Patrick [ARCHIVE] / is on Nostr

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🗓️ Active from 2013-11-05 to 2013-12-08
💬 Posted a total of 2 messages
📚 Participated in the following categories: Bitcoin-development
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2023-06-07 17:10:30

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📅 Original date posted:2013-12-08
📝 Original message:Have you considered black lotus dedicated servers?
On 12/08/2013 03:16 PM, Saïvann Carignan wrote:
>> Issues that would need to be resolved:
>>
>> 1) Who pays for it? Most obvious answer: Foundation. However there's
>> currently a fairly clear line between the foundation website and the
>> bitcoin.org <http://bitcoin.org> website. I personally am fine with the
>> bitcoin foundation funding the website, it's a lot closer to the bitcoin
>> community than github. But some people might care. So next step would be
>> to contact the Foundation board and see if they're willing to fund it.
> Actually I might find way to fund it. But I needed to have ACK &
> comments from developers before anything.
>
>> 2) Anti-DoS? I assume github handles this at the moment, though I doubt
>> there's anything to be gained from DoSing the informational website
> That is a fair question, we will need anti-DDoS. Unless something better
> (and affordable) can be recommended, this would yet put another Bitcoin
> website under CloudFlare.
>
>> 4) Who admins it?
> Obviously, I thought it would be important that the server is owned by
> someone who can be trusted, with ssh access for all core developers.
>
>> 5) Who controls DNS for it?
> I'm not sure we'll get any change on this level. I have no idea if the
> domain is in good hands, except for the fact that nothing bad happened
> thus far. If anything, moving it to core developers (as intended when
> the domain was registered) would make more sense IMO. But again, is it
> possible, I don't know.
>
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2023-06-07 17:10:30

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2023-06-07 17:08:53

- reply

📅 Original date posted:2013-11-05
📝 Original message:The ratio of honest miners that mine the first block they see is > 0.5
Your proposed solution would reduce that ratio to 0.5
In other words your proposed change would make the attack you describe
easier not harder.
On 11/05/2013 09:26 AM, Ittay wrote:
> That sounds like selfish mining, and the magic number is 25%. That's
> the minimal pool size.
> Today the threshold is 0% with good connectivity.
>
> If I misunderstood your point, please elaborate.
>
> Ittay
>
>
>
> On Tue, Nov 5, 2013 at 12:05 PM, Peter Todd <pete at petertodd.org
> <mailto:pete at petertodd.org>> wrote:
>
> On Tue, Nov 05, 2013 at 11:56:53AM -0500, Ittay wrote:
> > Hello,
> >
> > Please see below our BIP for raising the selfish mining threshold.
> > Looking forward to your comments.
>
> <snip>
>
> > 2. No new vulnerabilities introduced:
> > Currently the choice among equal-length chains is done arbitrarily,
> > depending on network topology. This arbitrariness is a source of
> > vulnerability. We replace it with explicit randomness, which is
> at the
> > control of the protocol. The change does not introduce
> executions that were
> > not possible with the old protocol.
>
> Credit goes to Gregory Maxwell for pointing this out, but the random
> choice solution does in fact introduce a vulnerability in that it
> creates incentives for pools over a certain size to withhold blocks
> rather than immediately broadcasting all blocks found.
>
> The problem is that when the pool eventually choses to reveal the
> block
> they mined, 50% of the hashing power switches, thus splitting the
> network. Like the original attack this can be to their benefit. For
> pools over a certain size this strategy is profitable even without
> investing in a low-latency network; Maxwell or someone else can
> chime in
> with the details for deriving that threshold.
>
> I won't get a chance to for a few hours, but someone should do the
> analysis on a deterministic switching scheme.
>
> --
> 'peter'[:-1]@petertodd.org <http://petertodd.org>
> 0000000000000005e25ca9b9fe62bdd6e8a2b4527ad61753dd2113c268bec707
>
>
>
>
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