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 CFF22BC2 for ; Thu, 7 Sep 2017 20:00:09 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from mail.sldev.cz (mail.sldev.cz [51.254.7.247]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 59F4B41D for ; Thu, 7 Sep 2017 20:00:09 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mail.sldev.cz (Postfix) with ESMTP id C1D43E5C1; Thu, 7 Sep 2017 20:20:21 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at mail.sldev.cz Received: from mail.sldev.cz ([127.0.0.1]) by localhost (mail.sl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Jnum0okA_5MS; Thu, 7 Sep 2017 20:20:21 +0000 (UTC) Received: from tetra.site (unknown [10.8.8.107]) by mail.sldev.cz (Postfix) with ESMTPSA id 51F87E372; Thu, 7 Sep 2017 20:20:21 +0000 (UTC) To: Andreas Schildbach , Bitcoin Protocol Discussion References: <0d405f5d-c0a4-bad7-b6c3-08ba4424bf17@satoshilabs.com> <8b4831a4-791e-c03e-baa4-16d9e5ead442@electrum.org> <84f4a4b8-fcbd-433b-9556-174ec5475f61@satoshilabs.com> From: Pavol Rusnak Message-ID: <40ed03a1-915c-33b0-c4ac-e898c8c733ba@satoshilabs.com> Date: Thu, 7 Sep 2017 22:00:05 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=0.0 required=5.0 tests=none autolearn=disabled version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Subject: Re: [bitcoin-dev] Proposal: Extended serialization format for BIP-32 wallets 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: Thu, 07 Sep 2017 20:00:09 -0000 On 07/09/17 21:35, Andreas Schildbach via bitcoin-dev wrote: > In case of Bitcoin Wallet, the depth is not null (m/0'/[0,1]) and still > we need this field. But the depth of exported public key will be null. It does not make sense to export xpub for m or m/0' for your particular case. > I think it should always be present if a chain is > limited to a certain script type. I am fine with having the path there all the time. > There is however the case where even on one chain, script types are > mixed. In this case the field should be omitted and the wallet needs to > scan for all (known) types. Afaik Bitcoin Core is taking this path. Is that really the case? Why come up with a hierarchy and then don't use it? -- Best Regards / S pozdravom, Pavol "stick" Rusnak CTO, SatoshiLabs