Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/223977
Authors: 
Allen, Sarah
Capkun, Srdjan
Eyal, Ittay
Fanti, Giulia
Ford, Bryan
Grimmelmann, James
Juels, Ari
Kostiainen, Kari
Meiklejohn, Sarah
Miller, Andrew
Prasad, Eswar
Wüst, Karl
Zhang, Fan
Year of Publication: 
2020
Series/Report no.: 
IZA Discussion Papers No. 13535
Abstract: 
Central banks around the world are exploring and in some cases even piloting Central Bank Digital Currencies (CBDCs). CBDCs promise to realize a broad range of new capabilities, including direct government disbursements to citizens, frictionless consumer payment and money-transfer systems, and a range of new financial instruments and monetary policy levers. CBDCs also give rise, however, to a host of challenging technical goals and design questions that are qualitatively and quantitatively different from those in existing government and consumer payment systems. A well-functioning CBDC will require an extremely resilient, secure, and performant new infrastructure, with the ability to onboard, authenticate, and support users on a massive scale. It will necessitate an architecture simple enough to support modular design and rigorous security analysis, but flexible enough to accommodate current and future functional requirements and use cases. A CBDC will also in some way need to address an innate tension between privacy and transparency, protecting user data from abuse while selectively permitting data mining for end-user services, policymakers, and law enforcement investigations and interventions. In this paper, we enumerate the fundamental technical design challenges facing CBDC designers, with a particular focus on performance, privacy, and security. Through a survey of relevant academic and industry research and deployed systems, we discuss the state of the art in technologies that can address the challenges involved in successful CBDC deployment. We also present a vision of the rich range of functionalities and use cases that a well-designed CBDC platform could ultimately offer users.
Subjects: 
new financial technologies
digital money
cryptocurrencies
payment systems
JEL: 
E42
E52
E58
O31
Document Type: 
Working Paper

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