From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1XpW49-00014y-6v for bitcoin-development@lists.sourceforge.net; Sat, 15 Nov 2014 05:38:33 +0000 Received-SPF: pass (sog-mx-1.v43.ch3.sourceforge.com: domain of haskoin.com designates 217.115.119.205 as permitted sender) client-ip=217.115.119.205; envelope-from=root@haskoin.com; helo=galactica.xeno-genesis.com; Received: from galactica.xeno-genesis.com ([217.115.119.205]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.76) id 1XpW47-0002fN-QO for bitcoin-development@lists.sourceforge.net; Sat, 15 Nov 2014 05:38:33 +0000 Received: from localhost (localhost [127.0.0.1]) by galactica.xeno-genesis.com (Postfix) with ESMTP id 2A89413C6B6A for ; Sat, 15 Nov 2014 04:43:48 +0000 (GMT) X-Virus-Scanned: Debian amavisd-new at haskoin.com Received: from galactica.xeno-genesis.com ([127.0.0.1]) by localhost (galactica.xeno-genesis.com [127.0.0.1]) (amavisd-new, port 10024) with LMTP id Ftyn0wjS0lDL for ; Sat, 15 Nov 2014 04:43:45 +0000 (GMT) Received: from [192.168.1.57] (c-76-102-12-150.hsd1.ca.comcast.net [76.102.12.150]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: xeno) by galactica.xeno-genesis.com (Postfix) with ESMTPSA id 547C113C472C for ; Sat, 15 Nov 2014 04:43:45 +0000 (GMT) Message-ID: <5466D9FF.3030105@haskoin.com> Date: Fri, 14 Nov 2014 20:43:43 -0800 From: Jean-Pierre Rupp Organization: Haskoin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0 MIME-Version: 1.0 To: bitcoin-development@lists.sourceforge.net References: <20141106213215.GA12918@savin.petertodd.org> <545BF0C2.3030201@bluematt.me> <545BFAD6.1000504@riseup.net> <20141106232649.GD26859@savin.petertodd.org> <545C0617.7020300@riseup.net> In-Reply-To: <545C0617.7020300@riseup.net> OpenPGP: id=310A8A5B Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="DiJxDPkJPopa8CFIbABlLMLQmBlkLWDnc" X-Spam-Score: -1.5 (-) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for sender-domain -0.0 SPF_PASS SPF: sender matches SPF record X-Headers-End: 1XpW47-0002fN-QO Subject: Re: [Bitcoin-development] The difficulty of writing consensus critical code: the SIGHASH_SINGLE bug X-BeenThere: bitcoin-development@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 15 Nov 2014 05:38:33 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --DiJxDPkJPopa8CFIbABlLMLQmBlkLWDnc Content-Type: multipart/mixed; boundary="------------020502080400090805090308" This is a multi-part message in MIME format. --------------020502080400090805090308 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Jean-Pierre Rupp from Haskoin here. I support a hard fork to fix consensus bugs. The Bitcoin protocol should= eventually get to a state where it is documented in a clear and understa= ndable fashion. Bugs are bugs, and are the enemy. We should not attempt= to live with them. We should be opening a process of thoroughly documen= ting and reparing consensus bugs on a separate branch, and eventually sch= edule a hard fork. There are two good things that will come out of that: 1. Known bugs will be gone, and 2. We will have a process in place to get rid of future bugs in eventual = future