From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <dp@simplexum.com>
Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136])
 by lists.linuxfoundation.org (Postfix) with ESMTP id A0BEDC0051
 for <bitcoin-dev@lists.linuxfoundation.org>;
 Thu, 24 Sep 2020 04:19:05 +0000 (UTC)
Received: from localhost (localhost [127.0.0.1])
 by silver.osuosl.org (Postfix) with ESMTP id 8508427261
 for <bitcoin-dev@lists.linuxfoundation.org>;
 Thu, 24 Sep 2020 04:19:05 +0000 (UTC)
X-Virus-Scanned: amavisd-new at osuosl.org
Received: from silver.osuosl.org ([127.0.0.1])
 by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024)
 with ESMTP id 40Zon0bC+VwQ
 for <bitcoin-dev@lists.linuxfoundation.org>;
 Thu, 24 Sep 2020 04:19:04 +0000 (UTC)
X-Greylist: from auto-whitelisted by SQLgrey-1.7.6
Received: from mail.ruggedbytes.com (mail.ruggedbytes.com [88.99.30.248])
 by silver.osuosl.org (Postfix) with ESMTPS id E4AEE20493
 for <bitcoin-dev@lists.linuxfoundation.org>;
 Thu, 24 Sep 2020 04:19:03 +0000 (UTC)
Received: from mail.ruggedbytes.com (localhost [127.0.0.1])
 by mail.ruggedbytes.com (Postfix) with ESMTPS id 2722E260023D;
 Thu, 24 Sep 2020 04:19:01 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=simplexum.com;
 s=mail; t=1600921141;
 bh=THSoFPf9dQAGAjmm6M/sciVx6X945KJNkzCTqLihSIY=;
 h=Date:From:To:Cc:Subject:In-Reply-To:References;
 b=gOuHc3TBSfMJHfh0ukP4SvmNtFwYVB2A45OiArhVAW4gbAWuwnAh2m5FiZxW8L0b2
 NY88vcc8BJmtJL1oiYJF/qa0E057+eNhtoX47J+cbCfkrxPYqqLCOEb09uViAhAj0Z
 QgqEx7fNAHtyPkJpEjIqlaEPgMCTnIlaeNnB41lI=
Date: Thu, 24 Sep 2020 09:22:56 +0500
From: Dmitry Petukhov <dp@simplexum.com>
To: Jeremy via bitcoin-dev <bitcoin-dev@lists.linuxfoundation.org>
Message-ID: <20200924092256.5834511b@simplexum.com>
In-Reply-To: <CAD5xwhhiOFQgkewji0Nd4cYkD-kSH396=YsJ6aw5pzZiGhRutA@mail.gmail.com>
References: <CAD5xwhi6+Q-UX2xVnD4TE9uEbe-omQ748tpJJpYdrMNnG6D5vA@mail.gmail.com>
 <CALZpt+FbRGrcW7LZY=4NtR9w4CP=kavVdqutfrX86OYnouHUJg@mail.gmail.com>
 <CALZpt+EAWbPWh_knT7yDdPT396jEL1g+XSEv1JALuwaJVqNS7w@mail.gmail.com>
 <CAD5xwhgw4Hsco73B1D5+EafXFbcr3227MM2ZNPtycyv2TS-n7g@mail.gmail.com>
 <CALZpt+HtuVC6YmZvABaZUWmN9c3pV1FnX1UUJgGbd_iLuuU8hg@mail.gmail.com>
 <20200921145221.76bg5rnw7ohkm3ck@ganymede>
 <CAD5xwhiwhCEZdpfXc9Z1kePaoSc7qAoin6Sz3zdRWWr67zNm3g@mail.gmail.com>
 <CAFp6fsG8Wu12bnu3jN38Gz3xf5o9tg9Nf8eiMK_e4eW3+RyWZg@mail.gmail.com>
 <CAD5xwhhiOFQgkewji0Nd4cYkD-kSH396=YsJ6aw5pzZiGhRutA@mail.gmail.com>
Organization: simplexum.com
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
X-Mailman-Approved-At: Thu, 24 Sep 2020 07:04:43 +0000
Subject: Re: [bitcoin-dev] A Replacement for RBF and CPFP: Non-Destructive
 TXID Dependencies for Fee Sponsoring
X-BeenThere: bitcoin-dev@lists.linuxfoundation.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: Bitcoin Protocol 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: Thu, 24 Sep 2020 04:19:05 -0000

=D0=92 Wed, 23 Sep 2020 15:10:22 -0700
Jeremy via bitcoin-dev <bitcoin-dev@lists.linuxfoundation.org> wrote:

> It's not particularly important that a transaction be in the same
> block once sponsored, it could also be in the last 100 blocks (the
> opposite of proposed change 3).

This will in effect enable "inverse timelock" mechanism for up to 100
blocks for sponsor transactions: broadcast a transaction A, and
then make a pre-signed sponsor transaction B that sponsors A.

Transaction B will become invalid after 100 blocks due to this rule.

If you put a timelock on B to make it valid after 50 blocks,
then it will be valid between block 50 and 100 after A is confirmed.