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| author | Tom Harding <tomh@thinlink.com> | 2017-01-24 10:52:27 -0800 |
|---|---|---|
| committer | bitcoindev <bitcoindev@gnusha.org> | 2017-01-24 18:52:48 +0000 |
| commit | 80e2c2367577b4c79266066d97980c4a7be1c5d5 (patch) | |
| tree | 0b5ce9f26a42d64b53caf6bf7a9ab18bf1a7a3a6 | |
| parent | 4f52a75db24cb4e8846fbbf35347ba1d0d16eba9 (diff) | |
| download | pi-bitcoindev-80e2c2367577b4c79266066d97980c4a7be1c5d5.tar.gz pi-bitcoindev-80e2c2367577b4c79266066d97980c4a7be1c5d5.zip | |
Re: [bitcoin-dev] Anti-transaction replay in a hardfork
| -rw-r--r-- | 18/09b2b0b263fc251f73df1a157424f6f01303e3 | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/18/09b2b0b263fc251f73df1a157424f6f01303e3 b/18/09b2b0b263fc251f73df1a157424f6f01303e3 new file mode 100644 index 000000000..c8f2dcffc --- /dev/null +++ b/18/09b2b0b263fc251f73df1a157424f6f01303e3 @@ -0,0 +1,102 @@ +Return-Path: <tomh@thinlink.com> +Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org + [172.17.192.35]) + by mail.linuxfoundation.org (Postfix) with ESMTPS id 2A8FCAB9 + for <bitcoin-dev@lists.linuxfoundation.org>; + Tue, 24 Jan 2017 18:52:48 +0000 (UTC) +X-Greylist: whitelisted by SQLgrey-1.7.6 +Received: from mail-pf0-f173.google.com (mail-pf0-f173.google.com + [209.85.192.173]) + by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 9AB01237 + for <bitcoin-dev@lists.linuxfoundation.org>; + Tue, 24 Jan 2017 18:52:47 +0000 (UTC) +Received: by mail-pf0-f173.google.com with SMTP id 189so51997637pfu.3 + for <bitcoin-dev@lists.linuxfoundation.org>; + Tue, 24 Jan 2017 10:52:47 -0800 (PST) +DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; + d=thinlink-com.20150623.gappssmtp.com; s=20150623; + h=subject:to:references:from:message-id:date:user-agent:mime-version + :in-reply-to:content-transfer-encoding; + bh=CKYeJeDNersiplA/K6FAhjBH/m4mMZ9Jj1XNUWhxfXk=; + b=0exnBByZkLs/lRKey45WU+2A9CoaBwYJPDdgvkOdJY/e3PREKVVRY4Yewp2MqmY+/E + DxDlbrHxavMei6BPQ0Wmx/oapkbrSb9I6UoI0gSiDOE6nfr7Rpi/SZqduS6AXBrMhqEY + 8iKQRpqNAY0vQJafgqkIbIUQU2Tjxqxj446JfKaWz4RW47K/u8KOpw+EyLd6UILhOjhb + my32xicGEZOpSV+95OZHRvtd8l1t9d6447qlLfot0vnmyrHIbiujdG662a+u8RHMBWfm + hIz8UWO/Coysr6wS8iAuZ4NRJmL82PqxEqE/8I3JGMKAXVuAMyof96PhVYQjqHXhxiDX + aa5A== +X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; + d=1e100.net; s=20161025; + h=x-gm-message-state:subject:to:references:from:message-id:date + :user-agent:mime-version:in-reply-to:content-transfer-encoding; + bh=CKYeJeDNersiplA/K6FAhjBH/m4mMZ9Jj1XNUWhxfXk=; + b=tSnnoMLnDcpcJtup/8+jqyaRESWECalzntKb/RwvKtt78oUvaNLV5fto6AL5afgiUm + S4rGgY7x0BHtizFRIJsxUR1Ky8Emw3KE7WBS33LbLPIx/1zmaIvaGLzu9uyBEiDlLNKm + V+5gtcEhFY9GDpY1GYg98l2He4TqSW724NKBWMVgnR2EZrb2LTZ6SDMLHtS2z2zbe3FN + 55zsthpCsceyb8Hz6+z+4rUdWt7UfwaXSQ8aDgczIT10Uj2EQ1sGG03VPBHVdwh3jKes + 41yZos+HU/fr4vuYNpg7cQ9wX10LXZlI+LuisnpQyn2PwusAE+byTjLwv0QBadzKmc+d + w5Bw== +X-Gm-Message-State: AIkVDXLkB1CC5QugJh21GgoVAth+Y+WmgzGV/Lxiy5GAzWkg+v2tzSzg5ynUpTSnRtFIml/k +X-Received: by 10.99.167.10 with SMTP id