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Paper 2014/077
Mixcoin: Anonymity for Bitcoin with accountable mixes
Joseph Bonneau and Arvind Narayanan and Andrew Miller and Jeremy Clark and Joshua A. Kroll and Edward W. Felten
Abstract
We propose Mixcoin, a protocol to facilitate anonymous payments using the Bitcoin currency system. We build on the emergent phenomenon of currency mixes, adding an accountability mechanism to expose theft. Unlike other proposals to improve anonymity in Bitcoin, our scheme can be deployed immediately with no changes to Bitcoin itself. We demonstrate that incentives of mixes and clients can be aligned to ensure that rational mixes will not steal from clients. We contrast mixing for financial anonymity with better-studied communication mixes, demonstrating important and subtle new attacks.
Note: Extended version
Metadata
- Available format(s)
- Category
- Applications
- Publication info
- Published elsewhere. Major revision. Financial Crypto 2014
- Keywords
- Bitcoin
- Contact author(s)
- jbonneau @ gmail com
- History
- 2014-04-22: revised
- 2014-02-04: received
- See all versions
- Short URL
- https://ia.cr/2014/077
- License
-
CC BY