Chinese Central Bank tests digital currency with commercial banks
The People's Bank of China has been trialling a preliminary version of a digital currency for the central bank which part-uses blockchain and could operate alongside the renminbi, according to officials. The test, thought to be the first of its kind in the world, has broad implications for the country's economy, from increasing transparency and reducing fraud to generating real-time economic insights. China, believed to be the largest user of bitcoin, could be the ideal place for a digital fiat currency to be launched, according to Simon Johnson, a professor at MIT's Sloan School of Management.
Nonetheless the test is a significant step. It shows that China is seriously exploring the technical, logistical, and economic challenges involved in deploying digital money, something that could ultimately have broad implications for its economy and for the global financial system.

A digital fiat currency—one backed by the central bank and with the same legal status as a banknote—would lower the cost of financial transactions, thereby helping to make financial services more widely available. This could be especially significant in China, where millions of people still lack access to conventional banks. A digital currency should also be cheaper to operate, and ought to reduce fraud and counterfeiting.

Even more significantly, a digital currency would give the Chinese government greater oversight of digital transactions, which are already booming. And by making transactions more traceable, this could also help reduce corruption, which is a key government priority. Such a currency could even offer real-time economic insights, which would be enormously valuable to policymakers. And finally, it might facilitate cross-border transactions, as well as the use of the renminbi outside of China because the currency would be so easy to obtain.

Private digital currencies, also known as cryptocurrencies, have shot to prominence in recent years following a wave of excitement, investment, and speculation focused on Bitcoin, a distributed, cryptographically secured form of money invented by an anonymous individual or group in 2008 (see “What Bitcoin Is, and Why It Matters”). Bitcoin’s distributed ledger of transactions, known as a blockchain, makes it possible for it to operate without any central authority.

China is not the only country interested in overhauling its currency. This year India eliminated some banknotes in an effort to reduce tax evasion and illegal income. And while some other central banks, including the Bank of England, the Bank of Canada, Deutsche Bundesbank, and the Monetary Authority of Singapore, are studying digital fiat currencies, China’s test appears to be the first of its kind anywhere in the world.

One of the main concerns voiced by other central banks looking at digital fiat currencies is that they could undermine the commercial banking system by making it possible for anyone to have an account with the central bank.

China’s digital currency is designed to avoid this problem. In a paper published in Tsinghua Financial Review, an academic journal, and posted online recently, Yao Qian, deputy director of the Technology Department of the People’s Bank of China, wrote that a digital currency could be integrated into the existing banking system, with commercial banks operating digital wallets for the central bank’s currency.

And while other countries have proposed following Bitcoin’s architecture and many of the largest banks in the world are experimenting with it, the currency developed by the People’s Bank of China is also different in design.