Date: Wed, 15 Jul 2015 11:59:03 -0400
From: Peter Todd <pete@petertodd.org>
To: Me <jimmyjack@gmail.com>
Message-ID: <20150715155903.GC20029@savin.petertodd.org>
References: <24662b038abc45da7f3990e12a649b8a@airmail.cc>
	<55A66FA9.4010506@thinlink.com>
	<20150715151825.GB20029@savin.petertodd.org>
	<CDB5FC27-F3F0-44F7-BBC6-670ACAE740D2@gmail.com>
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Cc: bitcoin-dev@lists.linuxfoundation.org
Subject: Re: [bitcoin-dev] Significant losses by double-spending unconfirmed
 transactions
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On Wed, Jul 15, 2015 at 08:49:13AM -0700, Me wrote:
> > Blockcypher's "confidence factor" model(1)
> > under the hood - yet another one of those sybil attacking network
> > monitoring things
>=20
>=20
> Peter, I noticed on your twitter you have a lot of bad things to say abou=
t Blockcypher and their business model (which I might not full agree, but t=
otally respect), can you share any evidence they perform any form of Sybil =
attack on the network, please.=20

For Blockcypher to succesfully do what they claim to do they need to
connect to a large % of nodes on the network; that right there is a
sybil attack. It's an approach that uses up connection slots for the
entire network and isn't scalable; if more than a few services were
doing that the Bitcoin network would become significantly less reliable,
at some point collapsing entirely.

--=20
'peter'[:-1]@petertodd.org
0000000000000000093f699ccdb323aa638af1131249ec2e1bacbf367163807a

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