文件名称:
An Analysis of Anonymity in the Bitcoin System.pdf
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上传时间: 2019-10-09
详细说明： Anonymity in Bitcoin, a peer-to-peer electronic currency system, is a com- plicated issue. Within the system, users are identified by public-keys only. An attacker wishing to de-anonymize its users will attempt to construct the one- to-many mapping between users and public-keys and associate information external to the system with t he users. Bitcoin tries to prevent this attack by storing the mapping of a user to his or her public-keys on that user’s node only and by allowing each user to generate as many public-keys as required. In this chapter we consider the topological structure of two networks derived from Bitcoin’s public transaction history. We show that the two networks have a non-trivial topological structure, provide complementary views of the Bitcoin system and have implications for anonymity. We combine these struc- tures with external information and techniques such as context discovery and flow analysis to investigate an alleged theft of Bitcoins, which, at the time of the theft, had a market value of approximately half a million U.S. dollars.
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