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Peppercoin is a cryptographic system for processing micropayments. Peppercoin Inc. was a company that offers services based on the peppercoin method. The peppercoin system was developed by Silvio Micali and Ron Rivest and first presented at the RSA Conference in 2002〔S. Micali and R. L. Rivest. ''(Micropayments revisited ).'' In B. Preneel, editor, Proc. Cryptography Track at RSA Conference 2002, pages 149–263. Springer, 2002. Lecture Notes in Computer Science No. 2271.〕 (although it had not yet been named.) The core idea is to bill one randomly selected transaction a lump sum of money rather than bill each transaction a small amount. It uses "universal aggregation", which means that it aggregates transactions over users, merchants as well as payment service providers. The random selection is cryptographically secure -- it cannot be influenced by any of the parties. It is claimed to reduce the transaction cost per dollar from 27 cents to "well below 10 cents."〔(2003 press release )〕 Peppercoin, Inc. was a privately held company founded in late 2001 by Micali and Rivest based in Waltham, MA. It has secured about $15M in venture capital in two rounds of funding.〔(Micro-payment's Peppercoin Bought Out )〕 Its services have seen modest adoption.〔(Peppercoin picked by Wurld Media for P2P payment system )〕〔(Peppercoin scoops up customer for loyalty program )〕 Peppercoin collects 5-9% of transaction cost from the merchant.〔(Peppercoin, Inc. Response to the Request for Information By the Joint Committee of the Higher Education and Entertainment Communities Technology Task Force )〕 Peppercoin, Inc. was bought out in 2007 by Chockstone for an undisclosed amount.〔 ==References== 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「Peppercoin」の詳細全文を読む スポンサード リンク
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