[Cryptography] Bitcoin, fork you very much

[Ben Laurie]

On 24 December 2017 at 03:46, John Levine <johnl at iecc.com> wrote:

> In article <CAJN+87FHXW8JqpEUKSLQH5T=5aLg_t4N0-jwpJhXaE3o0qdMAw at mail.
> gmail.com> you write:
> >If China has more then 51% of the hashing power, it could simply block the
> >bitcoin network. This would create a network partition. One blockchain
> >would grow inside China while one would grow outside China. If China has
> >more hashing power, its blockchain would likely grow longer (deeper) then
> >the one outside.
>
> Only in the short run, since the difficulty adjust every two weeks to
> keep the rate about 0.1 block/minute gather there's a little used rule
> that says that when two chains are of the same length the one with
> more work wins,


Eh? That's _always_ the rule. That's what "length" means.


> so if they have more than half of the hashing power
> they'll probably win.  Or if the split's only for a few days, there
> probably won't be time for an adjustment.
>
> R's,
> John
> --
> Regards,
> John Levine, johnl at iecc.com, Primary Perpetrator of "The Internet for
> Dummies",
> Please consider the environment before reading this e-mail. https://jl.ly
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