From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193] helo=mx.sourceforge.net) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1WTYiT-0005fY-1U for bitcoin-development@lists.sourceforge.net; Fri, 28 Mar 2014 15:29:09 +0000 X-ACL-Warn: Received: from mail-ob0-f176.google.com ([209.85.214.176]) by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1WTYiR-0001B3-QT for bitcoin-development@lists.sourceforge.net; Fri, 28 Mar 2014 15:29:09 +0000 Received: by mail-ob0-f176.google.com with SMTP id wp18so6120503obc.35 for ; Fri, 28 Mar 2014 08:29:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc:content-type; bh=+buD7Zbi8AIcCADbrhUNnjcm81fWJQEZTsbD3VI0WCc=; b=Wg88+NhqAmIemLDW2gXxUSHHY79f6zRu/lgcrgdeLyT71APaaqjJ9jrmH+2/52Edq9 TzHjjToN5+eD0eR2E9AugOG4bQWlXHydVEn3HOaLCmuJYJvp7RpHSpQsx2yt8C8Vol6D T0dBhPnX3MQUkWdCc2xvKT81jnPo2scWaQx/ziF2piAsbBgCjTLBjaqJiMUqmHAyjV6A YxKTAddznQFZ6O4J0p+Kvbj3gseFsW5eyN0DAWyOBzE6+9xXOMAI/3qYul8WtRMJAh7T BQr6VZnPx8KR/PSDX6tBKxdumqhzmPfRG+guiyxRwhwJNk4w7OP+N7nVAh0C+Edbm03x ui3w== X-Gm-Message-State: ALoCoQk1vZMM18aMPoaeyV0opzT4FkkO4cat5Ejsih4vtlzQrNi1DaGKnSE9QhbcvdLxhkVPKoQk X-Received: by 10.182.142.5 with SMTP id rs5mr7248952obb.39.1396018817940; Fri, 28 Mar 2014 08:00:17 -0700 (PDT) MIME-Version: 1.0 Sender: marek@palatinus.cz Received: by 10.60.102.9 with HTTP; Fri, 28 Mar 2014 07:59:47 -0700 (PDT) In-Reply-To: References: <53344FF8.7030204@gk2.sk> From: slush Date: Fri, 28 Mar 2014 15:59:47 +0100 X-Google-Sender-Auth: 2uQ0BuzJRU9j7AAqhahmntZznkM Message-ID: To: Pieter Wuille Content-Type: multipart/alternative; boundary=001a11c2d3b6be580204f5abf5eb X-Spam-Score: 1.0 (+) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (slush[at]centrum.cz) 1.0 HTML_MESSAGE BODY: HTML included in message X-Headers-End: 1WTYiR-0001B3-QT Cc: Bitcoin Dev Subject: Re: [Bitcoin-development] New BIP32 structure 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: Fri, 28 Mar 2014 15:29:09 -0000 --001a11c2d3b6be580204f5abf5eb Content-Type: text/plain; charset=ISO-8859-1 I agree that 'version' field of bip32 is not necessary and xpriv/xpub should be enough for all cases; there's actually no need to use different BIP32 roots for different altcoins. I'm happily using one xpub for Bitcoin/Testnet/Litecoin at once, and by having the "cointype" distinction in the bip32 path itself, I'm sure that I don't reuse the same pubkey across blockchains which may be a privacy issue otherwise. Marek On Thu, Mar 27, 2014 at 5:28 PM, Pieter Wuille wrote: > On Thu, Mar 27, 2014 at 5:21 PM, Pavol Rusnak wrote: > > Cointype in path is for separation purposes, not for identification. > > I don't understand what that gains you. > > -- > Pieter > > > ------------------------------------------------------------------------------ > _______________________________________________ > Bitcoin-development mailing list > Bitcoin-development@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/bitcoin-development > --001a11c2d3b6be580204f5abf5eb Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
I agree that 'version' field of bip32 is not neces= sary and xpriv/xpub should be enough for all cases; there's actually no= need to use different BIP32 roots for different altcoins.

I'm happily using one xpub for Bitcoin/Testnet/Litecoin at once, and by= having the "cointype" distinction in the bip32 path itself, I= 9;m sure that I don't reuse the same pubkey across blockchains which ma= y be a privacy issue otherwise.

Marek


On Thu, Mar 27, 2014 at 5:28 PM, Pieter Wuille <pieter.wuille@gmail.com> wrote:
On Thu, Mar 27, 2014 at 5:21= PM, Pavol Rusnak <stick@gk2.sk> = wrote:
> Cointype in path is for separation purposes, not for identification.
I don't understand what that gains you.

--
Pieter

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