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| author | Jorge Timón <jtimon@jtimon.cc> | 2016-11-17 01:06:45 +0100 |
|---|---|---|
| committer | bitcoindev <bitcoindev@gnusha.org> | 2016-11-17 00:06:47 +0000 |
| commit | 90fd53da8aef6f5c8ece0560c680a0f9801f4db4 (patch) | |
| tree | 81fd993ef04da70395831e0662b1b7e83917f030 | |
| parent | 271422f249a364e60711e97d644cac898ddb97b1 (diff) | |
| download | pi-bitcoindev-90fd53da8aef6f5c8ece0560c680a0f9801f4db4.tar.gz pi-bitcoindev-90fd53da8aef6f5c8ece0560c680a0f9801f4db4.zip | |
[bitcoin-dev] BIP30 and BIP34 interaction (was Re: [BIP Proposal] Buried Deployments)
| -rw-r--r-- | b5/98e915d0023d23c4b6461f96c60d1d57255e67 | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/b5/98e915d0023d23c4b6461f96c60d1d57255e67 b/b5/98e915d0023d23c4b6461f96c60d1d57255e67 new file mode 100644 index 000000000..953c54e83 --- /dev/null +++ b/b5/98e915d0023d23c4b6461f96c60d1d57255e67 @@ -0,0 +1,83 @@ +Return-Path: <jtimon@jtimon.cc> +Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org + [172.17.192.35]) + by mail.linuxfoundation.org (Postfix) with ESMTPS id 581F47A9 + for <bitcoin-dev@lists.linuxfoundation.org>; + Thu, 17 Nov 2016 00:06:47 +0000 (UTC) +X-Greylist: whitelisted by SQLgrey-1.7.6 +Received: from mail-vk0-f41.google.com (mail-vk0-f41.google.com + [209.85.213.41]) + by smtp1.linuxfoundation.org (Postfix) with ESMTPS id BF2DA24C + for <bitcoin-dev@lists.linuxfoundation.org>; + Thu, 17 Nov 2016 00:06:46 +0000 (UTC) +Received: by mail-vk0-f41.google.com with SMTP id w194so128854335vkw.2 + for <bitcoin-dev@lists.linuxfoundation.org>; + Wed, 16 Nov 2016 16:06:46 -0800 (PST) +DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; + d=jtimon-cc.20150623.gappssmtp.com; s=20150623; + h=mime-version:from:date:message-id:subject:to:cc; + bh=7Nm9tFQdT87r9r+hOzwXZMQbdz3xZAlpL+5EdIjnQy0=; + b=R1JfwqTGRDkqJZcDVfOY53jgjMkRzQprtpnIiVbvUP6rJ4AZHoam7vVPr5DZBqMd78 + VrNlYMlGEInUT6Ch80ohFeszvHKZ+glfnYqrV+OrjeywSAacNBkBBo/553/W+maiohVa + 9u+uc5r7+o/K4ZTj7RcVv0N3Qjo3Apgzn7gSaO32mUX6uvjTxJXfPRnJyHCtaQs7E9wt + 4WSgaunGQ4FhULmAOVx5nN5xth39P3qNZB1tLrMYnm86fs5wRIZr3juSMKuw4PbXmqGe + Wd0IXEnUdP4NRJbJsnKqP3uQ2zv0lEx4e9yxjPpBb1yDsKlRL4NA6X6efzdzBt88X+/D + PPmA== +X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; + d=1e100.net; s=20130820; + h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; + bh=7Nm9tFQdT87r9r+hOzwXZMQbdz3xZAlpL+5EdIjnQy0=; + b=Li/hRUEq9XMDt8iEMc+c78vE4fyp+1Fcp8Cbs8AIztN/3Kuw/3PIs6mPLAmoB9ODco + VH9wnSdft7pkyV43VYBNpbF0BKpVsFi2IKz8K1hJEBQNrfXrHGr6t9jRCIKrSDTEptRk + jSuWVMci7zdvcE7jvO6Lr3uNDzU7+GyuMZ3ygY1e+VsYtjKAFVpSk5Of7gKZrNBxmIcy + JBiSHdn5+T2VpdPrUt8i1qjMAcbLtPeUC7+byaGNnWB/XnyGCxyKbb1gK9368IB2mIQ9 + zJ2GJ2GhPfELtYzrf5CIqKYBO0sSTvKPnSJGsXisrL32dMjXIeg0l/CpMjZ9Sbd7x5nU + X/UQ== +X-Gm-Message-State: AKaTC02N+FbFyUYFLdQ+4OQjjdOtNLnSym2bRvImLTs/rom5TzN4Tmnr1Q8m157YiDNOP/1whmdkvUcIpu/1lw== +X-Received: by 10.31.70.193 with SMTP id t184mr110952vka.102.1479341205882; + Wed, 16 Nov 2016 16:06:45 -0800 (PST) +MIME-Version: 1.0 +Received: by 10.31.41.15 with HTTP; Wed, 16 Nov 2016 16:06:45 -0800 (PST) +From: =?UTF-8?B?Sm9yZ2UgVGltw7Nu?= <jtimon@jtimon.cc> +Date: Thu, 17 Nov 2016 01:06:45 +0100 +Message-ID: <CABm2gDr2-MCiaFFjgUFP5Xc0fQfuqJ3=ZkrzjHqmOiwRZ50CBw@mail.gmail.com> +To: Eric Voskuil <eric@voskuil.org> +Content-Type: text/plain; charset=UTF-8 +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 +Cc: Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>, + Thomas Kerin <me@thomaskerin.io> +Subject: [bitcoin-dev] BIP30 and BIP34 interaction (was Re: [BIP Proposal] + Buried Deployments) +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: Thu, 17 Nov 2016 00:06:47 -0000 + +On Thu, Nov 17, 2016 at 1:00 AM, Eric Voskuil <eric@voskuil.org> wrote: +> This is a misinterpretation of BIP30. Duplicate transaction hashes can +> and will happen and are perfectly valid in Bitcoin. BIP34 does not +> prevent this. + +Sorry for moving the topic, but isn't duplication of tx hashes +precisely what BIP30 prevents? +That was my undesrtanding but should read it again. +Since regular txs take inputs, the collision is extremely unlikely +(again, this is my understanding, please correct me when wrong), the +worrying case is coinbase txs (which don't have input to take entropy +from). By introducing the committed height, collisions on coinbase txs +are prevented too. + +If I'm wrong on any of this I'm more than happy to learn why. + |