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Title: Historical Difficulty? Post by: BTC Economist on June 25, 2011, 12:45:45 AM Does anyone have historical difficulty number and can someone explain what a difficulty number means?
Title: Re: Historical Difficulty? Post by: deepceleron on June 25, 2011, 01:45:43 AM http://bitcoin.sipa.be/ (http://bitcoin.sipa.be/)
and http://en.bitcoin.it/wiki/Difficulty (http://en.bitcoin.it/wiki/Difficulty) Title: Re: Historical Difficulty? Post by: jollyjim on June 25, 2011, 02:05:37 AM https://spreadsheets.google.com/pub?hl=en&hl=en&key=0AmcTCtjBoRWUdHVRMHpqWUJValI1RlZiaEtCT1RrQmc
Title: Re: Historical Difficulty? Post by: cuongnq on June 25, 2011, 02:39:29 AM https://spreadsheets.google.com/pub?hl=en&hl=en&key=0AmcTCtjBoRWUdHVRMHpqWUJValI1RlZiaEtCT1RrQmc What happening if diff too highTitle: Re: Historical Difficulty? Post by: jollyjim on June 25, 2011, 02:44:59 AM The higher the difficulty, the longer it'll take for you to mine. The recent 57% jump in difficulty means you'll average out to making 1/1.57 = 0.636 of what you were making before. So if you were making 1.0 BTC yesterday, today you'll be making 0.636 BTC in the same amount of time (disregarding variance).
Title: Re: Historical Difficulty? Post by: jollyjim on June 25, 2011, 02:56:48 AM And in about 10 days, if the difficulty jumps up another 50%, it'll reduce that 0.636 BTC down by a factor of 1/1.5 = 0.666, which would make it 0.4236 BTC. 10 days after that, another 50% jump would reduce it to 0.2821 BTC, then 0.1879 BTC, etc. This is why you should never estimate earnings with no difficulty increases. 50% increases every 10 days is a lot but it hasn't really been letting up. 33% increases every 10 days is probably more reasonable but even at that slower rate, BTC needs to be at least $30 to possibly break even on new rigs.
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