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From: Ittay <ittay.eyal@cornell.edu>
Date: Wed, 14 Oct 2015 14:38:35 -0400
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Cc: bitcoin-dev@lists.linuxfoundation.org, Ittay Eyal <ittay.eyal@cornell.edu>
Subject: Re: [bitcoin-dev] Bitcoin-NG whitepaper.
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On Wed, Oct 14, 2015 at 2:20 PM, Bob McElrath <bob@mcelrath.org> wrote:

> So it seems to me that all I need to do is figure out who the current
> leader is,
> and DDoS him off the network to shut Bitcoin-NG down.
>
> This is a significant advantage to bitcoin's ex-post-facto blocks: no one
> knows
> where the next one will come from.  The only way to shut the network down
> is to
> shut all nodes down.
>

That's an interesting point, but such an attack is difficult to pull off.
Miners
often run multiple well connected nodes, allowing them to propagate their
generated blocks from multiple vantage points.

Best,
Ittay


>
> Emin G=C3=BCn Sirer via bitcoin-dev [bitcoin-dev@lists.linuxfoundation.or=
g]
> wrote:
> > Hi everyone,
> >
> > We just released the whitepaper describing Bitcoin-NG, a new technique
> for
> > addressing some of the scalability challenges faced by Bitcoin.
> Surprisingly,
> > Bitcoin-NG can simultaneously increase throughput while reducing
> latency, and
> > do so without impacting Bitcoin's open architecture or changing its tru=
st
> > model. This post illustrates the core technique:
> >      http://hackingdistributed.com/2015/10/14/bitcoin-ng/
> > while the whitepaper has all the nitty gritty details:
> >      http://arxiv.org/abs/1510.02037
> >
> > Fitting NG on top of the current Bitcoin blockchain is future work that
> we
> > think is quite possible. NG is compatible with both Bitcoin as is, as
> well as
> > Blockstream-like sidechains, and we currently are not planning to compe=
te
> > commercially with either technology -- we see NG as being complementary
> to both
> > efforts. This is pure science, published and shared with the community =
to
> > advance the state of blockchains and to help them reach throughputs and
> > latencies required of cutting edge fintech applications. Perhaps it can
> be
> > adopted, or perhaps it can provide the spark of inspiration for someone
> else to
> > come up with even better solutions.
> >
> > We would be delighted to hear your feedback.
> > - Ittay Eyal and E. G=C3=BCn Sirer.
> >
> > !DSPAM:561e98cd301391127216946!
>
> > _______________________________________________
> > bitcoin-dev mailing list
> > bitcoin-dev@lists.linuxfoundation.org
> > https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
> >
> >
> > !DSPAM:561e98cd301391127216946!
>
> --
> Cheers, Bob McElrath
>
> "For every complex problem, there is a solution that is simple, neat, and
> wrong."
>     -- H. L. Mencken
>
>

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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><div class=3D"gmail_quo=
te">On Wed, Oct 14, 2015 at 2:20 PM, Bob McElrath <span dir=3D"ltr">&lt;<a =
href=3D"mailto:bob@mcelrath.org" target=3D"_blank">bob@mcelrath.org</a>&gt;=
</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .=
8ex;border-left:1px #ccc solid;padding-left:1ex">So it seems to me that all=
 I need to do is figure out who the current leader is,<br>
and DDoS him off the network to shut Bitcoin-NG down.<br>
<br>
This is a significant advantage to bitcoin&#39;s ex-post-facto blocks: no o=
ne knows<br>
where the next one will come from.=C2=A0 The only way to shut the network d=
own is to<br>
shut all nodes down.<br></blockquote><div><br></div><div>That&#39;s an inte=
resting point, but such an attack is difficult to pull off. Miners=C2=A0</d=
iv><div>often run multiple well connected nodes, allowing them to propagate=
 their=C2=A0</div><div>generated blocks from multiple vantage points.=C2=A0=
</div><div><br></div><div>Best,=C2=A0</div><div>Ittay=C2=A0</div><div>=C2=
=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;borde=
r-left:1px #ccc solid;padding-left:1ex">
<div><div class=3D"h5"><br>
Emin G=C3=BCn Sirer via bitcoin-dev [<a href=3D"mailto:bitcoin-dev@lists.li=
nuxfoundation.org">bitcoin-dev@lists.linuxfoundation.org</a>] wrote:<br>
&gt; Hi everyone,<br>
&gt;<br>
&gt; We just released the whitepaper describing Bitcoin-NG, a new technique=
 for<br>
&gt; addressing some of the scalability challenges faced by Bitcoin. Surpri=
singly,<br>
&gt; Bitcoin-NG can simultaneously increase throughput while reducing laten=
cy, and<br>
&gt; do so without impacting Bitcoin&#39;s open architecture or changing it=
s trust<br>
&gt; model. This post illustrates the core technique:<br>
&gt; =C2=A0 =C2=A0 =C2=A0<a href=3D"http://hackingdistributed.com/2015/10/1=
4/bitcoin-ng/" rel=3D"noreferrer" target=3D"_blank">http://hackingdistribut=
ed.com/2015/10/14/bitcoin-ng/</a><br>
&gt; while the whitepaper has all the nitty gritty details:<br>
&gt; =C2=A0 =C2=A0 =C2=A0<a href=3D"http://arxiv.org/abs/1510.02037" rel=3D=
"noreferrer" target=3D"_blank">http://arxiv.org/abs/1510.02037</a><br>
&gt;<br>
&gt; Fitting NG on top of the current Bitcoin blockchain is future work tha=
t we<br>
&gt; think is quite possible. NG is compatible with both Bitcoin as is, as =
well as<br>
&gt; Blockstream-like sidechains, and we currently are not planning to comp=
ete<br>
&gt; commercially with either technology -- we see NG as being complementar=
y to both<br>
&gt; efforts. This is pure science, published and shared with the community=
 to<br>
&gt; advance the state of blockchains and to help them reach throughputs an=
d<br>
&gt; latencies required of cutting edge fintech applications. Perhaps it ca=
n be<br>
&gt; adopted, or perhaps it can provide the spark of inspiration for someon=
e else to<br>
&gt; come up with even better solutions.<br>
&gt;<br>
&gt; We would be delighted to hear your feedback.=C2=A0<br>
&gt; - Ittay Eyal and E. G=C3=BCn Sirer.<br>
&gt;<br>
</div></div>&gt; !DSPAM:561e98cd301391127216946!<br>
<span class=3D""><br>
&gt; _______________________________________________<br>
&gt; bitcoin-dev mailing list<br>
&gt; <a href=3D"mailto:bitcoin-dev@lists.linuxfoundation.org">bitcoin-dev@l=
ists.linuxfoundation.org</a><br>
&gt; <a href=3D"https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-=
dev" rel=3D"noreferrer" target=3D"_blank">https://lists.linuxfoundation.org=
/mailman/listinfo/bitcoin-dev</a><br>
&gt;<br>
&gt;<br>
</span>&gt; !DSPAM:561e98cd301391127216946!<br>
<br>
--<br>
Cheers, Bob McElrath<br>
<br>
&quot;For every complex problem, there is a solution that is simple, neat, =
and wrong.&quot;<br>
=C2=A0 =C2=A0 -- H. L. Mencken<br>
<br>
</blockquote></div><br></div></div>

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