Abstract
Bitcoin is a purely online virtual currency, unbacked by either physical commodities or sovereign obligation; instead, it relies on a combination of cryptographic protection and a peer-to-peer protocol for witnessing settlements. Consequently, Bitcoin has the unintuitive property that while the ownership of money is implicitly anonymous, its flow is globally visible. In this paper we explore this unique characteristic further, using heuristic clustering to group Bitcoin wallets based on evidence of shared authority, and then using re-identification attacks (i.e., empirical purchasing of goods and services) to classify the operators of those clusters. From this analysis, we consider the challenges for those seeking to use Bitcoin for criminal or fraudulent purposes at scale.
- Androulaki, E., Karame, G., Roeschlin, M., Scherer, T., Capkun, S. Evaluating user privacy in Bitcoin. In Proceedings of Financial Cryptography 2013 (2013).Google ScholarCross Ref
- CBC News. Revenue Canada says BitCoins aren't tax exempt, Apr. 2013. www.cbc.ca/news/canada/story/2013/04/26/business-bitcoin-tax.html.Google Scholar
- Eha, B.P. Get ready for a Bitcoin debit card. CNNMoney, Apr. 2012. money.cnn.com/2012/08/22/technology/startups/bitcoin-debit-card/index.html.Google Scholar
- European Central Bank. Virtual Currency Schemes. ECB Report, Oct. 2012. www.ecb.europa.eu/pub/pdf/other/virtualcurrencyschemes201210en.pdf.Google Scholar
- Federal Bureau of Investigation. (U) Bitcoin virtual currency unique features present distinct challenges for deterring illicit activity. Intelligence assessment, cyber intelligence and criminal intelligence section, Apr. 2012. cryptome.org/2012/05/fbi-bitcoin.pdf.Google Scholar
- FinCEN. Application of FinCEN's regulations to persons administering, exchanging, or using virtual currencies, Mar. 2013. www.fincen.gov/statutes_regs/guidance/pdf/FIN-2013-G001.pdf.Google Scholar
- Nakamoto, S. Bitcoin: A peer-to-peer electronic cash system, 2008. bitcoin.org/bitcoin.pdf.Google Scholar
- Peck, M. Bitcoin-central is now the World's First Bitcoin Bank…kind of. IEEE Spectrum: Tech talk, Dec. 2012. spectrum.ieee.org/tech-talk/telecom/internet/bitcoincentral-is-now-the-worlds-first-bitcoin-bankkind.Google Scholar
- Reid, F., Harrigan, M. An analysis of anonymity in the Bitcoin system. In Security and Privacy in Social Networks. Y. Altshuler, Y. Elovici, A.B. Cremers, N. Aharony, and A. Pentland, eds. Springer, New York, 2013, 197--223.Google ScholarCross Ref
- Ron, D., Shamir, A. Quantitative analysis of the full Bitcoin transaction graph. In Proceedings of Financial Cryptography 2013 (2013).Google ScholarCross Ref
- Securities and Exchange Commission. SEC charges Texas man With running Bitcoin-denominated Ponzi scheme, July 2013. www.sec.gov/News/PressRelease/Detail/PressRelease/1370539730583.Google Scholar
- znort987. blockparser. github.com/znort987/blockparser.Google Scholar
Index Terms
- A fistful of Bitcoins: characterizing payments among men with no names
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