Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 9B3818D7 for ; Tue, 16 Aug 2016 19:37:59 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from zinan.dashjr.org (unknown [192.3.11.21]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id 26D921DF for ; Tue, 16 Aug 2016 19:37:59 +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 D7A7038A17C2; Tue, 16 Aug 2016 19:37:21 +0000 (UTC) X-Hashcash: 1:25:160816:bitcoin-dev@lists.linuxfoundation.org::Bzji2BGgZ0W0ATN4:eSduo X-Hashcash: 1:25:160816:jl2012@xbt.hk::XJ=Hs/qy7fP5fju1:t=c8 From: Luke Dashjr To: bitcoin-dev@lists.linuxfoundation.org, Johnson Lau Date: Tue, 16 Aug 2016 19:37:19 +0000 User-Agent: KMail/1.13.7 (Linux/4.1.18-gentoo; KDE/4.14.20; x86_64; ; ) References: <1736097121.90204.1471369988809@privateemail.com> In-Reply-To: <1736097121.90204.1471369988809@privateemail.com> 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-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201608161937.20748.luke@dashjr.org> X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00,RDNS_DYNAMIC autolearn=no version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Subject: Re: [bitcoin-dev] New BIP: Dealing with OP_IF and OP_NOTIF malleability in P2WSH X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Aug 2016 19:37:59 -0000 On Tuesday, August 16, 2016 5:53:08 PM Johnson Lau via bitcoin-dev wrote: > A new BIP is prepared to deal with OP_IF and OP_NOTIF malleability in > P2WSH: > https://github.com/jl2012/bips/blob/minimalif/bip-minimalif.mediawiki > https://github.com/bitcoin/bitcoin/pull/8526 I am not sure this makes sense. SegWit transactions are already non-malleable due to skipping the witness data in calculating the transaction id. What is the benefit to this? Luke