What Makes Cryptocurrencies Different?

Permissionless blockchains, which support the most popular cryptocurrency networks like Bitcoin and Ethereum, have shown that it is possible to transfer value without relying on centralized trusted third parties, something that is new and remarkable (although perhaps most clearly useful for less developed financial markets). What makes permissionless blockchains able to transfer value without relying on a small number of trusted third parties is the combination of several components that all need to work together. The components themselves are not particularly new, but the combination of these components is more than the sum of its parts. In this post, we provide a high-level overview of these components and how they interact, taking Bitcoin as an example.
Is There a Bitcoin–Macro Disconnect?

Cryptocurrencies’ market capitalization has grown rapidly in recent years. This blog post analyzes the role of macro factors as possible drivers of cryptocurrency prices. We take a high-frequency perspective, and we focus on Bitcoin since its market capitalization dwarfs that of all other cryptocurrencies combined. The key finding is that, unlike other asset classes, Bitcoin has not responded significantly to U.S. macro and monetary policy news. This disconnect is puzzling, as unexpected changes in discount rates should, in principle, affect the price of Bitcoin.
Hey, Economist! What’s the Case for Central Bank Digital Currencies?

Since the launch of Bitcoin and other first-generation cryptocurrencies, there has been extensive experimentation in the digital currency space. So far, however, digital currencies have yet to gain much ground as a means of payment. Is there a vacuum in the landscape of digital money and payments that central banks are naturally positioned to fill? In this post, Michael Lee and Antoine Martin, economists in the New York Fed’s Money and Payment Studies function, answer some questions regarding the concept of central bank digital currencies (CBDCs).
Token- or Account-Based? A Digital Currency Can Be Both
Bitcoin Is Not a New Type of Money

Bitcoin, and more generally, cryptocurrencies, are often described as a new type of money. In this post, we argue that this is a misconception. Bitcoin may be money, but it is not a new type of money. To see what is truly new about Bitcoin, it is useful to make a distinction between “money,” the asset that is being exchanged, and the “exchange mechanism,” that is, the method or process through which the asset is transferred. Doing so reveals that monies with properties similar to Bitcoin have existed for centuries. However, the ability to make electronic exchanges without a trusted party—a defining characteristic of Bitcoin—is radically new. Bitcoin is not a new class of money, it is a new type of exchange mechanism, and this type of exchange mechanism can support a variety of forms of money as well as other types of assets.
Deciphering Americans’ Views on Cryptocurrencies

Having witnessed the dramatic rise and fall in the value of cryptocurrencies over the past year, we wanted to learn more about what motivates people to participate in this market. To find out, we included a special set of questions in the May 2018 Survey of Consumer Expectations, a project of the New York Fed’s Center for Microeconomic Data. This blog post summarizes the results of that survey, shedding light on U.S. consumers’ depth of participation in cryptocurrencies and their motives for entering this new market.
Hey, Economist! What Do Cryptocurrencies Have to Do with Trust?

Bitcoin and other “cryptocurrencies” have been much in the news lately, in part because of their wild gyrations in value. Michael Lee and Antoine Martin, economists in the New York Fed’s Money and Payment Studies function, have been following cryptocurrencies and agreed to answer some questions about digital money.
A Distributed Version of Repugnance as a Constraint on Markets
The 2012 Nobel Prize in economics was awarded to Alvin E. Roth and Lloyd S. Shapley for their work on matching problems.
Entry and Exit Leads to Zero Profit for Bitcoin Miners
In a previous post, we discussed bitcoin miners’ incentives to undertake a 51 percent attack given the current condition of the bitcoin market.