[bitcoin-dev] Making AsicBoost irrelevant

Henning Kopp henning.kopp at uni-ulm.de
Wed May 11 10:36:01 UTC 2016

On Wed, May 11, 2016 at 11:21:10AM +0200, Jannes Faber via bitcoin-dev wrote:
> On 11 May 2016 at 05:14, Timo Hanke via bitcoin-dev <
> bitcoin-dev at lists.linuxfoundation.org> wrote:
> > There is no way to tell from a block if it was mined with AsicBoost or
> > not. So you don’t know what percentage of the hashrate uses AsicBoost at
> > any point in time. How can you risk forking that percentage out? Note that
> > this would be a GUARANTEED chain fork. Meaning that after you change the
> > block mining algorithm some percentage of hardware will no longer be able
> > to produce valid blocks. That hardware cannot “switch over” to the majority
> > chain even if it wanted to. Hence you are guaranteed to have two
> > co-existing bitcoin blockchains afterwards.
> >
> > Again: this is unlike the hypothetical persistence of two chains after a
> > hardfork that is only contentious but doesn’t change the mining algorithm,
> > the kind of hardfork you are proposing would guarantee the persistence of
> > two chains.
> >
> Assuming AsicBoost miners are in the minority, their chain will constantly
> get overtaken. So it will not be one endless hard fork as you claim, but
> rather AsicBoost blocks will continue to be ignored (orphaned) until they
> stop making them.

At least until a difficulty adjustment on the AsicBoost chain takes
place. From that point on, both chains, the AsicBoost one and the
forked one will grow approximately at the same speed.

All the best

Henning Kopp
Institute of Distributed Systems
Ulm University, Germany

Office: O27 - 3402
Phone: +49 731 50-24138
Web: http://www.uni-ulm.de/in/vs/~kopp

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