1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193]
helo=mx.sourceforge.net)
by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76)
(envelope-from <jameson.lopp@gmail.com>) id 1VdmNN-0001o3-Mg
for bitcoin-development@lists.sourceforge.net;
Tue, 05 Nov 2013 19:33:21 +0000
Received-SPF: pass (sog-mx-3.v43.ch3.sourceforge.com: domain of gmail.com
designates 209.85.216.42 as permitted sender)
client-ip=209.85.216.42; envelope-from=jameson.lopp@gmail.com;
helo=mail-qa0-f42.google.com;
Received: from mail-qa0-f42.google.com ([209.85.216.42])
by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128)
(Exim 4.76) id 1VdmNM-0005PD-Vw
for bitcoin-development@lists.sourceforge.net;
Tue, 05 Nov 2013 19:33:21 +0000
Received: by mail-qa0-f42.google.com with SMTP id ii20so781123qab.8
for <bitcoin-development@lists.sourceforge.net>;
Tue, 05 Nov 2013 11:33:15 -0800 (PST)
X-Received: by 10.49.71.131 with SMTP id v3mr12486336qeu.85.1383679995512;
Tue, 05 Nov 2013 11:33:15 -0800 (PST)
Received: from [192.168.119.206] (BRONTO-SOFT.car1.Raleigh1.Level3.net.
[4.59.160.2])
by mx.google.com with ESMTPSA id 5sm70403719qao.3.2013.11.05.11.33.14
for <bitcoin-development@lists.sourceforge.net>
(version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128);
Tue, 05 Nov 2013 11:33:15 -0800 (PST)
Message-ID: <527947FA.8070508@gmail.com>
Date: Tue, 05 Nov 2013 14:33:14 -0500
From: Jameson Lopp <jameson.lopp@gmail.com>
User-Agent: Mozilla/5.0 (X11; Linux x86_64;
rv:24.0) Gecko/20100101 Thunderbird/24.1.0
MIME-Version: 1.0
To: bitcoin-development@lists.sourceforge.net
References: <CABT1wWkOukEzxK5fLbnA4ZgJGN1hb_DMteCJOfA13FE_QZCi=Q@mail.gmail.com> <20131105170541.GA13660@petertodd.org> <20131105171445.GA13710@petertodd.org> <CABT1wW=XgDfxfxMxyjcNhtNTzXkGLtgSLz3JJcUAq9ywgpymyg@mail.gmail.com> <CANEZrP0itd3xW7yyg9FBJVuJNttcmMhnqWGOaWxjz37ATrR8qA@mail.gmail.com> <CADre0dm0PGARSXXdwoa1ZOnpbEw_bx0aKP17q4PSFLTayyoRJw@mail.gmail.com> <CAJHLa0MO9Q7D_9xmXPYKrebC7sMLoZtJ4epFSk36e8mMNMSKGg@mail.gmail.com> <CADre0dm_j68pN9Ov45kd47Y2DLnnfNiyocMvaUtgE=CJPUTUiA@mail.gmail.com>
<CAJHLa0PYKACnh27TRC4Yp6uSA0iKEAp+pYt6K_xWJfn2CxzGAw@mail.gmail.com>
In-Reply-To: <CAJHLa0PYKACnh27TRC4Yp6uSA0iKEAp+pYt6K_xWJfn2CxzGAw@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-Spam-Score: -1.6 (-)
X-Spam-Report: Spam Filtering performed by mx.sourceforge.net.
See http://spamassassin.org/tag/ for more details.
-1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for
sender-domain
0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider
(jameson.lopp[at]gmail.com)
-0.0 SPF_PASS SPF: sender matches SPF record
-0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from
author's domain
0.1 DKIM_SIGNED Message has a DKIM or DK signature,
not necessarily valid
-0.1 DKIM_VALID Message has at least one valid DKIM or DK signature
X-Headers-End: 1VdmNM-0005PD-Vw
Subject: Re: [Bitcoin-development] BIP proposal - patch to raise selfish
mining threshold.
X-BeenThere: bitcoin-development@lists.sourceforge.net
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: <bitcoin-development.lists.sourceforge.net>
List-Unsubscribe: <https://lists.sourceforge.net/lists/listinfo/bitcoin-development>,
<mailto:bitcoin-development-request@lists.sourceforge.net?subject=unsubscribe>
List-Archive: <http://sourceforge.net/mailarchive/forum.php?forum_name=bitcoin-development>
List-Post: <mailto:bitcoin-development@lists.sourceforge.net>
List-Help: <mailto:bitcoin-development-request@lists.sourceforge.net?subject=help>
List-Subscribe: <https://lists.sourceforge.net/lists/listinfo/bitcoin-development>,
<mailto:bitcoin-development-request@lists.sourceforge.net?subject=subscribe>
X-List-Received-Date: Tue, 05 Nov 2013 19:33:21 -0000
The conversations that spawned from this paper have been fascinating to
read, but I have a problem with the conclusions. To quote the paper:
"The Bitcoin ecosystem is open to manipulation, and potential takeover,
by miners seeking to maximize their rewards. This paper presented
Selfish-Mine, a mining strategy that enables pools of colluding miners
that adopt it to earn revenues in excess of their mining power. Higher
revenues can lead new rational miners to join selsh miner pools,
leading to a collapse of the decentralized currency."
Please explain to me why any rational miner would collude to earn
slightly higher short term profits at the expense of then wiping out the
value of all their bitcoins in the long term.
Also, if you felt that this vulnerability is an immediate danger to the
Bitcoin network, why publish the vulnerability publicly rather than
first disclosing it privately to the core developers? Apologies if you
did disclose it privately in the past; I've seen no mention of it.
--
Jameson Lopp
Software Engineer
Bronto Software
On 11/05/2013 01:58 PM, Jeff Garzik wrote:
> On Tue, Nov 5, 2013 at 1:55 PM, Alessandro Parisi <startithub@gmail.com> wrote:
>> this means that anytime a bug is found in Bitcoin protocol, chances are that
>> it would take a lot more time to get fixed
>
> Correct. There is significant potential that a fix can create other
> problems... and any major mistake could instantly destroy > $2
> billion worth of value.
>
|