[bitcoin-dev] BIP proposal: Increase block size limit to 2 megabytes

Samson Mow samson.mow at btcc.com
Tue Feb 9 05:11:56 UTC 2016


Gavin, please don't quote that list on the Classic website. It's horribly
inaccurate and misleading to the general public.

> That testing is happening by the exchange, library, wallet, etc providers
> themselves. There is a list on the Classic home page:
>
> https://bitcoinclassic.com/

I know for a fact that most companies you list there have no intention to
run Classic, much less test it. You should not mix support for 2MB with
support for Classic, or if people say they welcome a fork, to mean they
support Classic.

On Sun, Feb 7, 2016 at 5:11 AM, Peter Todd via bitcoin-dev <
bitcoin-dev at lists.linuxfoundation.org> wrote:

> On Sat, Feb 06, 2016 at 12:45:14PM -0500, Gavin Andresen via bitcoin-dev
> wrote:
> > On Sat, Feb 6, 2016 at 12:01 PM, Adam Back <adam at cypherspace.org> wrote:
> >
> > >
> > > It would probably be a good idea to have a security considerations
> > > section
> >
> >
> > Containing what?  I'm not aware of any security considerations that are
> any
> > different from any other consensus rules change.
>
> I covered the security considerations unique to hard-forks on my blog:
>
> https://petertodd.org/2016/soft-forks-are-safer-than-hard-forks
>
> > > , also, is there a list of which exchange, library, wallet,
> > > pool, stats server, hardware etc you have tested this change against?
> > >
> >
> > That testing is happening by the exchange, library, wallet, etc providers
> > themselves. There is a list on the Classic home page:
> >
> > https://bitcoinclassic.com/
>
> How do we know any of this testing is actually being performed? I don't
> currently know of any concrete testing actually done.
>
> > > Do you have a rollback plan in the event the hard-fork triggers via
> > > false voting as seemed to be prevalent during XT?  (Or rollback just
> > > as contingency if something unforseen goes wrong).
> > >
> >
> > The only voting in this BIP is done by the miners, and that cannot be
> faked.
>
> Are you unaware of Not Bitcoin XT?
>
> https://bitcointalk.org/index.php?topic=1154520.0
>
> > I can't imagine any even-remotely-likely sequence of events that would
> > require a rollback, can you be more specific about what you are
> imagining?
> > Miners suddenly getting cold feet?
>
> See above.
>
> Also, as the two coins are separate currencies and can easily trade
> against each other in a 75%/25% split, it would be easy for the price to
> diverge and hashing power to move.
>
> In fact, I've been asked multiple times now by exchanges and other
> players in this ecosystem for technical advice on how to split coins
> across the chains effectively (easily done with nLockTime). Notably, the
> exchanges who have asked me this - who hold customer funds on their
> behalf - have informed me that their legal advice was that the
> post-hard-fork coins are legally speaking separate currencies, and
> customers must be given the opportunity to transact in them separately
> if they choose too.  Obviously, with a 75%/25% split, while block times
> on the other chain will be slower, the chain is still quite useful and
> nearly as secure as the main chain against 51% attack; why I personally
> have suggested a 99% threshold:
>
>
> http://lists.linuxfoundation.org/pipermail/bitcoin-dev/2016-January/012309.html
>
> (remember that the threshold can always be soft-forked down)
>
> It's also notable that millions of dollars of Bitcoin are voting agsast
> the fork on the proof-of-stake voting site Bitcoinocracy.com While
> obviously not comprehensive, the fact that a relatively obscure site
> like it can achieve participation like that, even without an easy to use
> user friendly interface.
>
> > > How do you plan to monitor and manage security through the hard-fork?
> > >
> >
> > I don't plan to monitor or manage anything; the Bitcoin network is
> > self-monitoring and self-managing. Services like statoshi.info will do
> the
> > monitoring, and miners and people and businesses will manage the network,
> > as they do every day.
>
> Please provide details on exactly how that's going to happen.
>
> --
> https://petertodd.org 'peter'[:-1]@petertodd.org
> 000000000000000008320874843f282f554aa2436290642fcfa81e5a01d78698
>
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