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From: Tom Harding <tomh@thinlink.com>
Date: Sat, 8 Apr 2017 11:27:19 -0700
Message-ID: <CALJP9GBn7cCTmzvDeG8DdKPO0YVTgyk9jB9Nn2PY_G=hbTYWvg@mail.gmail.com>
To: Gregory Maxwell <greg@xiph.org>
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Subject: Re: [bitcoin-dev] Using a storage engine without UTXO-index
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--001a1145b92883da9b054cabe4a2
Content-Type: text/plain; charset=UTF-8

On Apr 7, 2017 12:42, "Gregory Maxwell" <greg@xiph.org> wrote:

On Fri, Apr 7, 2017 at 6:52 PM, Tom Harding via bitcoin-dev
<bitcoin-dev@lists.linuxfoundation.org> wrote:
> A network in which many nodes maintain a transaction index also enables a
> class of light node applications that ask peers to prove existence and
> spentness of TXO's.

Only with the additional commitment structure such as those proposed
by Peter Todd in his stxo/txo commitment designs, e.g.
https://petertodd.org/2016/delayed-txo-commitments


Light nodes are improved by detecting invalid transactions, even before
they are mined.

--001a1145b92883da9b054cabe4a2
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"auto"><div><br><div class=3D"gmail_extra"><br><div class=3D"gma=
il_quote">On Apr 7, 2017 12:42, &quot;Gregory Maxwell&quot; &lt;<a href=3D"=
mailto:greg@xiph.org">greg@xiph.org</a>&gt; wrote:<br type=3D"attribution">=
<blockquote class=3D"quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc=
 solid;padding-left:1ex"><div class=3D"quoted-text">On Fri, Apr 7, 2017 at =
6:52 PM, Tom Harding via bitcoin-dev<br>
&lt;<a href=3D"mailto:bitcoin-dev@lists.linuxfoundation.org">bitcoin-dev@li=
sts.<wbr>linuxfoundation.org</a>&gt; wrote:<br>
&gt; A network in which many nodes maintain a transaction index also enable=
s a<br>
&gt; class of light node applications that ask peers to prove existence and=
<br>
&gt; spentness of TXO&#39;s.<br>
<br>
</div>Only with the additional commitment structure such as those proposed<=
br>
by Peter Todd in his stxo/txo commitment designs, e.g.<br>
<a href=3D"https://petertodd.org/2016/delayed-txo-commitments" rel=3D"noref=
errer" target=3D"_blank">https://petertodd.org/2016/<wbr>delayed-txo-commit=
ments</a><br>
</blockquote></div><br></div></div><div class=3D"gmail_extra" dir=3D"auto">=
Light nodes are improved by detecting invalid transactions, even before the=
y are mined.</div></div>

--001a1145b92883da9b054cabe4a2--