Return-Path: <gavinandresen@gmail.com> Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 5D790F52 for <bitcoin-dev@lists.linuxfoundation.org>; Fri, 5 Feb 2016 20:51:11 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from mail-lf0-f45.google.com (mail-lf0-f45.google.com [209.85.215.45]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 6727B204 for <bitcoin-dev@lists.linuxfoundation.org>; Fri, 5 Feb 2016 20:51:10 +0000 (UTC) Received: by mail-lf0-f45.google.com with SMTP id m1so65839636lfg.0 for <bitcoin-dev@lists.linuxfoundation.org>; Fri, 05 Feb 2016 12:51:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=6QfHwMPwtU20GR+n0INFnylh1rm3mV0oaIrtN0qrN2I=; b=cjPvzp6+Q8UrQJJnqjOjlqsMDffEhIh5CRmSgVCSnv8k6fhfLIJ2DncmkspbL6ZjEr v1/0LEAeX11cp/TpufOQQpzpLxa634D/eCG29nA6yIgXcJOWR0Zh5KUu0gtSBhbzgH2H phKbt5j4witz2JLJXTC/UGT+0kn0g2Tk4WbNM01K3eZAYiFMpvCajfSYE7XkjU6I+Zg/ VEAvO1PWChDvi0dtrRuf1PgnS6E+ivUpqKfV5sb09+14KJApyjqY91cMzXHkdHr7NIf9 JrNaeufBAGSVDsH2Ivhkcd4rpE1zaYEYSDZKzQLzQYTkY/4neWleHeaT2dRD5IXw1ssV d4Fw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:date:message-id:subject:from:to :content-type; bh=6QfHwMPwtU20GR+n0INFnylh1rm3mV0oaIrtN0qrN2I=; b=a4999QsgoPKCpTn2b250mLpIjt7VVyNdUMymTvoAagM1Xeltv7cFULpA5iQmK9Hdnn tuqQL2nUa5PwRR3U/b6pUl1PZkF6NeJMWsy9CmJ8T1XOGJquWi2WnxutjTfrSjOL9ZB5 SSIA5hQAAbb/YkN6zd/vlXQSAVE4GyuUSFTGlC4srrKVgo7gRFQkHRSbrx2WUdyd5iFa RLqTD1KHpMEAnRAOjy4p1+5L9ee6A33xsjmEp7KI6V8VuxItEnz5y+gLxxN7O4aPGkC1 RQsbJyIbmY1ZZ8WDuyIvGV4O3r3sUd/jT3vHV6mHnAxHc13YxNvjlOirEbGYQBt5QSjO lIMQ== X-Gm-Message-State: AG10YOTMfqdVKuGE0U9pUq6P7aQabnJFMhgD0WQQL5jNrcEjBXtdLELgdxMST6dG+igOrylveSfSrDyaPHl8eQ== MIME-Version: 1.0 X-Received: by 10.25.165.133 with SMTP id o127mr6840898lfe.105.1454705468764; Fri, 05 Feb 2016 12:51:08 -0800 (PST) Received: by 10.25.206.68 with HTTP; Fri, 5 Feb 2016 12:51:08 -0800 (PST) Date: Fri, 5 Feb 2016 15:51:08 -0500 Message-ID: <CABsx9T1Bd0-aQg-9uRa4u3dGA5fKxaj8-mEkxVzX8mhdj4Gt2g@mail.gmail.com> From: Gavin Andresen <gavinandresen@gmail.com> To: Bitcoin Dev <bitcoin-dev@lists.linuxfoundation.org> Content-Type: multipart/alternative; boundary=001a11411c34b7fc19052b0c021b X-Spam-Status: No, score=-2.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org X-Mailman-Approved-At: Fri, 05 Feb 2016 21:16:42 +0000 Subject: [bitcoin-dev] BIP proposal: Increase block size limit to 2 megabytes X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Development 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: Fri, 05 Feb 2016 20:51:11 -0000 --001a11411c34b7fc19052b0c021b Content-Type: text/plain; charset=UTF-8 This has been reviewed by merchants, miners and exchanges for a couple of weeks, and has been implemented and tested as part of the Bitcoin Classic and Bitcoin XT implementations. Constructive feedback welcome; argument about whether or not it is a good idea to roll out a hard fork now will be unproductive, so I vote we don't go there. Draft BIP: https://github.com/gavinandresen/bips/blob/bump2mb/bip-bump2mb.mediawiki Summary: Increase block size limit to 2,000,000 bytes. After 75% hashpower support then 28-day grace period. With accurate sigop counting, but existing sigop limit (20,000) And a new, high limit on signature hashing Blog post walking through the code: http://gavinandresen.ninja/a-guided-tour-of-the-2mb-fork Blog post on a couple of the constants chosen: http://gavinandresen.ninja/seventyfive-twentyeight -- -- Gavin Andresen --001a11411c34b7fc19052b0c021b Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr">This has been reviewed by merchants, miners and exchanges = for a couple of weeks, and has been implemented and tested as part of the B= itcoin Classic and Bitcoin XT implementations.<div><br></div><div>Construct= ive feedback welcome; argument about whether or not it is a good idea to ro= ll out a hard fork now will be unproductive, so I vote we don't go ther= e.</div><div><br></div><div>Draft BIP:</div><div>=C2=A0=C2=A0<a href=3D"htt= ps://github.com/gavinandresen/bips/blob/bump2mb/bip-bump2mb.mediawiki">http= s://github.com/gavinandresen/bips/blob/bump2mb/bip-bump2mb.mediawiki</a></d= iv><div><br></div><div>Summary: =C2=A0</div><div>=C2=A0 Increase block size= limit to 2,000,000 bytes.</div><div>=C2=A0 After 75% hashpower support the= n 28-day grace period.</div><div>=C2=A0 With accurate sigop counting, but e= xisting sigop limit (20,000)</div><div>=C2=A0 And a new, high limit on sign= ature hashing</div><div><br></div><div>Blog post walking through the code:<= /div><div>=C2=A0=C2=A0<a href=3D"http://gavinandresen.ninja/a-guided-tour-o= f-the-2mb-fork">http://gavinandresen.ninja/a-guided-tour-of-the-2mb-fork</a= ><br><div><br></div><div>Blog post on a couple of the constants chosen:</di= v><div>=C2=A0=C2=A0<a href=3D"http://gavinandresen.ninja/seventyfive-twenty= eight">http://gavinandresen.ninja/seventyfive-twentyeight</a></div><div><br= ></div><div>-- <br><div class=3D"gmail_signature"><div dir=3D"ltr"><div dir= =3D"ltr"><div>--<br>Gavin Andresen<br></div><div><br></div></div></div></di= v> </div></div></div> --001a11411c34b7fc19052b0c021b--