Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1XwZ91-0001ic-Bq for bitcoin-development@lists.sourceforge.net; Thu, 04 Dec 2014 16:20:43 +0000 Received-SPF: pass (sog-mx-4.v43.ch3.sourceforge.com: domain of dashjr.org designates 85.234.147.28 as permitted sender) client-ip=85.234.147.28; envelope-from=luke@dashjr.org; helo=zinan.dashjr.org; Received: from 85-234-147-28.static.as29550.net ([85.234.147.28] helo=zinan.dashjr.org) by sog-mx-4.v43.ch3.sourceforge.com with esmtp (Exim 4.76) id 1XwZ90-0001UX-7d for bitcoin-development@lists.sourceforge.net; Thu, 04 Dec 2014 16:20:43 +0000 Received: from ishibashi.localnet (unknown [IPv6:2001:470:5:265:61b6:56a6:b03d:28d6]) (Authenticated sender: luke-jr) by zinan.dashjr.org (Postfix) with ESMTPSA id 6EE46108374C for ; Thu, 4 Dec 2014 15:42:45 +0000 (UTC) To: Bitcoin Dev From: Luke Dashjr Date: Thu, 4 Dec 2014 15:42:42 +0000 X-PGP-Key-Fingerprint: E463 A93F 5F31 17EE DE6C 7316 BD02 9424 21F4 889F X-PGP-Key-ID: BD02942421F4889F X-PGP-Keyserver: hkp://pgp.mit.edu MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201412041542.44207.luke@dashjr.org> X-Spam-Score: -1.5 (-) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. 0.0 TVD_RCVD_IP Message was received from an IP address -1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for sender-domain -0.0 SPF_PASS SPF: sender matches SPF record X-Headers-End: 1XwZ90-0001UX-7d Subject: [Bitcoin-development] Serialised P2SH HD chains X-BeenThere: bitcoin-development@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 04 Dec 2014 16:20:43 -0000 Is anyone working on a serialisation format to convey P2SH HD chains? For example, to give someone who wants to make recurring payments a single token that can be used to generate many P2SH addresses paying to a multisig script. I'm thinking of something along the lines of a simple series of tokens, each indicating either a HD chain or literal script content. For all HD chains in the data, a child key would be generated based on the payment number, and all tokens concatenated to form the P2SH serialised script. Eg, for a simple 2- of-2, you would do something like this: literal(OP_2) HDChain HDChain literal(OP_2 OP_CHECKMULTISIG) Does this sufficiently cover all reasonable use cases? Luke