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Working Paper
A Macroeconomic Model of Central Bank Digital Currency
We develop a quantitative New Keynesian DSGE model to study the introduction of a central bank digital currency (CBDC): government-backed digital money available to retail consumers. At the heart of our model are monopolistic banks with market power in deposit and loan markets. When a CBDC is introduced, households benefit from an expansion of liquidity services and higher deposit rates as bank deposit market power is curtailed. However, deposits also flow out of the banking system and bank lending contracts. We assess this welfare trade-off for a wide range of economies that differ in their ...
Journal Article
The Blockchain Revolution: Decoding Digital Currencies
Cryptocurrencies and decentralized finance have grown considerably since the publication of the white paper on bitcoin in 2009. This article presents an overview of cryptocurrencies, blockchain technology, and their applications, explaining the spirit of the enterprise and how it compares with traditional operations. We discuss money, digital money, and payments; cryptocurrencies, blockchain, and the double-spending problem of digital money; decentralized finance; and central bank digital currency.
Speech
U.S. Regulations and Approaches to Cryptocurrencies
Remarks at the BIS Central Bank Legal Experts’ Meeting, Basel, Switzerland
Briefing
A Historical Perspective on Digital Currencies
This article reviews private currencies in U.S. history to shed light on the contemporary issue of digital currencies. This perspective suggests that government interventions have a critical role in creating a well-functioning money and payments system. Particularly, a central bank digital currency (CBDC) can be a useful tool to supplement regulation in addressing long-standing concerns and risks associated with private currencies.
Briefing
Observations from the Retail CBDCs of the Caribbean
Three retail central bank digital currencies (rCBDCs) have been issued in the Caribbean, but thus far all have struggled to achieve expected adoption from both consumers and merchants. The efforts to launch these rCDBCs offer three takeaways: 1) the underlying technologies of rCBDCs may have little effect on adoption; 2) an rCBDC may need to demonstrate value added to entice consumers to use it; and 3) an rCBDC platform may need to be integrated into the larger financial ecosystem to be widely adopted.
Speech
The first line of defense and financial crime: keynote Address at the 1LoD Summit, New York City
Keynote Address at the 1LoD Summit, New York City.
Working Paper
Eggs in One Basket: Security and Convenience of Digital Currencies
Digital currencies store balances in anonymous electronic addresses. We analyze the trade-offs between safety and convenience of aggregating balances in addresses, electronic wallets and banks. In our model agents balance the risk of theft of a large account with the cost to safeguarding a large number of passwords of many small accounts. Account custodians (banks, wallets and other payment service providers) have different objectives and tradeoffs on these dimensions; we analyze the welfare effects of differing industry structures and interdependencies, and in particular the consequences ...
Discussion Paper
The Future of Payments Is Not Stablecoins
Stablecoins, which we define as digital assets used as a medium of exchange that are purported to be backed by assets held specifically for that purpose, have grown considerably in the last two years. They rose from a market capitalization of $5.7 billion on December 1, 2019, to $155.6 billion on January 21, 2022. Moreover, a market that was once dominated by a single stablecoin—Tether (USDT)—now boasts five stablecoins with valuations over $1 billion (as of January 21, 2022; data about the supply of stablecoins can be found here). Analysts have started to pay increased attention to the ...
Tokens vs. Accounts: Why the Distinction Still Matters
Computer science experts may say the difference is irrelevant in the digital world. But when it comes to payments, distinguishing the two still has value in the real world.