<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On 24 December 2017 at 03:46, John Levine <span dir="ltr"><<a href="mailto:johnl@iecc.com" target="_blank">johnl@iecc.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">In article <CAJN+87FHXW8JqpEUKSLQH5T=<a href="mailto:5aLg_t4N0-jwpJhXaE3o0qdMAw@mail.gmail.com">5aLg<wbr>_t4N0-jwpJhXaE3o0qdMAw@mail.<wbr>gmail.com</a>> you write:<br>
>If China has more then 51% of the hashing power, it could simply block the<br>
>bitcoin network. This would create a network partition. One blockchain<br>
>would grow inside China while one would grow outside China. If China has<br>
>more hashing power, its blockchain would likely grow longer (deeper) then<br>
>the one outside.<br>
<br>
Only in the short run, since the difficulty adjust every two weeks to<br>
keep the rate about 0.1 block/minute gather there's a little used rule<br>
that says that when two chains are of the same length the one with<br>
more work wins,</blockquote><div><br></div><div>Eh? That's _always_ the rule. That's what "length" means.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> so if they have more than half of the hashing power<br>
they'll probably win.  Or if the split's only for a few days, there<br>
probably won't be time for an adjustment.<br>
<br>
R's,<br>
John<br>
<span class="HOEnZb"><font color="#888888">--<br>
Regards,<br>
John Levine, <a href="mailto:johnl@iecc.com">johnl@iecc.com</a>, Primary Perpetrator of "The Internet for Dummies",<br>
Please consider the environment before reading this e-mail. <a href="https://jl.ly" rel="noreferrer" target="_blank">https://jl.ly</a><br>
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