Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 0DD11990 for ; Tue, 20 Sep 2016 21:56:53 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from outmail148102.authsmtp.net (outmail148102.authsmtp.net [62.13.148.102]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id 5B77115E for ; Tue, 20 Sep 2016 21:56:52 +0000 (UTC) Received: from mail-c247.authsmtp.com (mail-c247.authsmtp.com [62.13.128.247]) by punt20.authsmtp.com (8.14.2/8.14.2/) with ESMTP id u8KLumZx016284; Tue, 20 Sep 2016 22:56:48 +0100 (BST) Received: from petertodd.org (ec2-52-5-185-120.compute-1.amazonaws.com [52.5.185.120]) (authenticated bits=0) by mail.authsmtp.com (8.14.2/8.14.2/) with ESMTP id u8KLukhK030582 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 20 Sep 2016 22:56:47 +0100 (BST) Received: from [127.0.0.1] (localhost [127.0.0.1]) by petertodd.org (Postfix) with ESMTPSA id 1D6514016F; Tue, 20 Sep 2016 21:53:03 +0000 (UTC) Received: by localhost (Postfix, from userid 1000) id 0741820306; Tue, 20 Sep 2016 17:56:45 -0400 (EDT) Date: Tue, 20 Sep 2016 17:56:44 -0400 From: Peter Todd To: Tom , Bitcoin Protocol Discussion Message-ID: <20160920215644.GA12030@fedora-21-dvm> References: <7844645.RLYLWYmWtM@garp> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="IS0zKkzwUGydFO0o" Content-Disposition: inline In-Reply-To: <7844645.RLYLWYmWtM@garp> User-Agent: Mutt/1.5.23 (2014-03-12) X-Server-Quench: 2067c6fe-7f7d-11e6-bcde-0015176ca198 X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCd2Yg0TA1ZNQRgX IjsJECJaVQIpKltL GxAVKBZePFsRUQkR aAdMdAIUC1AEAgsB AmAbWVZeVVt7XWQ7 bghPaBtcak9QXgdq T0pMXVMcUQ0TfVla XmUeURl3fwcIfHZx ZQhgXnZcD0IsIFt6 FEkACGwHMGF9OjNL BV1YdwJRcQRMLU5E Y1gxNiYHcQ5VPz4z GA41ejw8IwAXEilM XwwWMVMUTg4hPwZ0 TgsZHDopGEADW3Z7 ARgrOl8WGEtZDl87 N0AoUk4ZNBkJTGUA X-Authentic-SMTP: 61633532353630.1038:706 X-AuthFastPath: 0 (Was 255) X-AuthSMTP-Origin: 52.5.185.120/25 X-AuthVirus-Status: No virus detected - but ensure you scan with your own anti-virus system. X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,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 Subject: Re: [bitcoin-dev] Requesting BIP assignment; Flexible Transactions. 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: Tue, 20 Sep 2016 21:56:53 -0000 --IS0zKkzwUGydFO0o Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Sep 20, 2016 at 07:15:45PM +0200, Tom via bitcoin-dev wrote: > =3D=3D=3D Serialization order=3D=3D=3D >=20 > The tokens defined above have to be serialized in a certain order for the > transaction to be well-formatted. Not serializing transactions in the > order specified would allow multiple interpretations of the data which > can't be allowed. If the order of the tokens is fixed, the tokens themselves are redundant information when tokens are required; when tokens may be omitted, a simple "Some/None" flag to mark whether or not the optional data has been omitted = is appropriate. Also, if you're going to break compatibility with all existing software, it makes sense to use a format that extends the merkle tree down into the transaction inputs and outputs. --=20 https://petertodd.org 'peter'[:-1]@petertodd.org --IS0zKkzwUGydFO0o Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJX4bCYAAoJEGOZARBE6K+yoaoH/0pehknnlP2LfTCWfF/UmhJW T7SBd5ou+a0mrOb7MCiZ2MDXvrNehyyDBeXSANWZjI3y3RnlUgHyTcQp2sh381EP MMG2GXdfcfWzP8eXRAF+hiuFYKMEOIrqoU60/VzAKSz7IxYds8Y+Piz8ujXpxEWQ q+Ss4SvKYl+r6qRJ96D4sL/CAjx+JyLFW7WIqyMz0SeFX1nUdMssVrhGwx7fJCL9 LB1pp+oENNLaJeMfOJD76zRXfR6oP8mqTVvsbTYg4kenTLL5yIrXPgTUta8FmBx8 boyp+me4Gs0t841Hs/FArDDlHdxegL1EVQUHDTGscFUGb7QCSc74YDV8owhNJtc= =mrru -----END PGP SIGNATURE----- --IS0zKkzwUGydFO0o--