Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1RaRX8-0007w6-UD for bitcoin-development@lists.sourceforge.net; Tue, 13 Dec 2011 12:32:34 +0000 Received-SPF: pass (sog-mx-1.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.161.47 as permitted sender) client-ip=209.85.161.47; envelope-from=timon.elviejo@gmail.com; helo=mail-fx0-f47.google.com; Received: from mail-fx0-f47.google.com ([209.85.161.47]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1RaRX8-0002M7-52 for bitcoin-development@lists.sourceforge.net; Tue, 13 Dec 2011 12:32:34 +0000 Received: by faaa20 with SMTP id a20so116008faa.34 for ; Tue, 13 Dec 2011 04:32:28 -0800 (PST) MIME-Version: 1.0 Received: by 10.180.0.100 with SMTP id 4mr25534171wid.48.1323779547902; Tue, 13 Dec 2011 04:32:27 -0800 (PST) Received: by 10.223.81.79 with HTTP; Tue, 13 Dec 2011 04:32:27 -0800 (PST) In-Reply-To: References: <1323731781.42953.YahooMailClassic@web120920.mail.ne1.yahoo.com> <201112121841.39864.luke@dashjr.org> <1323736946.58149.YahooMailNeo@web121001.mail.ne1.yahoo.com> Date: Tue, 13 Dec 2011 13:32:27 +0100 Message-ID: From: =?ISO-8859-1?Q?Jorge_Tim=F3n?= Cc: "bitcoin-development@lists.sourceforge.net" Content-Type: text/plain; charset=ISO-8859-1 X-Spam-Score: -0.4 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for sender-domain 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (timon.elviejo[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 1.2 MISSING_HEADERS Missing To: header -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-Headers-End: 1RaRX8-0002M7-52 Subject: Re: [Bitcoin-development] Fwd: [BIP 15] Aliases 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: Tue, 13 Dec 2011 12:32:35 -0000 No decentralized solution for non-fixed addresses comes to mind. If we're going to always rely on servers, we should definitely offer dynamic addresses. There was a bitcoin service in the forum to which merchants send different addresses and the service manages the payments for the merchant without holding his private keys. The service identified each shopping cart by a combination of the total amount and the selected address for that cart. I don't remember the name of the service though. It could easily implement aliases (the same alias for various rotating addresses). Of course, the service provider still knows your income and you still need to provide new addresses to maintain your privacy. I say this just in case it inspires someone.