hard forks. We do not need to become paranoid about the ramifications of a hard fork,= or how it will open the door for unwanted changes in the protocol. We a= re discussing about removing bugs, and bugs that could be used to exploit= the network in ways that may not be immediately obvious. There are 144 blocks generated per day by groups of miners that are mostl= y identified. It is not going to be a titanic task to get consensus from= the main mining pools on fixing this at the mining level. We must addre= ss how the fixes for some of these bugs affect other types of software su= ch as wallets. I can think that fixing the bug where OP_CHECKMULTISIG po= ps an extra value from the stash could be more traumatic, since it requir= es anything that creates and validates multi-signature transactions to ch= ange the way it works. Hardware wallets could be impacted. But most of = the consensus bugs would not affect the way the vast majority of bitcoin = transactions that are currently created. Therefore it should not be trau= matic at all for users, but only really affect mining pools, who would on= ly need to be convinced to upgrade their bitcoind well in advance, which = seems to me that it is not an issue at all. We should not compare doing a Bitcoin hard-fork with doing something like= deploying IPv6 world-wide or enforcing TLS and SPF on every SMTP connect= ion. We should not conflate Bitcoin with other network protocols. The B= itcoin protocol is actually relatively easy to upgrade at this point. Le= t's take advantage of this fact. On 06/11/14 15:36, Justus Ranvier wrote: > Because Bitcoin has a extra consensus requirements, requirements which > are really rare in engineering, the necessity of fixing bugs is even > greater. --=20 Be Happy :) --------------020502080400090805090308 Content-Type: application/pgp-keys; name="0x310A8A5B.asc" Content-Transfer-Encoding: quoted-printable Content-Disposition: attachment; filename="0x310A8A5B.asc" -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1 mQENBFOTIuMBCADBFllGqwyErvrlzSAW8sxKzH834XFtSR13VzGXgERIiWQrvGGD iIIDkOgZmQ4jGm5eT5aGP8fC9CvK301rXDHzZ/B8wFfBfN2OR3AU1C/q4NUHBGF0 q13Fey7jNaLOOVj+i1EJC1H/fIMsiqcNX7RJsrYX2dv6m2xJjZh8JG+RAYZGVlqU k1rlVfz4Lic3uNNj1r3jOqJuJgxU8PIwVticcBnMrKMChivxfSlsp7JThHSF8KLW 2+LcCOfNsmrV/KkGpG4DpKWj+XQvEYCjD7Iwuouyg+Uo6691G+uCNd8P1sjRgP8g hMNqjJ/HzhqI44UHTgBNBR9/N0WolgUcY1mtABEBAAG0K0plYW4tUGllcnJlIFJ1 cHAgKHhlbm9nKSA8cm9vdEBoYXNrb2luLmNvbT6JATsEEwECACUCGwMGCwkIBwMC BhUIAgkKCwQWAgMBAh4BAheABQJTzm/gAhkBAAoJEF1L4IYxCopbFjgH/Ajlfmdw XzQn08DEOLT4TVkqnrfncQAO5OARd8RgBiE/RxNrfMmo/lpyTGWKRVqTQlGMx6+j 89eRDZQAo4g1uOqq1IAAF/y5EELBSxlUkF2lqV+L8PH1I5rnBfMZ8z7VzQbjJaqp L2s9eFCMPjtR2f3PbJ/OxzWjJLD+dE5s8oPgcrrCui9/6gOw8hq7Pca7Fm3X46yd oI1wIr8jADx3BPBahMfMPnXj7iCwu/g8UAwQE1HoF1PojuXHy/UzcZDfoPPJLsHd 5yRg4lyRnLC/bpFahWRyq8AqEpv867HZFi4J0QDvezib58WvYXua0einyzJ9j+sL x7zffjOuqDuzsQOJATgEEwECACIFAlOTIuMCGwMGCwkIBwMCBhUIAgkKCwQWAgMB Ah4BAheAAAoJEF1L4IYxCopbfXAH+wb+LDyuoWgGs7hsV5HTOWhmJNNXJBOUpbi4 JG28JQXigUr0wZ1TQ7b10iLx83VCerB7cVdu1dJzNotNcj6XIw8eVBmnSw0oJFxs 8RQAJnNKtAc8Ibj+d4bLHVSww08Da2Filnj9j67N9hKdS5Nso9DbNxENDz3oOJeq