From: Johnson Lau <jl2012@xbt•hk>
To: Sergio Demian Lerner <sergio.d.lerner@gmail•com>
Cc: bitcoin-dev <bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] Some real-world results about the current Segwit Discount
Date: Wed, 10 May 2017 00:27:40 +0800 [thread overview]
Message-ID: <F5DCF911-5FCB-4FA7-8D42-86422CF366E8@xbt.hk> (raw)
In-Reply-To: <CAKzdR-rKQaiKF18j44HjxuHY5pcmPwsce5ab-+zGRDnxjhBQdw@mail.gmail.com>
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No, changing from 50% to 75% is a hardfork. (75 -> 50 is a softfork). Unless you make it pre-scheduled, or leave a special “backdoor” softfork to change the discount.
And that would certainly reduce the max tx/s with 50% discount, also reduce the incentive to spend witness UTXO.
> On 10 May 2017, at 00:19, Sergio Demian Lerner <sergio.d.lerner@gmail•com> wrote:
>
> Thanks Johnson and Hampus for the clarifications.
> However, I would rather do the opposite: soft-fork to 50% now, and soft-fork again to 75% discount later if needed, because it doesn't affect the max transactions/second.
>
> Segwit as it is today should be activated. However if it is not before November, then for the next Segwit attempt I would choose a more conservative 50% discount.
>
>
>
> On Tue, May 9, 2017 at 12:45 PM, Johnson Lau <jl2012@xbt•hk <mailto:jl2012@xbt•hk>> wrote:
>
> > On 9 May 2017, at 21:49, Sergio Demian Lerner via bitcoin-dev <bitcoin-dev@lists•linuxfoundation.org <mailto:bitcoin-dev@lists•linuxfoundation.org>> wrote:
> >
> >
> > So it seems the 75% discount has been chosen with the idea that in the future the current transaction pattern will shift towards multisigs. This is not a bad idea, as it's the only direction Bitcoin can scale without a HF.
> > But it's a bad idea if we end up doing, for example, a 2X blocksize increase HF in the future. In that case it's much better to use a 50% witness discount, and do not make scaling risky by making the worse case block size 8 Mbytes, when it could have been 2*2.7=5.4 Mbytes.
> >
>
> As we could change any parameter in a hardfork, I don’t think this has any relation with the current BIP141 proposal. We could just use 75% in a softfork, and change that to a different value (or completely redefine the definition of weight) with a hardfork later.
>
>
>
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next prev parent reply other threads:[~2017-05-09 16:27 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-08 22:42 Sergio Demian Lerner
2017-05-08 23:47 ` Alphonse Pace
2017-05-09 13:49 ` Sergio Demian Lerner
2017-05-09 14:33 ` James Hilliard
2017-05-09 15:45 ` Johnson Lau
2017-05-09 16:19 ` Sergio Demian Lerner
2017-05-09 16:27 ` Johnson Lau [this message]
2017-05-09 16:27 ` James Hilliard
2017-05-09 18:15 ` Matt Corallo
2017-05-09 18:58 ` Sergio Demian Lerner
2017-05-09 19:15 ` Sergio Demian Lerner
2017-05-09 19:30 ` Gregory Maxwell
2017-05-09 19:42 ` Matt Corallo
2017-05-09 20:13 ` Gregory Maxwell
2017-05-09 20:58 ` Sergio Demian Lerner
2017-05-10 5:37 ` Jorge Timón
2017-05-10 14:05 ` Matt Corallo
2017-05-10 15:25 ` Sergio Demian Lerner
2017-05-10 16:39 ` Matt Corallo
2017-05-10 19:40 ` Sergio Demian Lerner
2017-05-08 23:56 ` Gregory Maxwell
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