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From: Adam Back <adam@cypherspace.org>
To: Gareth Williams <gacrux@gmail.com>
Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] Coinbase reallocation to discourage Finney attacks
Date: Mon, 28 Apr 2014 14:41:02 -0700	[thread overview]
Message-ID: <20140428214102.GA8347@netbook.cypherspace.org> (raw)
In-Reply-To: <535CFDB4.1000200@gmail.com>

On Sun, Apr 27, 2014 at 10:53:08PM +1000, Gareth Williams wrote:
>Bitcoin is this perfect /trustless/ mathematical machine [...]
>
>2. the economic majority will not cooperate to reinterpret history
>
> [this proposal was...] replacing it with:
> 
>2. the economic majority will not cooperate to reinterpret history
>against any good guys, only against bad guys; "please trust their good
>judgement."

Nicely put.

I agree the idea of a populist vote to redistribute or remove mining reward
is an inelegant thing which would probably devolve into politics.

I think the reason that it would likely work out badly is that its not
provable, and so no consensus rule can be constructed requiring proof, so
then it risks devolving to a political decision.  

Step 1: Finney attackers for hire anonymize their blocks (publish via Tor,
use a different reward address for each block, and each pool miner). 
Demanding identification of blocks is generally undesirable for the
objective of avoiding centralization and policy abuse.  Dont even think
about demanding identity, there is no identity in a distributed system.

Step 2: people send tracer payments through Finney attackers, and use that
evidence to decide to vote away their reward.  (However the proof is
non-transitive so people can vote anyway they like for any reason).

Step 3: Finney attackers vote down other pools to make the point.

Adam



  parent reply	other threads:[~2014-04-28 21:41 UTC|newest]

Thread overview: 90+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-04-23  7:55 [Bitcoin-development] Coinbase reallocation to discourage Finney attacks Mike Hearn
2014-04-23  9:57 ` Andy Parkins
2014-04-23 11:07   ` Mike Hearn
2014-04-23 11:39     ` Andy Parkins
2014-04-23 11:45       ` Mike Hearn
2014-04-23 13:21         ` Andy Parkins
2014-04-23 13:31           ` Mike Hearn
2014-04-24  9:21             ` Andy Parkins
2014-04-23 12:43 ` Christophe Biocca
2014-04-23 12:51   ` Mike Hearn
2014-04-23 14:52 ` Justus Ranvier
2014-04-23 15:07   ` Mike Hearn
2014-04-23 17:19     ` Justus Ranvier
2014-04-23 17:47       ` Gavin Andresen
2014-04-23 17:49         ` Justus Ranvier
2014-04-23 17:57           ` Mike Hearn
2014-04-23 18:04             ` Justus Ranvier
2014-04-23 18:15               ` Peter Todd
2014-04-23 18:20                 ` Justus Ranvier
2014-04-23 18:37                   ` Mike Hearn
2014-04-23 18:49                     ` Justus Ranvier
2014-04-23 19:01                       ` Drak
2014-04-23 18:58                     ` Tier Nolan
2014-04-23 15:04 ` Alex Mizrahi
2014-04-23 15:09   ` Mike Hearn
2014-04-23 15:38     ` Alex Mizrahi
2014-04-23 16:04       ` Christophe Biocca
2014-04-23 16:19         ` Chris Pacia
2014-04-23 16:21         ` Mike Hearn
2014-04-23 16:33         ` Kevin
2014-04-24 11:22     ` Jorge Timón
2014-04-24 11:43       ` Mike Hearn
2014-04-24 13:57         ` Jorge Timón
2014-04-24 14:28           ` Mike Hearn
2014-04-24 15:37             ` Jorge Timón
2014-04-24 17:07               ` Justus Ranvier
2014-04-25  4:31             ` Gareth Williams
2014-04-25 10:17               ` Mike Hearn
2014-04-25 13:19                 ` Gareth Williams
2014-04-25 15:28                   ` Mike Hearn
2014-04-26 12:15                     ` Gareth Williams
2014-04-27  1:42                       ` Christophe Biocca
2014-04-27 12:53                         ` Gareth Williams
2014-04-27 14:31                           ` Mike Hearn
2014-04-27 23:10                             ` Gareth Williams
2014-04-28 21:41                           ` Adam Back [this message]
2014-04-29 14:13                             ` Mike Hearn
2014-04-29 14:21                               ` Gregory Maxwell
2014-04-29 14:26                                 ` Mike Hearn
2014-04-30 13:12                                   ` Gareth Williams
2014-04-30 13:55                                     ` Mike Hearn
2014-04-30 14:31                                       ` Gareth Williams
2014-04-29 19:29                               ` Justus Ranvier
2014-04-30 13:00                               ` Gareth Williams
2014-04-30 17:06                                 ` Troy Benjegerdes
2014-04-30 17:13                                   ` Jameson Lopp
2014-04-30 14:08                               ` Gareth Williams
2014-04-23 15:28   ` Peter Todd
2014-04-23 15:34 ` Kevin
2014-04-23 15:41   ` Pieter Wuille
2014-04-23 15:55     ` Peter Todd
2014-04-23 18:57 ` Gregory Maxwell
2014-04-23 19:19   ` Mike Hearn
2014-04-23 19:47     ` Gregory Maxwell
2014-04-23 19:59       ` Mike Hearn
2014-04-23 20:24         ` Gregory Maxwell
2014-04-23 20:37           ` Mike Hearn
2014-04-23 20:44             ` Adam Ritter
2014-04-23 20:51               ` Mike Hearn
2014-04-24 15:13                 ` Sergio Lerner
2014-04-24 15:34                   ` Mike Hearn
2014-04-23 20:53               ` Gregory Maxwell
2014-04-23 21:23                 ` Tier Nolan
2014-04-23 21:39                   ` Gregory Maxwell
2014-04-23 22:26                     ` Tier Nolan
2014-04-24  0:55                   ` Tom Harding
     [not found]                 ` <CAKuKjyWDniyP503XSw8=tK9XQW-T58j+VD6ajXCxz=HihN93mQ@mail.gmail.com>
2014-04-24 14:52                   ` [Bitcoin-development] Fwd: " Adam Ritter
2014-04-23 20:41         ` [Bitcoin-development] " Daniel Krawisz
2014-04-23 22:06     ` Alex Mizrahi
2014-04-24  7:58       ` Mike Hearn
2014-04-24  8:19         ` Gregory Maxwell
2014-04-24  8:39           ` Mike Hearn
2014-04-24  9:25             ` Gregory Maxwell
2014-04-24  9:56               ` Mike Hearn
2014-04-24 13:44                 ` Peter Todd
2014-04-24 14:09                   ` Mike Hearn
2014-04-24 14:47                     ` Christophe Biocca
2014-04-24 15:03                       ` Peter Todd
2014-04-24 16:05                         ` Christophe Biocca
2014-04-24 16:14                         ` Mike Hearn

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