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From: Adam Ritter <aritter@gmail.com>
To: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] Coinbase reallocation to discourage Finney attacks
Date: Wed, 23 Apr 2014 22:44:29 +0200	[thread overview]
Message-ID: <CAKuKjyV+FQs1goNK1uWXVg7ky4aGiROcTZ5idM3Ug2-+5bTc2w@mail.gmail.com> (raw)
In-Reply-To: <CANEZrP2t09bzmDkkWK3V2GpqEt54KhFnUQ8_u9ULMqniMaOA8Q@mail.gmail.com>

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Isn't a faster blockchain for transactions (maybe as a sidechain) solving
the problem? If there would be a safe way for 0-confirmation transactions,
the Bitcoin blockchain wouldn't even be needed.


On Wed, Apr 23, 2014 at 10:37 PM, Mike Hearn <mike@plan99.net> wrote:

> On Wed, Apr 23, 2014 at 10:24 PM, Gregory Maxwell <gmaxwell@gmail.com>wrote:
>
>> Right, this works in the Bitcoin network today absent any collusion by
>> the miners. You give one miner a transaction and you give every other
>> node you can reach another transaction.
>>
>
> Yes, but that can be fixed with double spend alerts.
>
>
>> Someone you ask to not double spend is an entirely separate matter.
>> They aren't self-selecting: you select who you trust to not make
>> double spends and there is no need for this trust to be globally
>> consistent.
>>
>
> No? It's not just your decision that matters, the receiver also has to
> trust them. They're like a dispute mediator in this regard. You can pick
> whoever you want, but that doesn't matter if the receiver doesn't recognise
> them or trust them. You have to find an overlap to make an instant trade.
>
> In practice if people have to think about this, evaluate brands etc then
> you'd get a very small number of parties because the value of global
> agreement is so high. Then it becomes hard to remove ones that have a lot
> of momentum.
>
> The censorship resistance of the block chain doesn't matter if your double
> spending partners refuse to help you spend your money (because they're
> being coerced). The censorship can just happen at a different place.
>
>
>> To stop GHash.io we would have to take away their hardware or change the
>> Bitcoin
>> protocol to make their hardware useless
>>
>
> ..... or, have a majority decide to zero out their coinbase rewards for
> blocks that double spent against dice sites. That wouldn't undo the double
> spend, but you can't do that with the multisig scheme either. All you can
> do is punish the corrupted party post-hoc, either by not using them again,
> or by "unpaying" them for the service they did not provide.
>
>
>
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  reply	other threads:[~2014-04-23 20:44 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
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 [this message]
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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