Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id A12F9BDE for ; Thu, 10 Dec 2015 12:54:34 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from wp059.webpack.hosteurope.de (wp059.webpack.hosteurope.de [80.237.132.66]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 1EA4B12D for ; Thu, 10 Dec 2015 12:54:33 +0000 (UTC) Received: from [81.0.112.130] (helo=[192.168.0.107]); authenticated by wp059.webpack.hosteurope.de running ExIM with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) id 1a70jv-0002lU-3T; Thu, 10 Dec 2015 13:54:31 +0100 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2104\)) From: Tamas Blummer In-Reply-To: Date: Thu, 10 Dec 2015 13:54:30 +0100 Content-Transfer-Encoding: quoted-printable Message-Id: <7D7416E3-0038-484D-BBA9-35FA4C2AE3DC@bitsofproof.com> References: To: jl2012@xbt.hk X-Mailer: Apple Mail (2.2104) X-bounce-key: webpack.hosteurope.de; tamas@bitsofproof.com; 1449752074; 5d31adc7; X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Cc: bitcoin-dev@lists.linuxfoundation.org Subject: Re: [bitcoin-dev] Segregated Witness features wish list 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: Thu, 10 Dec 2015 12:54:34 -0000 Note that the unused space in coin base input script allows us to = soft-fork an additional SW Merkle tree root into the design, therefore please make sure the new SW data structure also has a new slot = for future extension. Tamas Blummer