Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1YoKXN-0006EJ-5q for bitcoin-development@lists.sourceforge.net; Fri, 01 May 2015 23:40:05 +0000 X-ACL-Warn: Received: from s151.web-hosting.com ([162.213.255.69]) by sog-mx-4.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.76) id 1YoKXL-0008B7-TB for bitcoin-development@lists.sourceforge.net; Fri, 01 May 2015 23:40:05 +0000 Received: from localhost ([::1]:33539 helo=server151.web-hosting.com) by server151.web-hosting.com with esmtpa (Exim 4.82) (envelope-from ) id 1YoJsZ-000Ymb-PB for bitcoin-development@lists.sourceforge.net; Fri, 01 May 2015 18:57:56 -0400 Received: from 97.95.172.50 ([97.95.172.50]) (SquirrelMail authenticated user metamarc@metamarket.biz) by server151.web-hosting.com with HTTP; Fri, 1 May 2015 18:57:55 -0400 Message-ID: <7cfbfe793dd4be50dd97cfc1fe937880.squirrel@server151.web-hosting.com> Date: Fri, 1 May 2015 18:57:55 -0400 From: "Marc D. Wood" To: bitcoin-development@lists.sourceforge.net User-Agent: SquirrelMail/1.5.2 [SVN] MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-OutGoing-Spam-Status: No, score=-1.0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - server151.web-hosting.com X-AntiAbuse: Original Domain - lists.sourceforge.net X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - metamarket.biz X-Get-Message-Sender-Via: server151.web-hosting.com: authenticated_id: metamarc@metamarket.biz X-Source: X-Source-Args: X-Source-Dir: X-From-Rewrite: unmodified, already matched X-Spam-Score: 0.0 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. X-Headers-End: 1YoKXL-0008B7-TB Subject: [Bitcoin-development] [ANN] METAmarket - Trustless Federated Marketplaces X-BeenThere: bitcoin-development@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 May 2015 23:40:05 -0000 METAmarket: Trustless Federated Marketplaces >>> http://metamarket.biz <<< * * * Introduction METAmarket is an open source protocol and proof-of-concept reference client specifying a trustless federated marketplace which uses Bitcoin as a universal currency and Bitmessage as a P2P communication network. Time-locked refund transactions ensure that incentives are aligned toward completing the trade without the need for trusted third parties. Systemic vulnerabilities such as transaction malleability are mitigated through the use of a federated reputation model. This document is a non-technical overview of how the METAmarket client and protocol work. For more technical details, see the protocol specification. Motivation Overly centralized marketplaces and payment services extract high fees, impose and abuse excessive control and remove any hope of privacy from users. As more commerce moves online, many consumers may find their lifetime history of purchases (including books, personal items and location details) for sale to advertisers, employers, curious neighbors, stalkers, political opponents and government agencies. An ideal system would be one of secure private transactions directly between buyer and seller without middle men collecting data or adding fees. Such systems are now feasible by combining recently developed technologies for anonymous decentralized payment and messaging systems. Client To use the marketplaces, a client application which implements the METAmarket protocol is required. The client is used to post, browse and execute trades. It also requires a Bitcoin Core wallet to handle payments and refunds. A working client is available at: http://github.com/metamarcdw/metamarket