Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 94D4513C3 for ; Sat, 19 Sep 2015 02:01:52 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from zinan.dashjr.org (zinan.dashjr.org [192.3.11.21]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id 477ED1BA for ; Sat, 19 Sep 2015 02:01:52 +0000 (UTC) Received: from ishibashi.localnet (unknown [IPv6:2001:470:5:265:61b6:56a6:b03d:28d6]) (Authenticated sender: luke-jr) by zinan.dashjr.org (Postfix) with ESMTPSA id 75E4B1080053; Sat, 19 Sep 2015 02:01:02 +0000 (UTC) X-Hashcash: 1:25:150919:bitcoin-dev@lists.linuxfoundation.org::XtEIBVLqNPfJ+oh1:biRtf X-Hashcash: 1:25:150919:jtimon@jtimon.cc::2mQIlAdb3pPuE=4W:awJzG X-Hashcash: 1:25:150919:mark@friedenbach.org::xLQewdzd=lhCOf7b:vV0g From: Luke Dashjr To: bitcoin-dev@lists.linuxfoundation.org, Jorge =?iso-8859-15?q?Tim=F3n?= Date: Sat, 19 Sep 2015 02:01:00 +0000 User-Agent: KMail/1.13.7 (Linux/4.1.6-gentoo; KDE/4.14.8; x86_64; ; ) References: In-Reply-To: X-PGP-Key-Fingerprint: E463 A93F 5F31 17EE DE6C 7316 BD02 9424 21F4 889F X-PGP-Key-ID: BD02942421F4889F X-PGP-Keyserver: hkp://pgp.mit.edu MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-15" Content-Transfer-Encoding: quoted-printable Message-Id: <201509190201.01455.luke@dashjr.org> X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,T_RP_MATCHES_RCVD autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Subject: Re: [bitcoin-dev] Fill-or-kill transaction X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Development Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 19 Sep 2015 02:01:52 -0000 On Thursday, September 17, 2015 7:14:38 PM Jorge Tim=F3n via bitcoin-dev wr= ote: > As Mark points out this can be made safe by requiring that all the outputs > of a transaction that can expire have op_maturity/csv/rcltv of 100. That > makes them as reorg-safe as coinbase transactions. Not quite as safe. Remember that mined bitcoins have not only a 100-block=20 maturity requirement, but *also* are expensive to generate. Mere OP_CHECKMATURITYVERIFY (aka rcltv) has no cost to use... Luke