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 DBBF4104D for ; Sat, 23 Jan 2016 04:11:33 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from mail.dtrt.org (mail.dtrt.org [207.192.75.234]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 72476126 for ; Sat, 23 Jan 2016 04:11:33 +0000 (UTC) Received: from harding by mail.dtrt.org with local (Exim 4.72) (envelope-from ) id 1aMpXw-00062Z-2P; Fri, 22 Jan 2016 23:11:32 -0500 Date: Fri, 22 Jan 2016 23:10:42 -0500 From: "David A. Harding" To: Andrew C Message-ID: <20160123041042.GA5956@localhost.localdomain> References: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="4Ckj6UjgE2iN1+kY" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD 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: Sat, 23 Jan 2016 04:27:31 +0000 Cc: Bitcoin development mailing list Subject: Re: [bitcoin-dev] nSequence multiple uses 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: Sat, 23 Jan 2016 04:11:34 -0000 --4Ckj6UjgE2iN1+kY Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jan 22, 2016 at 04:36:58PM +0000, Andrew C via bitcoin-dev wrote: > Spending a time locked output requires setting nSequence to less than > MAX_INT but opting into RBF also requires setting nSequence to less than > MAX_INT.=20 Hi Andrew, Opt-in RBF requires setting nSequence to less than MAX-1 (not merely less than MAX), so an nSequence of exactly MAX-1 (which appears in hex-encoded serialized transactions as feffffff) enables locktime enforcement but doesn't opt in to RBF. For more information, please see BIP125: https://github.com/bitcoin/bips/blob/master/bip-0125.mediawiki -Dave --4Ckj6UjgE2iN1+kY Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJWov1CAAoJEEspww/ynsS3MUwH/jyqghMiKBF3pwq6Ox878y74 FiLhuhtM+CMzIcTOWR/ixVaLgxxia53TonbXNdL/4ych6TA/N7l1mFJeUlHxT3QZ hAVCNcD5CDnyX8hExvt838p3j4JNHx6nTQzT6camjM63NWO5YcPY91aLFgyXbhIX G0IkV37H6G1b+/UYPOp9Nhkpa0zArgLUg8HeZwHs8zCsaCaQvhOLEUyp5jG7vpJC LKVoPtjkjj5in+mMBaBFGFLEs4Juq0R/iumhwNEuF+D+9F8bciag5pjvsOOGj34b z1tVjIE6i2jJO7GATDBUca9xEG9oP+2sW3liejYgdDH+GhUnKjwZoZmaHTfTA2M= =5/CP -----END PGP SIGNATURE----- --4Ckj6UjgE2iN1+kY--