Finally, we turn to the layer at the base of the system – the Instruments, or forms of money that should confer the properties of a public good. 2/4  BIS central bankers' speeches  The decentralisation of instruments is most clearly associated with the emergence of alternative currencies to those issued by central banks. Technology firms with large ecosystems, or technology itself can create new non-fiat currencies. While today’s crypto instruments (e.g. Bitcoin) have failed to become money, we should not discount the possibility of better algorithms leading to viable cryptocurrencies as a global medium of exchange in the future. But the widespread use of private cryptocurrencies could lead to an erosion of the nation state’s monetary sovereignty. This will in turn have implications for central banks’ ability to safeguard financial stability. As Mark points out, the continued centrality of public money in the financial system is key to safeguarding the soundness and stability of all money in the economy. A pre-condition for this is that state-issued currency remains the domestic economy’s predominant unit of account. The currencies of small, open economies may be particularly vulnerable to loss of monetary sovereignty. They do not have the global network effects that currencies of larger nations enjoy. Markus Brunnermeier and others have highlighted the possibility of “digital currency areas” that transcend national borders with even larger and more powerful network effects. Currency competition is not a challenge that we are unfamiliar with.

By bundling financial and non-financial services, they are able to better meet the needs of consumers. Second, embedded finance by financial players. Regulated financial institutions are reinventing their business models and leveraging on technology to connect with customers at more and varied touchpoints. Financial institutions are “embedding” their offerings in an array of non-bank digital platforms in an attempt to reach new customers at lower acquisition costs. Embedded finance combines the benefits of platform economics with the trust premium that people still place with regulated financial institutions. Central banks and regulators should welcome both these developments. They offer the prospect of more efficient, more affordable, more inclusive financial services. 1/4  BIS central bankers' speeches  But we need to be alert to new sources of risk. If the distributor and underlying provider of a financial service are not the same entity, who is accountable to the customer? As the number of 3rd-party intermediaries involved in a financial service grows, there might also be increased operational risks. We will need to adapt our regulatory approaches. Pay greater attention to market conduct, consumer protection, and technology risks. Regulatory frameworks will need to become more modular and agile. Entity-based regulation remains relevant for the provision of key services such as deposit-taking, insurance, and the offer of securities. But for the growing number of players who offer niche financial services, we need to rely increasingly on activity-based regulation. This is all still fairly familiar ground, as the fundamental structure of financial services remains largely intact.