From mboxrd@z Thu Jan 1 00:00:00 1970 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 1WcocZ-0006TG-TP for bitcoin-development@lists.sourceforge.net; Wed, 23 Apr 2014 04:17:19 +0000 X-ACL-Warn: Received: from qmta03.westchester.pa.mail.comcast.net ([76.96.62.32]) by sog-mx-1.v43.ch3.sourceforge.com with esmtp (Exim 4.76) id 1WcocL-0007Pk-N2 for bitcoin-development@lists.sourceforge.net; Wed, 23 Apr 2014 04:17:19 +0000 Received: from omta20.westchester.pa.mail.comcast.net ([76.96.62.71]) by qmta03.westchester.pa.mail.comcast.net with comcast id tG1y1n0041YDfWL53G3JUW; Wed, 23 Apr 2014 04:03:18 +0000 Received: from crushinator.localnet ([IPv6:2601:6:4800:47f:219:d1ff:fe75:dc2f]) by omta20.westchester.pa.mail.comcast.net with comcast id tG3H1n00M4VnV2P3gG3JJ2; Wed, 23 Apr 2014 04:03:18 +0000 From: Matt Whitlock To: Tom Harding Date: Wed, 23 Apr 2014 00:03:17 -0400 Message-ID: <1533579.cuHiT41BQ7@crushinator> User-Agent: KMail/4.13 (Linux/3.12.13-gentoo; KDE/4.13.0; x86_64; ; ) In-Reply-To: <53574581.3040004@thinlink.com> References: <20140422213128.GB2578@savin> <53574581.3040004@thinlink.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Spam-Score: 0.0 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [76.96.62.32 listed in list.dnswl.org] 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: 1WcocL-0007Pk-N2 Cc: bitcoin-development@lists.sourceforge.net Subject: Re: [Bitcoin-development] Double-spending unconfirmed transactions is a lot easier than most people realise 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: Wed, 23 Apr 2014 04:17:20 -0000 On Tuesday, 22 April 2014, at 8:45 pm, Tom Harding wrote: > A network where transaction submitters consider their (final) > transactions to be unchangeable the moment they are transmitted, and > where the network's goal is to confirm only transactions all of whose > UTXO's have not yet been seen in a final transaction's input, has a > chance to be such a network. Respectfully, this is not the goal of miners. The goal of miners is to maximize profits. Always will be. If they can do that by enabling replace-by-fee (and they can), then they will. Altruism does not factor into business.