From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 1813F268 for ; Fri, 13 Nov 2015 21:53:58 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from mail-io0-f179.google.com (mail-io0-f179.google.com [209.85.223.179]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id B70BBF5 for ; Fri, 13 Nov 2015 21:53:57 +0000 (UTC) Received: by ioc74 with SMTP id 74so110893187ioc.2 for ; Fri, 13 Nov 2015 13:53:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=9KnaovwLCSUabZ40TkeK8CbcCQTPVrN0IiIoWt/hTX4=; b=uWIL6kW0YZXTlUV/tkP0wsvSJGkeKEyISt7MLW6ZKLZ3wkxvzI9dBZ5o28OGKK2As0 WCsQoty5OJjq48VO8yRJAAEq6T4ryEJrAcqK9Jn6YjJ5xTuCAAfSgHvqK/p0EgdiEROs oSTDvtGoZfv9ZYg+yKnBq+V/e8bLIQUa6ikL2E1N17Jx4bSG3sbLMg7zg19xb6OpeSaN aIsmshMy9/R4nKPJiK/q8LVpSoMG4uDFGbldw0M5MQqaNUEIYtaTLQrLLumG2Tm1Kal3 NugM+ogRgX3e4SypQcSVFOZl9hENhUAkzSOPQ9eNRsbhlD0hdzeuoJlYxaWvQn3tEDwS m6Pg== MIME-Version: 1.0 X-Received: by 10.107.4.83 with SMTP id 80mr23632615ioe.150.1447451637261; Fri, 13 Nov 2015 13:53:57 -0800 (PST) Received: by 10.107.192.199 with HTTP; Fri, 13 Nov 2015 13:53:57 -0800 (PST) In-Reply-To: <1581446.3ZPnhFUSFq@1337h4x0r> References: <1581446.3ZPnhFUSFq@1337h4x0r> Date: Fri, 13 Nov 2015 21:53:57 +0000 Message-ID: From: Gregory Maxwell To: xor@freenetproject.org Content-Type: text/plain; charset=UTF-8 X-Spam-Status: No, score=-2.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, 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 Cc: Bitcoin Dev Subject: Re: [bitcoin-dev] Contradiction in BIP65 text? X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Development Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 13 Nov 2015 21:53:58 -0000 On Fri, Nov 13, 2015 at 9:48 PM, xor via bitcoin-dev wrote: > BIP65 [1] says this: >> Motivation >> [...] >> However, the nLockTime field can't prove that it is impossible to spend a >> transaction output until some time in the future, as there is no way to >> know if a valid signature for a different transaction spending that output >> has been created. > > I'd interpret "can't prove that it is impossible to spend" = cannot be used > for freezing funds. > > Then later, at "Motivation", it says: >> Freezing Funds >> >> In addition to using cold storage, hardware wallets, and P2SH multisig >> outputs to control funds, now funds can be frozen in UTXOs directly on the >> blockchain. > > This clearly says that funds can be frozen. > Can the BIP65-thing be used to freeze funds or can it not be? > > Notice: I am by no means someone who is able to read Bitcoin script. I'm > rather an end user. So maybe I'm misinterpreting the document? > I'm nevertheless trying to provide a "neutral" review from an outsider who's > trying to understand whats new in 0.11.2. > You may want to discard my opinion if you think that BIP65 is aimed at an > audience with more experience. The first text is explaining nlocktime without BIP65 in order to explain the reason for having BIP65.