Nice, but can you buy a pizza with it?

For centuries, money issued by governments has served as the lifeblood of the global economy the currencies in which people hold savings, make payments and keep accounts, and in which nations measure their wealth and geopolitical power. But in our digital age, its facing a bizarre, postmodern sort of competition. Cryptocurrencies created to supplant the traditional, sovereign kind have become a widespread obsession, inspiring their own counterculture and attracting hundreds of billions of dollars in speculative investment that may or may not have anything to do with their viability.

How, if at all, should issuers of the worlds official currencies respond? In a word: carefully. As financial regulators, they need to strike a balance between encouraging innovation and preventing harm. Most important, as competitors in the global market for cash, they need to improve their products.

Money comes in various forms, none ideal. Notes and coin allow for easy face-to-face transactions and serve as a mostly stable store of purchasing power, but theyre costly to hold in significant amounts and no use for transactions at a distance. Bank deposits, along with the credit and debit cards connected to them, are more convenient but also flawed. They often entail hefty fees, and since (unlike fiat money) they arent a direct liability of the government, they involve an element of risk relying on institutions that dont always succeed in maintaining the publics trust. The 2008 financial crisis took a lasting toll on confidence in the banking system one reason why holdings of physical currency have since increased.

Enter Bitcoin, the first cryptocurrency. In a 2008 white paper, the pseudonymous Satoshi Nakamoto described a system of electronic cash that would operate outside established channels and dispense with the need to trust any central authority or institution. A computer protocol would create new digital tokens. And a voluntary network of processing nodes would maintain a dispersed public ledger known as a blockchain, employing high-powered cryptography to ensure accuracy, security and anonymity. Instead of handling paper bills or transmitting deposits, people would make payments using private alphanumeric keys establishing ownership of their Bitcoin.

More than a decade later, Bitcoin and other cryptocurrencies have succeeded beyond their creators wildest hopes after a fashion. But they arent actually functioning as money. Theyre poor stores of value, because their prices fluctuate wildly. Theyre also easy to lose: An estimated 20% of all Bitcoins are stuck in wallets to which people have lost the keys. Theyre not great for payments: Most places wont accept Bitcoin, and transactions are often slow and expensive, occasionally taking days or costing more than $25 each when the network is congested. Theyre extremely wasteful: The computations required to maintain the Bitcoin blockchain alone consume as much electricity as a mid-sized country, making a significant contribution to climate change.

These seemingly fatal defects, though, havent prevented cryptocurrencies from becoming a cultural and financial phenomenon. Theyve taken on the trappings of a religious or revolutionary movement, promising a future in which decentralized networks displace not only money, but also companies, governments and society as we know it. This fervor overlaps with the hyper-speculative world of day traders, where crypto has become a favorite obsession with help from the likes of Elon Musk, who put $1.5 billion of Tesla Inc.s cash into Bitcoin. The total market value of Bitcoin, a virtual asset with almost no practical use except for illicit commerce, recently reached $1 trillion. Even Dogecoin, created entirely as a joke, briefly topped $10 billion.

Emerging Asset Class

The market value of the top 5 cryptocurrencies has exceeded $1 trillion

Source: Bloomberg

These remarkable gains are wearing down the resistance of the financial and political establishment that cryptocurrencies were intended to obliterate. Celebrity hedge-fund managers such as Paul Tudor Jones and Stanley Druckenmiller have piled in. Big Wall Street banks are recommending Bitcoin for investors and offering safekeeping services. Bitcoin-focused trusts and derivatives and possibly soon a U.S. exchange-traded fund  offer exposure with no need to hold the actual stuff. Mastercard is planning to process payments denominated in cryptocurrencies. The mayor of Miami has proposed accepting property tax payments in Bitcoin. A big step toward the mainstream came when Coinbase the leading crypto exchange, which earned more than $300 million amid the frenetic trading of 2020 filed for an IPO that could value it at close to $100 billion.

In other words, instead of revolutionizing the world of finance, cryptocurrencies are stimulating its more casino-like aspects. Theyve become the ultimate speculative asset class, a pure product of the collective imagination, with no apparent connection to the real economy. Yet as more people and institutions get involved holding balances in cryptocurrency, borrowing in order to speculate in cryptocurrency  the consequences could indeed be real. Regulators are obliged to pay attention, because the volatility of cryptocurrency might begin to threaten financial stability.

Some guidelines for public policy:

  • Dont stifle innovation. Cryptocurrencies and the underlying blockchain technology havent fulfilled their original purpose, but they could yet have interesting and important applications. The blockchains capacity to create unique and immutable digital records, for example, has enabled a burgeoning market for one-of-a-kind collectibles such as art, music and sports highlights. Its decentralized governance has made way for new kinds of social media, such as Minds and LBRY. Facebooks proposed Libra system now known as Deim is one of many that might spur reform of slow, cumbersome cross-border payments. Authorities should be patient giving entrepreneurs room to test concepts before subjecting them to the full weight of regulation lest they quash ideas that could ultimately prove beneficial.
  • Tread carefully in markets. Its not the job of regulators to stop people making risky investments, but they do need to ensure people know what theyre getting into and dont harm others. The Securities and Exchange Commission is right to get involved when digital tokens adopt the properties of securities as in many initial coin offerings. It would also make sense for the U.S. to join Europe and Canada in approving Bitcoin exchange-traded funds; this allows for adequate risk disclosure and custody procedures, and makes speculation safer and less costly for the unsophisticated investor. As more and bigger players get into the game, supervisors such as the Fed will have to ensure that exposures dont become large enough to threaten financial stability, and that institutions have ample capital to absorb any losses.
  • Work on a better alternative. Give cryptocurrencies credit for one thing above all. Theyve highlighted an enormous shortcoming of ordinary money: Theres no true digital version of cash one that represents a direct claim on the government, can easily be transferred and is universally available. Its thus encouraging (for all except those heavily invested in the existing digital tokens) to see central banks getting ready to compete. The Fed and others are seriously considering the creation of their own digital currencies.

To be sure, such radical innovation involves risk. A full-fledged central-bank digital currency would upset the business model of traditional banks. If people were able to hold government-issued money directly the equivalent of opening an account at the central bank they might dump the deposits that remain the banking systems primary source of funding. To avert a collapse, central banks would have to ease the transition by setting limits on direct holdings, by using banks as intermediaries or by providing banks with alternative financing.

Then theres the issue of privacy. A digital currency could allow governments to keep track of peoples spending a possibility of particular concern in China, which is already testing its own digital currency. To alleviate worries about surveillance, central banks will have to provide a degree of anonymity, while maintaining the access needed to track down criminals and combat money laundering.

That said, a central bank digital currency could have vast benefits. It could facilitate commerce, allowing consumers to make instant electronic payments while avoiding billions of dollars in transaction fees. It could make financial services accessible to millions of unbanked, helping them build wealth instead of succumbing to financial predators. It could improve tax collection and make economic indicators more timely and precise. It could provide policy makers with new and powerful tools to fight recessions and control inflation. Imagine, for example, the effect of issuing funds that had to be spent within six months.

In the end, the legacy of the cryptocurrency craze might be a better form of money. If so, all the commotion not to mention all the losses between now and then will have been worth it.

    Editors: Mark Whitehouse, Clive Crook.

    To contact the senior editor responsible for Bloomberg Opinions editorials: David Shipley at

    [email protected]


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