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
|
Return-Path: <adam@cypherspace.org>
Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org
[172.17.192.35])
by mail.linuxfoundation.org (Postfix) with ESMTPS id 3FC0411DB
for <bitcoin-dev@lists.linuxfoundation.org>;
Tue, 8 Sep 2015 14:18:05 +0000 (UTC)
X-Greylist: from auto-whitelisted by SQLgrey-1.7.6
Received: from mout.perfora.net (mout.perfora.net [74.208.4.196])
by smtp1.linuxfoundation.org (Postfix) with ESMTPS id F25F8223
for <bitcoin-dev@lists.linuxfoundation.org>;
Tue, 8 Sep 2015 14:18:04 +0000 (UTC)
Received: from mail-ig0-f173.google.com ([209.85.213.173]) by
mrelay.perfora.net (mreueus001) with ESMTPSA (Nemesis) id
0MKaY5-1ZXw8y3tTz-0022z1 for <bitcoin-dev@lists.linuxfoundation.org>;
Tue, 08 Sep 2015 16:18:03 +0200
Received: by igcpb10 with SMTP id pb10so79797435igc.1
for <bitcoin-dev@lists.linuxfoundation.org>;
Tue, 08 Sep 2015 07:18:03 -0700 (PDT)
MIME-Version: 1.0
X-Received: by 10.50.39.6 with SMTP id l6mr16099923igk.55.1441721883085; Tue,
08 Sep 2015 07:18:03 -0700 (PDT)
Received: by 10.50.132.195 with HTTP; Tue, 8 Sep 2015 07:18:03 -0700 (PDT)
In-Reply-To: <CAG0bcYzBCsg9xNLGmu4S=PEPjtbd2iBLH52ryswbkRM23OqquA@mail.gmail.com>
References: <CAG0bcYzzg4yeQvd27PZu5Fqv1ULS3cKeQHaRZ2zPcM3OASw1cg@mail.gmail.com>
<CADJgMztJx1cBFhNOwMgBHJGPmBNPqsTdQbCCjFBmDBSBfTMMUg@mail.gmail.com>
<CAAre=yRawFU_WMdE+ReemscYD33ez1PF6VhU2FmWo2fAEcw_Xw@mail.gmail.com>
<CALqxMTERUFEFgJ4quz2dWLRw9fD3DkBp-6RO4cuvdBGV2MSyhw@mail.gmail.com>
<CAG0bcYzBCsg9xNLGmu4S=PEPjtbd2iBLH52ryswbkRM23OqquA@mail.gmail.com>
Date: Tue, 8 Sep 2015 15:18:03 +0100
Message-ID: <CALqxMTFQhFusR5jkEMvRdxDVLZPzWSW5hUHpXoON-K-+xJjpNA@mail.gmail.com>
From: Adam Back <adam@cypherspace.org>
To: Washington Sanchez <washington.sanchez@gmail.com>
Content-Type: text/plain; charset=UTF-8
X-Provags-ID: V03:K0:0DY0EnsLnUKZgmsgC92ZAesPJZj8EMO3SZLIDn9YcEXs2RIQidL
47RZesARCz7wmCCIToFzjaFyB0f7k0lLQARtai+I5JjZGBlbzyDdeL1fxkNpnkAU0nLxv/1
UmeAubjG5zk3IMbeNClD/fSmaAIbi/YqUXRx6QalUeuerMyQa7JWpc0+x3yt9GKyCQBoUZ7
naIZyf8WICdU104+K7/ow==
X-UI-Out-Filterresults: notjunk:1;V01:K0:3C9R0hXQaVM=:FYx1NU7PpYZ6U8Qoh8sTTb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X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_LOW
autolearn=ham version=3.3.1
X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on
smtp1.linux-foundation.org
Cc: Bitcoin Dev <bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] Dynamic limit to the block size - BIP draft
discussion
X-BeenThere: bitcoin-dev@lists.linuxfoundation.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: Bitcoin Development Discussion <bitcoin-dev.lists.linuxfoundation.org>
List-Unsubscribe: <https://lists.linuxfoundation.org/mailman/options/bitcoin-dev>,
<mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=unsubscribe>
List-Archive: <http://lists.linuxfoundation.org/pipermail/bitcoin-dev/>
List-Post: <mailto:bitcoin-dev@lists.linuxfoundation.org>
List-Help: <mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=help>
List-Subscribe: <https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev>,
<mailto:bitcoin-dev-request@lists.linuxfoundation.org?subject=subscribe>
X-List-Received-Date: Tue, 08 Sep 2015 14:18:05 -0000
> A selfish mining attack would have to be performed for at least 2000 blocks over a period of 4 weeks in order to achieve a meager 10% increase in the block size.
You seem to be analysing a different attack - I mean that if someone
has enough hashrate to do a selfish mining attack, then setting up a
system that has no means to reduce block-size risks that at a point
where there is excess block-size they can use that free transaction
space to amplify selfish mining instead of collecting transaction
fees.
Adam
|
