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From: Geir Harald Hansen <operator@bitminter.com>
To: bitcoin-dev@lists.linuxfoundation.org
Subject: Re: [bitcoin-dev] We need to fix the block withholding attack
Date: Sun, 27 Dec 2015 05:10:09 +0100	[thread overview]
Message-ID: <567F64A1.8020202@bitminter.com> (raw)
In-Reply-To: <CAP3QyGJD3SaM6Bvvw66jAvVFkQhrfJfRQTxbbe8a=O1zK_P6tw@mail.gmail.com>

Last I heard it was believed the miner had made their own mining client
and that the block withholding was a bug, not an intended feature.

On 26.12.2015 09:12, Multipool Admin via bitcoin-dev wrote:
> Any attempt to 'fix' this problem, would most likely require changes to
> all mining software, why not just make mining more decentralized in general?
> 
> For example, allow anyone to submit proofs of work to Bitcoind that are
> some fraction of the network difficulty and receive payment for them if
> they're valid.  This would also encourage the proliferation of full
> nodes since anyone could solo mine again.  Then, the next coinbase
> transaction could be split among, say, the top 100 proofs of work.
> 
> Eligius already does their miner payouts like this.
> 
> If you want to fix an issue with mining, fix the selfish mining issue
> first as it's a much larger and more dangerous potential issue.
> 
> I don't believe it was ever clearly established whether Eligius suffered
> a block withholding attack or was just the victim of a miner with (what
> was, at the time) a large amount of faulty hardware, however, from the
> Bitcointalk threads at the time I believe it was assumed to be the latter.
> 
> --Adam
> 
> 
> On Sat, Dec 19, 2015 at 8:44 PM, Peter Todd via bitcoin-dev
> <bitcoin-dev@lists.linuxfoundation.org
> <mailto:bitcoin-dev@lists.linuxfoundation.org>> wrote:
> 
>     On Sat, Dec 19, 2015 at 07:43:59PM -0800, Chris Priest via
>     bitcoin-dev wrote:
>     > Then shouldn't this be something the pool deals with, not the bitcoin protocol?
> 
>     There is no known way for pools - especially ones that allow anonymous
>     hashers - to effectively prevent block withholding attacks without
>     changing the Bitcoin protocol.
> 
>     --
>     'peter'[:-1]@petertodd.org <http://petertodd.org>
>     00000000000000000188b6321da7feae60d74c7b0becbdab3b1a0bd57f10947d
> 
>     _______________________________________________
>     bitcoin-dev mailing list
>     bitcoin-dev@lists.linuxfoundation.org
>     <mailto:bitcoin-dev@lists.linuxfoundation.org>
>     https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
> 
> 
> 
> 
> _______________________________________________
> bitcoin-dev mailing list
> bitcoin-dev@lists.linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
> 



  reply	other threads:[~2015-12-27  4:10 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-19 18:42 [bitcoin-dev] We need to fix the block withholding attack Peter Todd
2015-12-19 19:30 ` Bob McElrath
2015-12-19 20:03 ` jl2012
2015-12-20  3:34 ` Chris Priest
2015-12-20  3:36   ` Matt Corallo
2015-12-20  3:43     ` Chris Priest
2015-12-20  4:44       ` Peter Todd
2015-12-26  8:12         ` Multipool Admin
2015-12-27  4:10           ` Geir Harald Hansen [this message]
2015-12-28 19:12           ` Peter Todd
2015-12-28 19:30             ` Emin Gün Sirer
2015-12-28 19:35               ` Multipool Admin
2015-12-28 19:33             ` Multipool Admin
2015-12-28 20:26             ` Ivan Brightly
2015-12-29 18:59               ` Dave Scotese
2015-12-29 19:08                 ` Jonathan Toomim
2015-12-29 19:25                 ` Allen Piscitello
2015-12-29 21:51                   ` Dave Scotese
2015-12-20  3:40   ` jl2012
2015-12-20  3:47     ` Chris Priest
2015-12-20  4:24       ` jl2012
2015-12-20  5:12         ` Emin Gün Sirer
2015-12-20  7:39           ` Chris Priest
2015-12-20  7:56             ` Emin Gün Sirer
2015-12-20  8:30               ` Natanael
2015-12-20 11:38           ` Tier Nolan
2015-12-20 12:42             ` Natanael
2015-12-20 15:30               ` Tier Nolan
2015-12-20 13:28           ` Peter Todd
2015-12-20 17:00             ` Emin Gün Sirer
2015-12-21 11:39               ` Jannes Faber
2015-12-25 11:15                 ` Ittay
2015-12-25 12:00                   ` Jonathan Toomim
2015-12-25 12:02                   ` benevolent
2015-12-25 16:11                   ` Jannes Faber
2015-12-26  0:38               ` Geir Harald Hansen
2015-12-28 20:02               ` Peter Todd
2015-12-26  8:23             ` Eric Lombrozo
2015-12-26  8:26               ` Eric Lombrozo
2015-12-26 15:33               ` Jorge Timón
2015-12-26 17:38                 ` Eric Lombrozo
2015-12-26 18:01                   ` Jorge Timón
2015-12-26 16:09               ` Tier Nolan
2015-12-26 18:30                 ` Eric Lombrozo
2015-12-26 19:34                   ` Jorge Timón
2015-12-26 21:22               ` Jonathan Toomim
2015-12-27  4:33                 ` Emin Gün Sirer

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