[Bitcoin-development] Mining Hashrate Caps

Mark Friedenbach mark at monetize.io
Thu Jul 17 13:35:20 UTC 2014

Can someone explain to these guys and the public why promising to limit
yourselves to *only* a 50% chance of successfully double-spending a 6
confirm transaction is still not acceptable?

z=0	P=1
z=1	P=0.828861
z=2	P=0.736403
z=3	P=0.664168
z=4	P=0.603401
z=5	P=0.550625
z=6	P=0.50398
z=7	P=0.462301
z=8	P=0.424782
z=9	P=0.390828
z=10	P=0.359976
z=11	P=0.331858
z=12	P=0.306167
z=13	P=0.282649
z=14	P=0.261083
z=15	P=0.24128
z=16	P=0.223076
z=17	P=0.206324
z=18	P=0.190896
z=19	P=0.176676

On 07/17/2014 06:59 AM, Melvin Carvalho wrote:
> I noticed this article today. 
> GHash Commits to 40% Hashrate Cap at Bitcoin Mining Summit
> http://www.coindesk.com/ghash-commits-40-hashrate-cap-bitcoin-mining-summit/
> Here's a quote from Satoshi when the mining arms race began:
> "We should have a gentleman’s agreement to postpone the GPU arms race as
> long as we can for the good of the network. It’s much easer to get new
> users up to speed if they don’t have to worry about GPU drivers and
> compatibility. It’s nice how anyone with just a CPU can compete fairly
> equally right now."
> Maybe outdated now, but I thought it was interesting.
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