From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sog-mx-2.v43.ch3.sourceforge.com ([172.29.43.192] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1UJTxE-0004tm-Ab for bitcoin-development@lists.sourceforge.net; Sat, 23 Mar 2013 19:18:12 +0000 Received-SPF: pass (sog-mx-2.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.215.47 as permitted sender) client-ip=209.85.215.47; envelope-from=gmaxwell@gmail.com; helo=mail-la0-f47.google.com; Received: from mail-la0-f47.google.com ([209.85.215.47]) by sog-mx-2.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1UJTxD-0006hT-D3 for bitcoin-development@lists.sourceforge.net; Sat, 23 Mar 2013 19:18:12 +0000 Received: by mail-la0-f47.google.com with SMTP id fj20so9049663lab.6 for ; Sat, 23 Mar 2013 12:18:04 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.112.26.202 with SMTP id n10mr3337841lbg.15.1364066283913; Sat, 23 Mar 2013 12:18:03 -0700 (PDT) Received: by 10.112.96.164 with HTTP; Sat, 23 Mar 2013 12:18:03 -0700 (PDT) In-Reply-To: References: <201303231709.07059.luke@dashjr.org> <201303231743.59510.luke@dashjr.org> Date: Sat, 23 Mar 2013 12:18:03 -0700 Message-ID: From: Gregory Maxwell To: Jeff Garzik Content-Type: text/plain; charset=UTF-8 X-Spam-Score: -1.6 (-) 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 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (gmaxwell[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-Headers-End: 1UJTxD-0006hT-D3 Cc: bitcoin-development@lists.sourceforge.net Subject: Re: [Bitcoin-development] Upcoming network event: block v2 lock-in 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, 23 Mar 2013 19:18:12 -0000 On Sat, Mar 23, 2013 at 10:47 AM, Jeff Garzik wrote: > On Sat, Mar 23, 2013 at 1:43 PM, Luke-Jr wrote: >> Not for producing coinbases (where BIP 34 is implemented). > Sure, that is largely the pool server layer. But it is misleading to > imply that bitcoind is nowhere in the stack. You're both right: BIP34's addition of the height is implemented in the coinbase generator, so for almost everyone the Bitcoind version is not very relevant for that. Rejection of invalid chains, however, is in the Bitcoin daemon. Upgrading bitcoind alone should be sufficient to prevent the creation of forks, though if miners would like to avoid losing income they must update _both_ so that they don't create invalid blocks or mine on invalid forks.