Questiosn about BIP100

Questiosn about BIP100
2015-08-24 14:40 ` Jeff Garzik
  
From: Andrew C @ 2015-08-21 23:38 UTC (permalink / raw)
  To: bitcoin-dev

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Hi all,

Is there any client or code that currently implements BIP 100? And how will
it be deployed? WIll the initial fork be deployed in the same manner that
the max block size changes are deployed described in the bip?

Thanks

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2015-08-21 23:38 [bitcoin-dev] Questiosn about BIP100 Andrew C

  2015-08-27 15:07   ` Andrew C
  
From: Jeff Garzik @ 2015-08-24 14:40 UTC (permalink / raw)
  To: Andrew C;  Bitcoin development mailing list

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Great questions.

- Currently working on technical BIP draft and implementation, hopefully
for ScalingBitcoin.org.  Only the PDF is publicly available as of today.
- Yes, the initial deployment is in the same manner as size votes.


On Fri, Aug 21, 2015 at 7:38 PM, Andrew C via bitcoin-dev <
bitcoin-dev@lists•linuxfoundation.org> wrote:

> Hi all,
>
> Is there any client or code that currently implements BIP 100? And how
> will it be deployed? WIll the initial fork be deployed in the same manner
> that the max block size changes are deployed described in the bip?
>
> Thanks
>
> _______________________________________________
> bitcoin-dev mailing list
> bitcoin-dev@lists•linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>
>

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2015-08-24 14:40 ` Jeff Garzik

  2015-08-27 20:49     ` Jeff Garzik
  
From: Andrew C @ 2015-08-27 15:07 UTC (permalink / raw)
  To: Jeff Garzik;  Bitcoin development mailing list

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I have been reading the pdf and one thing I can't figure out is what you
mean by "most common floor". Is that the smallest block size that has a
vote or the block size with the most votes or something else?

On Mon, Aug 24, 2015 at 10:40 AM Jeff Garzik <jgarzik@gmail•com> wrote:

> Great questions.
>
> - Currently working on technical BIP draft and implementation, hopefully
> for ScalingBitcoin.org.  Only the PDF is publicly available as of today.
> - Yes, the initial deployment is in the same manner as size votes.
>
>
> On Fri, Aug 21, 2015 at 7:38 PM, Andrew C via bitcoin-dev <
> bitcoin-dev@lists•linuxfoundation.org> wrote:
>
>> Hi all,
>>
>> Is there any client or code that currently implements BIP 100? And how
>> will it be deployed? WIll the initial fork be deployed in the same manner
>> that the max block size changes are deployed described in the bip?
>>
>> Thanks
>>
>> _______________________________________________
>> bitcoin-dev mailing list
>> bitcoin-dev@lists•linuxfoundation.org
>> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>>
>>
>

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2015-08-27 15:07   ` Andrew C

  2015-08-28  3:02       ` jl2012
  
From: Jeff Garzik @ 2015-08-27 20:49 UTC (permalink / raw)
  To: Andrew C;  Bitcoin development mailing list

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20th percentile, though there is some argument to take the 'mode' of
several tranches


On Thu, Aug 27, 2015 at 11:07 AM, Andrew C <achow101@gmail•com> wrote:

> I have been reading the pdf and one thing I can't figure out is what you
> mean by "most common floor". Is that the smallest block size that has a
> vote or the block size with the most votes or something else?
>
> On Mon, Aug 24, 2015 at 10:40 AM Jeff Garzik <jgarzik@gmail•com> wrote:
>
>> Great questions.
>>
>> - Currently working on technical BIP draft and implementation, hopefully
>> for ScalingBitcoin.org.  Only the PDF is publicly available as of today.
>> - Yes, the initial deployment is in the same manner as size votes.
>>
>>
>> On Fri, Aug 21, 2015 at 7:38 PM, Andrew C via bitcoin-dev <
>> bitcoin-dev@lists•linuxfoundation.org> wrote:
>>
>>> Hi all,
>>>
>>> Is there any client or code that currently implements BIP 100? And how
>>> will it be deployed? WIll the initial fork be deployed in the same manner
>>> that the max block size changes are deployed described in the bip?
>>>
>>> Thanks
>>>
>>> _______________________________________________
>>> bitcoin-dev mailing list
>>> bitcoin-dev@lists•linuxfoundation.org
>>> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>>>
>>>
>>

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2015-08-27 20:49     ` Jeff Garzik

  
From: jl2012 @ 2015-08-28  3:02 UTC ( / )
  To: Jeff Garzik;  Bitcoin development mailing list

Mode could be ruled out immediately. Just consider this: 34% 8MB, 33% 
1.5MB, 33% 1.2MB

I personally believe the median is the most natural and logical choice. 
51% of miners can always force the 49% to follow the simple majority 
choice through a 51% attack. Using median will eliminate the incentive 
to 51% attack due to this reason. The incentive to 51% attack will exist 
when you use any value other than 50-percentile. The further it is from 
50, the bigger the incentive.

Having said that, I don't think it is an absolutely bad idea to use a 
value other than 50-percentile. The exact value is debatable.

However, if you use something other than median, you should make it 
symmetrical. For example, the block size will increase if the 
20-percentile is bigger than the current limit, and the block size will 
decrease if the 80-percentile is smaller than the current limit.




Jeff Garzik via bitcoin-dev 於 2015-08-27 16:49 寫到:
> 20th percentile, though there is some argument to take the 'mode' of
> several tranches
> 
> On Thu, Aug 27, 2015 at 11:07 AM, Andrew C <achow101@gmail•com> wrote:
> 
>> I have been reading the pdf and one thing I can't figure out is what
>> you mean by "most common floor". Is that the smallest block size
>> that has a vote or the block size with the most votes or something
>> else?
>> 
>> On Mon, Aug 24, 2015 at 10:40 AM Jeff Garzik <jgarzik@gmail•com>
>> wrote:
>> 
>> Great questions.
>> 
>> - Currently working on technical BIP draft and implementation,
>> hopefully for ScalingBitcoin.org. Only the PDF is publicly
>> available as of today.
>> - Yes, the initial deployment is in the same manner as size votes.
>> 
>> On Fri, Aug 21, 2015 at 7:38 PM, Andrew C via bitcoin-dev
>> <bitcoin-dev@lists•linuxfoundation.org> wrote:
>> 
>> Hi all,
>> 
>> Is there any client or code that currently implements BIP 100? And
>> how will it be deployed? WIll the initial fork be deployed in the
>> same manner that the max block size changes are deployed described
>> in the bip?
>> 
>> Thanks
>> 
>> _______________________________________________
>> bitcoin-dev mailing list
>> bitcoin-dev@lists•linuxfoundation.org
>> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev [1]
> 
> 
> 
> Links:
> ------
> [1] 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