and an anti-money laundering agency. Each party in the network consists of running a CorDapp node to enable the transfer of assets between entities.

In this proof-of-concept, the bank built an AML/CFT compliance process solution that kept user identity and transaction history anonymous, i.e. the data was invisible to anyone other than the central bank and the user’s financial intermediary of choice. .

However, the European Bank also pointed out that the system needs to improve a series of issues, including reducing the amount of information visible to parties not involved in the transaction, and the ability of users to access or spend central bank digital currency balances without going through a financial intermediary. Scalability issues were also not addressed or tested in this proof of concept, and interoperability with real-time gross settlement systems must also be studied.