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 16E9CB65 for ; Thu, 7 Sep 2017 16:30:49 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.7.6 Received: from mail-lf0-f43.google.com (mail-lf0-f43.google.com [209.85.215.43]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 55A29101 for ; Thu, 7 Sep 2017 16:30:48 +0000 (UTC) Received: by mail-lf0-f43.google.com with SMTP id m199so362175lfe.3 for ; Thu, 07 Sep 2017 09:30:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samouraiwallet-com.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=RQHz7vSMpGrjLrcqO5itWUhtwWiXZnv3slf3yU8+8l4=; b=MvPiY7BkLlPEkffFArZjbnXeVAfBEXMYPxYEBJdICL4n4IoYlZ6DTA+rPPl+P0bowK JeVM2fEen0Kz9DCp0lNdyhxuhA0ETjFMr/Y12hZut7AN0088ptHdNRm26RUTBeiN0G9f /A+wPjW0IcoaqTVFcbOmSpkIFdJRQYm3RvincUyFQtHsbAfLSP1hkT//0GEjPjnkP0/O NVWwmsP3N5sglSItsI4mP1BkYb4mol+iv3ewDGdXOGiI/bTQnBQfwY+C7rh6UAO0lG2X eZ7fy2sL6Ug/p7wgwL1xxnGBwNrY+TbVRDLaqr6g+eKGFWIhn8RAdAX9RjEqhipDrvJl fjGQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=RQHz7vSMpGrjLrcqO5itWUhtwWiXZnv3slf3yU8+8l4=; b=FNpNr3T+Hg+B9mxaw1mfTmAFCHTN6nlpe1f2Qp09Ri4YE8jS1nrDFGttsiBsIM/eJ+ FXBVqBOKsT+xFt/LU6PY7KHOxp1Sngjz4TSxcgkdOuQsOP/ig7x3iADC6AzPyRKFK/76 6ZAcvHYENAQuRucDGYhqGJuXwFUJAZ1xvvl7BOO/8BpzY3JT6DMQ4KpiDgO+9c/hbYSv Ptzdrf2cebzPkHT6gwGFDq4S5pDwMsuqCBthk8cdSF/OM/AAdTP7ypUPPInztHFoT4NK HZ1/w8IZxy683/xGUZKZvW06XRSc6fieeLQUMAHPzXaPnqEiEIypJBt+RYs9awMVs+/p VwTg== X-Gm-Message-State: AHPjjUhbWUaylQ3doOmhbhFue67kTCX9FdEDb0FmEq93nVbhHDZnbPXw l6cyduga+rjUv1S8uDYYzjADsXqkbMFA X-Google-Smtp-Source: AOwi7QAZk1460dXX12sijrIaAAGKQmRpEAuvGqRjPdSHMyxLIfKbtUXy5m4vKXrIxBF2u9T1kB5ZRBJ+O7QRnlsA6Bg= X-Received: by 10.46.83.23 with SMTP id h23mr191880ljb.8.1504801846714; Thu, 07 Sep 2017 09:30:46 -0700 (PDT) MIME-Version: 1.0 Received: by 10.25.148.23 with HTTP; Thu, 7 Sep 2017 09:30:06 -0700 (PDT) In-Reply-To: <200b706a-f6ac-479a-2dce-fd66fe943949@satoshilabs.com> References: <0d405f5d-c0a4-bad7-b6c3-08ba4424bf17@satoshilabs.com> <200b706a-f6ac-479a-2dce-fd66fe943949@satoshilabs.com> From: Kabuto Samourai Date: Thu, 7 Sep 2017 11:30:06 -0500 Message-ID: To: Pavol Rusnak Content-Type: multipart/alternative; boundary="94eb2c1cf1ba87faa005589bfbbf" X-Spam-Status: No, score=0.5 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, HTML_MESSAGE,RCVD_IN_DNSWL_NONE,RCVD_IN_SORBS_SPAM autolearn=disabled version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org X-Mailman-Approved-At: Thu, 07 Sep 2017 16:39:05 +0000 Cc: Bitcoin Protocol Discussion 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 16:30:49 -0000 --94eb2c1cf1ba87faa005589bfbbf Content-Type: text/plain; charset="UTF-8" > Birthday Why not make this block height, rather than a timestamp? On Thu, Sep 7, 2017 at 11:25 AM, Pavol Rusnak wrote: > On 07/09/17 05:52, Kabuto Samourai wrote: > > The birthday field is interesting. Could you provide some motivation for > > its inclusion? > > Birthday is something SPV wallet developers have been wanting for years. > It helps them with the initial scan, so SPV wallet does not have to > download every block in the blockchain, but only the ones after birthday. > > > Could you also add some test vectors? > > I will add some test vectors, when we agree this is the way to go. > > > There are a few minor grammar / spelling errors, but we can nitpick > > those after this goes to the pull request stage on bitcoin/bips. > > +1 > > -- > Best Regards / S pozdravom, > > Pavol "stick" Rusnak > CTO, SatoshiLabs > -- -Kabuto PGP Fingerprint: 1A83 4A96 EDE7 E286 2C5A B065 320F B934 A79B 6A99 --94eb2c1cf1ba87faa005589bfbbf Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
> Birthday

Why not make this block h= eight, rather than a timestamp?

<= div class=3D"gmail_quote">On Thu, Sep 7, 2017 at 11:25 AM, Pavol Rusnak <stick@satoshilabs.com> wrote:
On 07/09/17 05:52, Kabuto Samourai wrote:
> The birthday field is interesting. Could you provide some motivation f= or
> its inclusion?

Birthday is something SPV wallet developers have been wanting for ye= ars.
It helps them with the initial scan, so SPV wallet does not have to
download every block in the blockchain, but only the ones after birthday.
> Could you also add some test vectors?

I will add some test vectors, when we agree this is the way to go.
> There are a few minor grammar / spelling errors, but we can nitpick > those after this goes to the pull request stage on bitcoin/bips.

+1

--
Best Regards / S pozdravom,

Pavol "stick" Rusnak
CTO, SatoshiLabs



--
=
-Kabuto

PGP Fingerprint:=C2=A01A83 4A96 EDE7 E286 2C5A =C2=A0B065= 320F B934 A79B 6A99
--94eb2c1cf1ba87faa005589bfbbf--