4. 電子貨幣
2014/11/30更新
• 発行者に依存するもの:集中型
• David Chaum. Blind signatures for untraceable payments. In Crypto, volume 82, page
199203, 1982.
• 不視署名(blind signature)
• Ronald L Rivest. Electronic lottery tickets as micropayments. In Financial
Cryptography, pages 307–314. Springer, 1997.
• Beverly Yang and Hector Garcia-Molina. Ppay: micropayments for peer-to-peer
systems. In Proc. of Computer and communications security.
• 集中型の電子貨幣系の単一障害点を分散化するには閾値署名
(threshold signature)の導入などが考えられる。
• 使用者間の貸借関係によるもの
• Ryan Fugger. Money as ious in social trust networks & a proposal for a decentralized
currency network protocol. 2004.
105. proof of
• proof of effort
• proof of work
• Bitcoin, Litecoin, etc
• 特定の値以下のハッシュ値を有する解を計算させるこ
とで、取引を有効にする。
• proof of validity
• proof of inclusion
• proof of stake
• Peercoin, Nxt, etc
• proof of burn
• Counterparty
• proof of transaction
• Fluttercoin
• proof of service
• Darkcoin
• proof of existence
• proof of digital media
• Monegraph
• proof of excellence
• proof of storage
• proof of retrievability
• proof of bandwidth
• proof of identity
• proof of identification
• proof of publication
• proof of solvency
• proof of reserve
• proof of security
• Decentralized Anonymous Credentials:
https://eprint.iacr.org/2013/622.pdf
106. Bitcoin関連論文1
• [1] Information Propagation in the Bitcoin Network, Christian Decker @ ETH Zurich, Switzerland, Roger
Wattenhofer @ Microsoft Research
• An Analysis of Anonymity in the Bitcoin System
• Quantitative Analysis of the Full Bitcoin
• Transaction Graph
• Beware the Middleman:
• Empirical Analysis of Bitcoin-Exchange Risk
• Evaluating User Privacy in Bitcoin
• Bitter to Better—How to Make Bitcoin a Better Currency