d10mr41294258pgf.19.1485283962254; + Tue, 24 Jan 2017 10:52:42 -0800 (PST) +Received: from [192.168.1.89] (99-8-65-117.lightspeed.davlca.sbcglobal.net. + [99.8.65.117]) by smtp.googlemail.com with ESMTPSA id + a25sm7472484pgd.26.2017.01.24.10.52.40 + (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); + Tue, 24 Jan 2017 10:52:40 -0800 (PST) +To: bitcoin-dev@lists.linuxfoundation.org, Johnson Lau <jl2012@xbt.hk> +References: <A182F080-F154-4F05-B2F1-21B90E469267@xbt.hk> +From: Tom Harding <tomh@thinlink.com> +Message-ID: <efad941b-ce3e-1c98-ca5b-51da66badc6c@thinlink.com> +Date: Tue, 24 Jan 2017 10:52:27 -0800 +User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 + Thunderbird/45.6.0 +MIME-Version: 1.0 +In-Reply-To: <A182F080-F154-4F05-B2F1-21B90E469267@xbt.hk> +Content-Type: text/plain; charset=windows-1252 +Content-Transfer-Encoding: 7bit +X-Spam-Status: No, score=-1.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, + DKIM_VALID, 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 +X-Mailman-Approved-At: Tue, 24 Jan 2017 20:06:41 +0000 +Subject: Re: [bitcoin-dev] Anti-transaction replay in a hardfork +X-BeenThere: bitcoin-dev@lists.linuxfoundation.org +X-Mailman-Version: 2.1.12 +Precedence: list +List-Id: Bitcoin Protocol Discussion <bitcoin-dev.lists.linuxfoundation.org> +List-Unsubscribe: <https://lists.linuxfoundation.org/mailman/options/bitcoin-dev>, + <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=unsubscribe> +List-Archive: <http://lists.linuxfoundation.org/pipermail/bitcoin-dev/> +List-Post: <mailto:bitcoin-dev@lists.linuxfoundation.org> +List-Help: <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=help> +List-Subscribe: <https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev>, + <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=subscribe> +X-List-Received-Date: Tue, 24 Jan 2017 18:52:48 -0000 + +On 1/24/2017 6:33 AM, Johnson Lau via bitcoin-dev wrote: +> 9. If the network characteristic byte is non-zero, and the existing +> network characteristic bit is set, the masked version is used to +> determine whether a transaction should be mined or relayed (policy change) + +Johnson, + +Your proposal supports 8 opt-out bits compatible with may earlier +description: +https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2016-July/012917.html. + +If the existing network really wants to play along, it should execute a +soft fork as soon as possible to support its own hard-fork opt-out bit +("network characteristic bit"). It is totally inadequate for a new +network to rely on non-standardness in the existing network to prevent +replay there. Instead, in the absence of a supported opt-out bit in the +existing network, a responsible new network would allow something that +is invalid in the existing network, for transactions where replay to the +existing network is undesirable. + +It is an overreach for your BIP to suggest specific changes to be +included in the new network, such as the specific O(n^2) fix you +suggest. This is a matter for the new network itself. + + + |