Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 246DFDA6 for ; Fri, 24 May 2019 15:10:34 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from mail-it1-f178.google.com (mail-it1-f178.google.com [209.85.166.178]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id B61A9893 for ; Fri, 24 May 2019 15:10:33 +0000 (UTC) Received: by mail-it1-f178.google.com with SMTP id t184so16308865itf.2 for ; Fri, 24 May 2019 08:10:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=blockstream.io; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=GHgToC8Z4FMJAnjcul4y1U6bV7HE9lv9Q9dlBw7ZmiU=; b=ikaPTA8YOcDhvpPb1m1pNYVgUeovX6xFHB8eAwufSbdvnlUAOLD5kzKdparphy9eDD VlIGN7n4/Z7NAkqj1oGqP3Wp7KShlOUun44a/nUAPPkMKS3KUA4X/O5LTinBp3d0dlf2 j53CLwhugEQ02X4tTAiDUG+9kBTw303anIux8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=GHgToC8Z4FMJAnjcul4y1U6bV7HE9lv9Q9dlBw7ZmiU=; b=EBf0ivzOJ5hCfbyXgQTZIaeMCo/45nAN2YsjyInLgX7w0owVgUcnZOisXGaC3b+2KU Tz5abadbLZd/Y8UDckP28z4SvOS+yC3jKuBYam99gXrpNE8V1u2mzVTrcF57n52yn0Jl C+wjt5nlxaP8XBHrXsOvH/c/t2PHEHByn6CLS1+4u9tvemTpQ48Zl9PBCJytu/19LtBv 6jRe0Q7wWy6hFB/o8JTO/gLggtLUkiyJSkZPp+ZTtB1epKqlQHS6v/oMjbB4f3hwlvt2 KAKbo7bcJe3gMrVAbKFvsGb9gVyUIUsqsdwZbuKqC4YK5Sx1xXXa2yn+BezVFfOh5KAT EUQg== X-Gm-Message-State: APjAAAVbgrrx+tb2hpG1nSqRDjOX1N2Mk6ug4k0NNHctRZq7RwMLH1rH pwf2/XqIlBAWsGm09cXP1W/J0jA2XP+3u0dzc0k/jj4+ X-Google-Smtp-Source: APXvYqxEa65w/8ef8s4bL4OgDRgDLWJUoiYFZMD/L5jgWoQnybgrClWLcs1JT9s+wVk0x575EdsVKH28kmQp1GTxxhA= X-Received: by 2002:a05:6638:233:: with SMTP id f19mr6358275jaq.24.1558710632547; Fri, 24 May 2019 08:10:32 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: "Russell O'Connor" Date: Fri, 24 May 2019 11:10:21 -0400 Message-ID: To: Bitcoin Protocol Discussion Content-Type: multipart/alternative; boundary="0000000000008fa16e0589a39908" X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HTML_MESSAGE, RCVD_IN_DNSWL_NONE 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, 24 May 2019 19:07:11 +0000 Subject: Re: [bitcoin-dev] An alternative: OP_CAT & OP_CHECKSIGFROMSTACK X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 May 2019 15:10:34 -0000 --0000000000008fa16e0589a39908 Content-Type: text/plain; charset="UTF-8" On Wed, May 22, 2019 at 5:01 PM Russell O'Connor wrote: > In concert, these two operations enable: > > * Oracle signature verification, including discrete log contracts. > Jonas informs me that I've misunderstood how discreet log contracts work. The DLC signatures are not directly checked by Script and do not rely on CHECKSIGFROMSTACK. I apologize for my hasty literature review. --0000000000008fa16e0589a39908 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
On Wed, May 22, 2019 at 5:01 PM Russell O'Connor <roconnor@blockstream.io> wrote:
<= /div>
In concert= , these two operations enable:

* Oracle signature verifi= cation, including discrete log contracts.

Jonas informs me that I've misunders= tood how discreet log contracts work. The DLC signatures are not directly c= hecked by Script and do not rely on CHECKSIGFROMSTACK.=C2=A0 I apologize fo= r my hasty literature review.
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