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Date: Tue, 24 Dec 2013 15:53:09 +0800
To: Ryan Carboni <ryan.jc.pc@gmail.com>
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Cc: "bitcoin-development@lists.sourceforge.net"
	<bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] Bitcoin difficulty sanity check suggestion
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Ryan,

Maybe you could test out your ideas somewhere like bitcointalk.org and/or pr=
ovide some more technical substance before engaging with this forum.

Developers tend to prefer dealing with numbers known to be either 1 or 0, no=
t a variable set of possible values depending on non-technical factors ...

Gavin

> On 24/12/2013, at 15:42, "Ryan Carboni" <ryan.jc.pc@gmail.com> wrote:
>=20
> Maybe it's because the arguments being presented are nonsensical and irrel=
evant to the current Bitcoin network topology, composed of a small number of=
 mining pools, not solo miners? Furthermore I think people would realize tha=
t their mining pool has gone "off the reservation" so to speak.
>=20
>=20
>> On Mon, Dec 23, 2013 at 8:05 PM, Allen Piscitello <allen.piscitello@gmail=
.com> wrote:
>> Ryan,
>>=20
>> Why do you continue to try to correct people who clearly have put more th=
ought into this than you?  Everyone understood you just fine, you just seem t=
o have trouble comprehending why your ideas are terrible.
>>=20
>>=20
>>> On Mon, Dec 23, 2013 at 7:51 PM, Ryan Carboni <ryan.jc.pc@gmail.com> wro=
te:
>>> I think you misunderstood my statement. If time > 3 days, and after 4 bl=
ocks have been mined, then difficulty would be reset.
>>>=20
>>> In theory, one would have to isolate roughly one percent of the Bitcoin n=
etwork's hashing power to do so. Which would indicate an attack by a state a=
ctor as opposed to anything else. Arguably, the safest way to run Bitcoin is=
 through a proprietary dial-up network.
>>>=20
>>>=20
>>>> On Sun, Dec 22, 2013 at 7:22 PM, Mark Friedenbach <mark@monetize.io> wr=
ote:
>>>=20
>>>> -----BEGIN PGP SIGNED MESSAGE-----
>>>> Hash: SHA1
>>>>=20
>>>> Ryan, these sort of adjustments introduce security risks. If you were
>>>> isolated from the main chain by a low-hashpower attacker, how would
>>>> you know? They'd need just three days without you noticing that
>>>> network block generation has stalled - maybe they wait for a long
>>>> weekend - then after that the block rate is normal but completely
>>>> controlled by the attacker (and isolated from mainnet).
>>>>=20
>>>> There are fast acting alternative difficulty adjustment algorithms
>>>> being explored by some alts, such as the 9-block interval, 144-block
>>>> window, Parks-McClellan FIR filter used by Freicoin to recover from
>>>> just such a mining bubble. If it were to happen to bitcoin, there
>>>> would be sophisticated alternative to turn to, and enough time to make
>>>> the change.
>>>>=20
>>>> On 12/22/2013 07:10 PM, Ryan Carboni wrote:
>>>> > I think Bitcoin should have a sanity check: after three days if
>>>> > only four blocks have been mined, difficulty should be adjusted
>>>> > downwards.
>>>> >
>>>> > This might become important in the near future. I project a
>>>> > Bitcoin mining bubble.
>>>> >
>>>> -----BEGIN PGP SIGNATURE-----
>>>> Version: GnuPG v1.4.14 (GNU/Linux)
>>>> Comment: GPGTools - http://gpgtools.org
>>>> Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
>>>>=20
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>>>> =3D5Q2H
>>>> -----END PGP SIGNATURE-----
>>>=20
>>>=20
>>> ------------------------------------------------------------------------=
------
>>> Rapidly troubleshoot problems before they affect your business. Most IT
>>> organizations don't have a clear picture of how application performance
>>> affects their revenue. With AppDynamics, you get 100% visibility into yo=
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.clktrk
>>> _______________________________________________
>>> Bitcoin-development mailing list
>>> Bitcoin-development@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/bitcoin-development
>=20
> --------------------------------------------------------------------------=
----
> Rapidly troubleshoot problems before they affect your business. Most IT=20=

> organizations don't have a clear picture of how application performance=20=

> affects their revenue. With AppDynamics, you get 100% visibility into your=
=20
> Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics P=
ro!
> http://pubads.g.doubleclick.net/gampad/clk?id=3D84349831&iu=3D/4140/ostg.c=
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> _______________________________________________
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