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 1WdFqb-0000xi-2A for bitcoin-development@lists.sourceforge.net; Thu, 24 Apr 2014 09:21:37 +0000 Received-SPF: pass (sog-mx-1.v43.ch3.sourceforge.com: domain of gmail.com designates 74.125.82.45 as permitted sender) client-ip=74.125.82.45; envelope-from=andyparkins@gmail.com; helo=mail-wg0-f45.google.com; Received: from mail-wg0-f45.google.com ([74.125.82.45]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1WdFqa-0005ij-Ai for bitcoin-development@lists.sourceforge.net; Thu, 24 Apr 2014 09:21:37 +0000 Received: by mail-wg0-f45.google.com with SMTP id l18so1938978wgh.4 for ; Thu, 24 Apr 2014 02:21:30 -0700 (PDT) X-Received: by 10.180.105.72 with SMTP id gk8mr5533319wib.32.1398331290170; Thu, 24 Apr 2014 02:21:30 -0700 (PDT) Received: from momentum.localnet ([91.84.15.31]) by mx.google.com with ESMTPSA id q2sm34230618wix.5.2014.04.24.02.21.28 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 24 Apr 2014 02:21:28 -0700 (PDT) From: Andy Parkins To: Mike Hearn Date: Thu, 24 Apr 2014 10:21:26 +0100 Message-ID: <27973999.1P2WQtRr33@momentum> User-Agent: KMail/4.10.5 (Linux/3.10-2-amd64; KDE/4.10.5; x86_64; ; ) In-Reply-To: References: <201404231421.53349.andyparkins@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Spam-Score: -1.6 (-) 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 (andyparkins[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record -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: 1WdFqa-0005ij-Ai Cc: Bitcoin Dev Subject: Re: [Bitcoin-development] Coinbase reallocation to discourage Finney attacks 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: Thu, 24 Apr 2014 09:21:37 -0000 On Wednesday 23 April 2014 15:31:38 Mike Hearn wrote: > > There _are_ consequences though: 95% of the time, you end up buying > > something and paying for it. > > Yeah, I was imagining a situation in which people who use Bitcoin regularly > do buy things they actually want, but wouldn't say no to occasionally > getting them for free (think coffees at starbucks etc). So if their double > spend fails, no big deal, they're no worse off than if they didn't try. Again true enough; but then we're back to evenly distributed dishonesty, and so you still don't get the potential 5% scam being used at 100% capacity. Andy -- Dr Andy Parkins andyparkins@gmail.com