Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id A23D289C for ; Sun, 26 Mar 2017 14:16:17 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from mail-yw0-f173.google.com (mail-yw0-f173.google.com [209.85.161.173]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 1C1EC1AA for ; Sun, 26 Mar 2017 14:16:17 +0000 (UTC) Received: by mail-yw0-f173.google.com with SMTP id v76so17064342ywg.0 for ; Sun, 26 Mar 2017 07:16:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=KOqsW1dklMwIn6fqCbuB449aXkU3jiiXMM+qJTlRLrI=; b=R+euySmilfwOX2PTAnbAv1Jk7yJsY9y2EcEyNkoVj0R9MxV2LtUYnyXzsFDimr+07r pRbWlqITEzufwOISk/4ZVViESwzrMwWaU1P26ilIcBqyuFwos+aLoaIM+jEb/fCMe+Ch 7aakyhVh1oDb9J3GAUOMIxF6FLFLElPMYEH+MkpdFC+UiXnEqJLm5oQITg4hDPfMV37I EbyAwslvtbIV7xtwQb46qZRJdBG1hHwx4f2xqncuSgxHNbVOLnrIrrHmsLf9clQQuScm nFv0Rj9TKSC4v1IGPPRQxLKBmpWYI4D1wqqWsJa/8WrbTvrBUtSQOf6rV2kiBAZmqA0X Vaew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=KOqsW1dklMwIn6fqCbuB449aXkU3jiiXMM+qJTlRLrI=; b=NYZhCU8UUhkR9pvmgv7KWdgcCJ+UrxeI8ACSbmf4m+Mv2zuzef3OjJBXshruOjU1Ni uPTb1icSluyrehM2xiY9mVNASAXstL3Cj/NBRnz5svqsRC2WB9QxpJCyu7+E73BVzVNo YtotK5PNu3KchUODawYl6TTVPYdw3dZeQMmsTcS+JF0EoZHvCadUUSqn8RDUh2KgqpsZ kgelEEqoGSbyv2tlTsStuCUb8yJjMtkd3Gs9NYFl3eo9di06/dsUtz1nbZUIAmJJb9NE Z6X67iXvjp0X1Un8R5Ol95UbmZOUI7UOwnx4QABv/i8aIuW2npmpYKTuzdyRM9Qzd9z/ VxFA== X-Gm-Message-State: AFeK/H1WDcpeo4eNhivCdv2HSnpeAEyQejXbBfIOGnt8hqd8S4muTjRsxCZBFQJCsJESWSaJDh5nGC5SVrLTKw== X-Received: by 10.13.235.151 with SMTP id u145mr13436261ywe.19.1490537776264; Sun, 26 Mar 2017 07:16:16 -0700 (PDT) MIME-Version: 1.0 Received: by 10.37.55.150 with HTTP; Sun, 26 Mar 2017 07:16:15 -0700 (PDT) Received: by 10.37.55.150 with HTTP; Sun, 26 Mar 2017 07:16:15 -0700 (PDT) In-Reply-To: <201703250516.26362.luke@dashjr.org> References: <201703220847.31303.luke@dashjr.org> <30FB8B13-135D-4905-B1B4-76D79341CA02@mattcorallo.com> <201703250516.26362.luke@dashjr.org> From: Chris Pacia Date: Sun, 26 Mar 2017 10:16:15 -0400 Message-ID: To: Luke Dashjr , Bitcoin Protocol Discussion Content-Type: multipart/alternative; boundary=94eb2c06c390adbc4e054ba2de81 X-Spam-Status: No, score=-1.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, HTML_MESSAGE, RCVD_IN_DNSWL_NONE, RCVD_IN_SORBS_SPAM 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] Fraud proofs for block size/weight 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: Sun, 26 Mar 2017 14:16:18 -0000 --94eb2c06c390adbc4e054ba2de81 Content-Type: text/plain; charset=UTF-8 On Mar 25, 2017 12:17 AM, "Luke Dashjr via bitcoin-dev" wrote: Any ideas? :/ Can't the size be aggregated up the tree such that each midstate hash is the hash of branches below plus the agreegate of the sizes below. This would make the root hash(left + right + size/weight) and the proof would just be the preimage. --94eb2c06c390adbc4e054ba2de81 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable


On Mar 25, 2017 12:17 AM, "Luke Dashjr via bitcoin-dev"= <bitcoin-dev@lists.linuxfoundation.org> wrote:
=C2=A0Any ideas? :/

Can't the s= ize be aggregated up the tree such that each midstate hash is the hash of b= ranches below plus the agreegate of the sizes below.=C2=A0

This would make the root =C2=A0hash(left= + right + size/weight) and the proof would just be the preimage.



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