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From: Kabuto Samourai <kabuto@samouraiwallet.com>
Date: Thu, 7 Sep 2017 11:30:06 -0500
Message-ID: <CA+_kfXL7bkV+PqR7GdQ9GdDz9AnEBoRXFCgYyJdMJQ8zuCKOEA@mail.gmail.com>
To: Pavol Rusnak <stick@satoshilabs.com>
Content-Type: multipart/alternative; boundary="94eb2c1cf1ba87faa005589bfbbf"
Cc: Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] Proposal: Extended serialization format for
	BIP-32 wallets
Precedence: list

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> Birthday

Why not make this block height, rather than a timestamp?

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 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

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<div dir=3D"ltr">&gt; Birthday<div><br></div><div>Why not make this block h=
eight, rather than a timestamp?</div></div><div class=3D"gmail_extra"><br><=
div class=3D"gmail_quote">On Thu, Sep 7, 2017 at 11:25 AM, Pavol Rusnak <sp=
an dir=3D"ltr">&lt;<a href=3D"mailto:stick@satoshilabs.com" target=3D"_blan=
k">stick@satoshilabs.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmai=
l_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left=
:1ex"><span class=3D"">On 07/09/17 05:52, Kabuto Samourai wrote:<br>
&gt; The birthday field is interesting. Could you provide some motivation f=
or<br>
&gt; its inclusion?<br>
<br>
</span>Birthday is something SPV wallet developers have been wanting for ye=
ars.<br>
It helps them with the initial scan, so SPV wallet does not have to<br>
download every block in the blockchain, but only the ones after birthday.<b=
r>
<span class=3D""><br>
&gt; Could you also add some test vectors?<br>
<br>
</span>I will add some test vectors, when we agree this is the way to go.<b=
r>
<span class=3D""><br>
&gt; There are a few minor grammar / spelling errors, but we can nitpick<br=
>
&gt; those after this goes to the pull request stage on bitcoin/bips.<br>
<br>
</span>+1<br>
<div class=3D"HOEnZb"><div class=3D"h5"><br>
--<br>
Best Regards / S pozdravom,<br>
<br>
Pavol &quot;stick&quot; Rusnak<br>
CTO, SatoshiLabs<br>
</div></div></blockquote></div><br><br clear=3D"all"><div><br></div>-- <br>=
<div class=3D"gmail_signature" data-smartmail=3D"gmail_signature"><div dir=
=3D"ltr"><div><div dir=3D"ltr">-Kabuto</div><div dir=3D"ltr"><br></div><div=
><font size=3D"1">PGP Fingerprint:=C2=A01A83 4A96 EDE7 E286 2C5A =C2=A0B065=
 320F B934 A79B 6A99</font></div></div></div></div>
</div>

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