Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id D4568C59 for ; Wed, 9 Dec 2015 01:02:59 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from mail-vk0-f47.google.com (mail-vk0-f47.google.com [209.85.213.47]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 698B2154 for ; Wed, 9 Dec 2015 01:02:59 +0000 (UTC) Received: by vkay187 with SMTP id y187so33703406vka.3 for ; Tue, 08 Dec 2015 17:02:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jtimon-cc.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; bh=wmfTHrFfZ3o1OCdycmVoNbHlfuJlWWmlwo5woH/RBsY=; b=EogyNtiia+R2wCl/iHqKRhQb0LLrzApg320CQZFY0SwXvFMDbvSgAgdzh2HYdfdpp2 fEKH/W+Ho66ARXNHGox8To3wb0byu2vHO9D9n1PSzu4n2yEpEJmSZIrG98iLJbJGkS2+ SXlpz2Z9JMM/nCGl2IujkKwDt/nh1RErHQgjcdagsfMNrFqFLP7pFrf789vF1orrI2us TVbnmZjM+ZzcBO44BdrEvXr+/3QvL4a6GjEl1Sk6eQnG353C5Mv09XhWfZJC7flGoicY g/jgztJXcFR+iTatH+YWOaAsrvErOsuUIAew8y9X5F1ODwNK2rwus+K7oho5m/mRmk27 4mjQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=wmfTHrFfZ3o1OCdycmVoNbHlfuJlWWmlwo5woH/RBsY=; b=WQIDFYHQlyRil0Y5a4eklICHjbZW8+1GA1KyA1MVRQAVChpnHlZ5X9FyJMbghs1t4q 6FEvr63NZwowN+uRRh4Qg+Jw0Dw+pom7E+piC55W5dci3XUISwjP/0PkzCBGOC4ZUHwS W+iNCOuNErB1oVpNd5YGwIVd49XPq0aGekHJ2VnDQWdIw5al6+1Ko3tpOhp3MEnuwvQT yCwwOtvsMLC31dlm+f14Om6k5KJskoFr3qXliGtbW66NcxIFQg3oP45W/PN3bjHFf0CV AoA7utxEsxJAU7wFl0RKLgdsecHPBNiskbQ9g70qzHzAoeDJjusfWPBgDcTClrpIpC1v Uyjg== X-Gm-Message-State: ALoCoQnkg4BbsM25A2AFa3bMXecoqWQnftmvbJw767NKmRe4P7acrZ1lH4azNNcjEck3TGna0ooV4cVSpAY/4qyvpEE7qaRAkQ== MIME-Version: 1.0 X-Received: by 10.31.188.83 with SMTP id m80mr2363821vkf.46.1449622978663; Tue, 08 Dec 2015 17:02:58 -0800 (PST) Received: by 10.31.236.70 with HTTP; Tue, 8 Dec 2015 17:02:58 -0800 (PST) In-Reply-To: References: <20151208110752.GA31180@amethyst.visucore.com> Date: Wed, 9 Dec 2015 02:02:58 +0100 Message-ID: From: =?UTF-8?B?Sm9yZ2UgVGltw7Nu?= To: Gregory Maxwell Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_LOW,URIBL_BLACK autolearn=no version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Cc: Bitcoin Dev Subject: Re: [bitcoin-dev] Capacity increases for the Bitcoin system. 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: Wed, 09 Dec 2015 01:02:59 -0000 On Wed, Dec 9, 2015 at 1:58 AM, Jorge Tim=C3=B3n wrote: > struct hashRootStruct > { > uint256 hashMerkleRoot; > uint256 hashWitnessesRoot; > int32_t nHeight; > } Or better, for forward compatibility (we may want to include more things apart from nHeight and hashWitnessesRoot in the future): struct hashRootStruct { uint256 hashMerkleRoot; uint256 hashWitnessesRoot; uint256 hashextendedHeader; } For example, we may want to chose to add an extra nonce there.