Bitcoin networks surpasses 2^80 hashes per week

Ryan Carboni ryacko at gmail.com
Mon Dec 8 09:44:22 PST 2014


24 = hours
60 = minutes
7 = days

so I'm only off by a factor of 2^3.3, not by a factor of 2^9.3


Cheers.

On Mon, Dec 8, 2014 at 3:23 AM, Joseph Birr-Pixton <jpixton at gmail.com>
wrote:

> On 8 December 2014 at 10:40, Ryan Carboni <ryacko at gmail.com> wrote:
> > https://blockexplorer.com/q/hashestowin
> > log(171833398380382098659*24*60*7)/log(2)
>
> I think your calculation is slightly off. hashestowin is the average
> number of hashes you need to perform to win the current block. It's
> not necessarily the case that a block is calculated each second: in
> fact one is found (on average) each 625 seconds[1].
>
> So that gives:
>
> >>> log(171833398380382098659*24*60*7/625)/log(2)
> 71.23
>
> Cheers,
> Joe
>
> [1] https://blockexplorer.com/q/interval
>
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