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 07DC2E7E for ; Fri, 25 Jan 2019 05:33:43 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mail-40133.protonmail.ch (mail-40133.protonmail.ch [185.70.40.133]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id E0AD2180 for ; Fri, 25 Jan 2019 05:33:41 +0000 (UTC) Date: Fri, 25 Jan 2019 05:33:37 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=default; t=1548394419; bh=ukW2FRMyuxVmUk2htqH2PsvdCu5Nq2sUkZMx6idCgoQ=; h=Date:To:From:Cc:Reply-To:Subject:In-Reply-To:References: Feedback-ID:From; b=XJeZClYMnCFJcNUMWvud9q7RludJkwNk7YcQd4zkVNsO5JoffNuId7uiXPH7duml3 VH5B93XVLjuDQ8KAJ7mdSAmdlUMUihrNwB1iPlYpbIQZRHrDV+Bbt+VEku5JStx7JA LAnDk8R/v7h3Mo+z+THdQziKF1cOT4jJ5Pg1EkPQ= To: Peter Todd From: ZmnSCPxj Reply-To: ZmnSCPxj Message-ID: In-Reply-To: <23C4B29C-0A0C-4680-BF99-3A86C215BE34@petertodd.org> References: <8u0ExA_vvhRGzmFmxUoyqk6IBrnUEtEHAEMKzqLWLxC6IgBtvZR24jZBgeMeJlsPcjJKYgVar_rC388ZNjP09ZUkukfP1KRcL9NMDkrVrQM=@protonmail.com> <23C4B29C-0A0C-4680-BF99-3A86C215BE34@petertodd.org> Feedback-ID: el4j0RWPRERue64lIQeq9Y2FP-mdB86tFqjmrJyEPR9VAtMovPEo9tvgA0CrTsSHJeeyPXqnoAu6DN-R04uJUg==:Ext:ProtonMail MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-2.2 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, FROM_LOCAL_NOVOWEL, 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, 25 Jan 2019 06:39:43 +0000 Cc: Bitcoin Protocol Discussion Subject: Re: [bitcoin-dev] Proof-of-Stake Bitcoin Sidechains 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, 25 Jan 2019 05:33:43 -0000 Good mornint Peter, > > > Wouldn=E2=80=99t a revealed private key for time locked funds create = a race > > > to spend? I imagine miners who are paying attention would have the > > > advantage but it would still just be a race. > > > > If Bitcoin had implemented RBF "properly" (i.e. not have the silly > > "opt-out" rule) then such races are won by bidding up the fees. A > > Note that CSV using transactions are always RBF as CSV disables the opt-o= ut. > Thank you for this information. I forgot that RBF opt-out was hacked on top of `nSequence`, and relative ti= melocks were also hacked on top of `nSequence`. In particular coins locked on mainchain for the purpose of staking a sidech= ain (mainstake) have to be locked with an `OP_CSV`, which immediately enabl= es this protection. Regards, ZmnSCPxj