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CoinJoin is an anonymization method for bitcoin transactions proposed by Gregory Maxwell. The following idea is behind CoinJoin: «When you want to make a payment, find someone else who also wants to make a payment and make a joint payment together». In case of such a joint payment there will be no way to relate input and outputs in one bitcoin transaction and thus the exact direction of money movement will remain unknown to the third party. There are several implementation of anonymous bitcoin transactions inspired by CoinJoin: SharedCoins,〔(【引用サイトリンク】url=https://sharedcoin.com )〕 Dark Wallet, CoinShuffle, DarkSend feature of Dash and JoinMarket.〔(【引用サイトリンク】url=https://bitcointalk.org/index.php?topic=919116.msg10096563 )〕 CoinJoin-based mixing methods increase privacy for everybody - even those not using mixing, because it's no longer likely that all inputs to a transaction come from a single wallet, and hence you can no longer associate them to a single person.〔(【引用サイトリンク】url=http://www.reddit.com/r/Bitcoin/comments/1qvnao/blockchaininfo_implements_coinjoin_for_free_to/ )〕 == CoinShuffle == CoinShuffle is proposed by researchers from Saarland University in 2014. It further develops CoinJoin concept and increases privacy by not requiring any trusted third-party to be involved into mixed transaction creation. In the original research paper presented at the 19th European Symposium on Research in Computer Security CoinShuffe is described as a completely decentralized coin mixing protocol «inspired by CoinJoin to ensure security against theft and by the accountable anonymous group communication protocol Dissent to ensure anonymity as well as robustness against DoS attacks».〔 Only proof-of-concept implementation of CoinShuffle protocol is available at the moment. It is claimed to be written purely to evaluate the feasibility and performance.〔(【引用サイトリンク】url=http://crypsys.mmci.uni-saarland.de/projects/CoinShuffle/#prototype )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「CoinJoin」の詳細全文を読む スポンサード リンク
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