yMwjWoYhDTxgnprIvw9uH8HdodmfNPynEQRfTN01iE8w2QHkRQWjRtBCznHHYVDU JqoPesScdTsm8KeI0gt8tVCBqzUG9AQcQniV/Iq+agWrLqxiabOk3XLQuDeq3xDj b7WHluG3jvkowpa5BcNOOSwxPOiUh5MwlVEST/b3mnHbTeF+Q7y0K0plYW4tUGll cnJlIFJ1cHAgPGpwaWVycmVAeGVuby1nZW5lc2lzLmNvbT6JATgEEwECACIFAlPF QqgCGwMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEF1L4IYxCopb5BAH/2Td qlfCkCj/w9kLsiZDs6xaC12hSH3ZrBJXtGQcO9kfJHRZagi6+4lDs2huzcI7aDN7 4x1pOJxiqEeZIDhxVrqTedaxg8B74xyB9pmtlAOoM+Sern6P90P5IhKENqLA2Gm7 GWy/TqO8+yaTo8fAG/6fFz1PE/WBHhT2VuIWtX2TnE0wrntmmaw7guhvjxXW9tww z+txJBl/QgQt3C1WlrccqKISz2W3kLTV3VUr4MhMoMx/VIBYT/Mxy+z1ZtZxImQ4 kXXzELpuu2Pgj67GGjWf7Bx0PEmNyaVT7WtS72GhYn/+yu28yA0aBEmx7fKOZ1cD 05ax0Xm3wTNqNkK5//+0KEplYW4tUGllcnJlIFJ1cHAgPHJvb3RAeGVuby1nZW5l c2lzLmNvbT6JATgEEwECACIFAlPFQpsCGwMGCwkIBwMCBhUIAgkKCwQWAgMBAh4B AheAAAoJEF1L4IYxCopbdpsH/0tZqacwo9lNg/RPfKp+0BNRIKB5ttyj0D3IjSD6 sMhFiZef5gLn7FzhYm5+gL9oypA5TedIraA0kh7Wz//kR34KDht9Nf7hE6w5gl6W Q6NFKFcNh5bsGuyIPB7i5FhLKBqd6q56w8dXe8zlRziFy9XLkF1D9Guzm09fJfUO RvrsOOXb5mc1ViL1tkWts1nhoYgGslwE18d5+SJFgDTFXSya2YHjER0j06qlIIuz juMssvRtqiMxU77nZXFJaf3/cWg1JTmOX7A9Fd4f+ZHVMeianL0wsMR1wxg8SwRD nDaGKEHuyHUWA/zR7TzY/u9pGCCIfpr1J6qSCk36TnAIOrW0KEplYW4tUGllcnJl IFJ1cHAgKHhlbm9nKSA8cm9vdEB4ZW5vZy5tZT6JATgEEwECACIFAlPxLLwCGwMG CwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEF1L4IYxCopbupoH/jqcDbrDFPVN mht0vlKlYjg6mSkGaK3Pa3XyFgzl3KoEL3Fqxv5twbl7ttdgM0KebyQ2i4BxyZg8 rkqn0wBZA/SbMb56hrwpN7Z2RuwF2ZKzNHSm84AufwiSxZXOctHk5RJUHGFt69eG p+kg/J+/y5JImlykzWC+dec4IWpqwrHyo9/o07bSwHpVa+YpG/akQeOBi08Uj7lD MN9F17EyxBN8NCfbpoc57Zvs2Vvyt8oJv2zv14vdsEJ5TcdD6D0lsa5RrINXbqms IadHJhwUFJN2UzDSPCkMHwUfLIeR/lG22zZWr2PejfKcJmjoEdrPRuSI1LVGNgRK 3lgox8TpJEG0KkplYW4tUGllcnJlIFJ1cHAgPGplYW4tcGllcnJlQGhhc2tvaW4u Y29tPokBOAQTAQIAIgUCVAW1YAIbAwYLCQgHAwIGFQgCCQoLBBYCAwECHgECF4AA CgkQXUvghjEKiltgqQf/TLXfM2iI/zI0uGmAE2I9ufQ42oQt/iUwJRa+fzWmlYy3 PdAO8GSI/sRsENpDXxEJVAsxy84t1uU6+17FPbK7rM57PAMgioUqFxUlKkKzlbqH X6U33X8boTCnVlbjmQkfDehr/9O6V54rlsH3L3iqTm0OkbEamPoyAPv1tV0tMvhQ wSkz0JVt3tT2tBn4vVs1BsTD8tEcOiycx/DAP82JDdfdlo9c1iuesEl3C86DI3cv CgYvUzHQNvqF5XdGDYgkZjr+lDDXuwWzOzISMs/Y3D/91AdXfTbVDfXRhky/rx7b 3WJVFREikvOCvYhzipzFTLwfGsfW0QsWFtmAxBqtOLkBDQRTkyLjAQgAqV5sZVMb xmi2msnwe+o1QVI2YWdavyFErnfwq6JAngnT8ISYNN58Gfxo96n6bpWoxiExLR3q hg326gjVXn35UielGA9IiVbDDvL2GjFRXkEBpVrzJH0up8h+JRoV5dbBRWFrdBpv KMC/80gjpdaoyFT4NFrj9e+SnghEzYcTvhcH0qxvJfqsYks7zz1BA2TnF8T7O0AA Vn54A7yW960oGfqHh6SX022YKwrmY1c8dXoX7wRorP2KaB5oq3HNjFrg0X+y+xFy QSMhQbxIIVh17z+J3hJJe6Rfrxa4MDVAMCr4ONSd5jzSvn3UgU03uvEBEmY+xqFK evrKyuIMTIQXcQARAQABiQEfBBgBAgAJBQJTkyLjAhsMAAoJEF1L4IYxCopbNzcH /AhfYNqMvK660jjLlMN6wTpsIXnfYjSt8MN5+zEyOJYYUCfrqfc5edSxT87EhuII i4JiiR9lDMFULINumuKvLkU4CilXo/AeKqEsXnoCxnRFIjDMLIU5uCVchq++DjSi DsDHGwhRxjkiwoWnR2+uN12Lbjh/gyoW8E8kS2vhnUOTkbJNweZpynJlnfwppp5d wLxuWIZf3oJobc7mafygER3tTYMewe7fWgjs/U25izgtKPfPFi26c00e+SkiptW9 IvUdaucP6Dw2rwC+nynJZ1caX8vjwASU7nJIVaWFW0HZlcUBaf1+RNUuGgZu/MGL grcfowPvctIHtOiZrfKO74Y=3D =3DKj8k -----END PGP PUBLIC KEY BLOCK----- --------------020502080400090805090308-- --DiJxDPkJPopa8CFIbABlLMLQmBlkLWDnc Content-Type: application/pgp-signature; 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