Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193] helo=mx.sourceforge.net) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1RODaz-0007Mg-7w for bitcoin-development@lists.sourceforge.net; Wed, 09 Nov 2011 19:14:01 +0000 Received-SPF: pass (sog-mx-3.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.161.47 as permitted sender) client-ip=209.85.161.47; envelope-from=gavinandresen@gmail.com; helo=mail-fx0-f47.google.com; Received: from mail-fx0-f47.google.com ([209.85.161.47]) by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1RODay-0000Dy-FU for bitcoin-development@lists.sourceforge.net; Wed, 09 Nov 2011 19:14:01 +0000 Received: by faat2 with SMTP id t2so2943324faa.34 for ; Wed, 09 Nov 2011 11:13:54 -0800 (PST) MIME-Version: 1.0 Received: by 10.152.134.101 with SMTP id pj5mr2543386lab.1.1320866034175; Wed, 09 Nov 2011 11:13:54 -0800 (PST) Received: by 10.152.2.231 with HTTP; Wed, 9 Nov 2011 11:13:54 -0800 (PST) In-Reply-To: References: Date: Wed, 9 Nov 2011 14:13:54 -0500 Message-ID: From: Gavin Andresen To: =?ISO-8859-1?Q?Michael_Gr=F8nager?= Content-Type: text/plain; charset=ISO-8859-1 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 (gavinandresen[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: 1RODay-0000Dy-FU Cc: Bitcoin Dev Subject: Re: [Bitcoin-development] multisig, op_eval and lock_time/sequence... 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, 09 Nov 2011 19:14:01 -0000 > 1. from client1 I issue a transaction containing one of the signatures, with a locktime e.g. 10 minutes from now and a sequence of 0. This transaction is now posted to the p2p network. As Alan said, that won't work-- it will not be relayed across the network because it isn't a valid transaction until it has enough signatures. > Alternatively, the transactions would need to be sent between clients using another protocol... Formats and protocols for gathering signatures are in the TODO category-- Alan's BIP 10 is the next piece of the puzzle, maybe a standardized http/https RESTful API, or HTTP/JSON, or protocol buffers and raw sockets, or... something... solution (or solutions) built on top of that makes sense. I don't think partially-signed transactions belong on the main Bitcoin P2P network, mostly because I don't see any way of preventing somebody from endlessly spamming bogus, will-never-be-completed partial transactions just to be annoying. -- -- Gavin Andresen