As usual I do bitcoincharts and bitcoinwisdom one runs low one runs high. so 1.85 to 5.07 is the guess for now.
I also added a section on diff since May of 2013 when asics started to be available via asic miner
https://bitcoinwisdom.com/bitcoin/difficultyBitcoin Difficulty: 35,002,482,026
Estimated Next Difficulty: 36,778,460,333 (+5.07%)
Adjust time: After 1733 Blocks, About 11.5 days
Hashrate(?): 254,506,225 GH/s
Block Generation Time(?):
1 block: 9.6 minutes
3 blocks: 28.8 minutes
6 blocks: 57.5 minutes
http://www.bitcoincharts.com/Difficulty 35002482026
Estimated 35650025649 in 1733 blks
(+1.85%).
Network total 244719.395 Thash/s
Blocks/hour 5.86 / 614 s
Difficulty History of asics and btc
I divide the diff jumps into 3 sections. I realize that cut off is arbitrary some will say I should go back to the first Avalon's of Jan 2013 for Early asic not May of 2013 but in May of 2013 asic miner was doing good sales of the little .333gh block erupters so I used May of 2013 as a starting point.
With the maturity of asics growth has finally become slower.
Asic maturity days So far we are about 104 days into the mature 28mn chips. So far this is about a 9.77% avg for this time period. I see it going lower then 9.77 % due to power cost and of course price in fiat.
Date--------- Difficulty--- Change----- Hash Rate
Oct 09 2014 35,002,482,026 0.98% 250,557,526 GH/s
Sep 25 2014 34,661,425,924 16.20% 248,116,151 GH/s
Sep 13 2014 29,829,733,124 8.75% 213,529,547 GH/s
Aug 31 2014 27,428,630,902 15.03% 196,341,788 GH/s
Aug 19 2014 23,844,670,039 20.86% 170,686,797 GH/s
Aug 08 2014 19,729,645,941 5.30% 141,230,307 GH/s
Jul 25 2014 18,736,441,558 8.08% 134,120,673 GH/s
Jul 12 2014 17,336,316,979 3.08% 124,098,191 GH/s
Asic expansion days
Nov 29 2013 to June 29 2014 = 213 days about 19.22%
Jun 29 2014 16,818,461,371 24.93% 120,391,236 GH/s 23.77
Jun 18 2014 13,462,580,115 14.51% 96,368,902 GH/s
Jun 05 2014 11,756,551,917 12.44% 84,156,677 GH/s
May 24 2014 10,455,720,138 18.10% 74,844,960 GH/s 14.782
May 12 2014 8,853,416,309 10.66% 63,375,223 GH/s
Apr 29 2014 8,000,872,136 14.64% 57,272,474 GH/s
Apr 17 2014 6,978,842,650 14.04% 49,956,502 GH/s
Apr 05 2014 6,119,726,089 22.23% 43,806,706 GH/s
Mar 24 2014 5,006,860,589 17.80% 35,840,504 GH/s 7.0783
Mar 13 2014 4,250,217,920 11.39% 30,424,245 GH/s
Feb 28 2014 3,815,723,799 21.92% 27,314,015 GH/s
Feb 17 2014 3,129,573,175 19.39% 22,402,357 GH/s 4.4245
Feb 05 2014 2,621,404,453 19.49% 18,764,744 GH/s
Jan 24 2014 2,193,847,870 22.59% 15,704,175 GH/s
Jan 13 2014 1,789,546,951 26.16% 12,810,076 GH/s
Jan 02 2014 1,418,481,395 20.12% 10,153,885 GH/s
Dec 21 2013 1,180,923,195 30.01% 8,453,378 GH/s
Dec 10 2013 908,350,862 28.41% 6,502,229 GH/s
Early asic days
May 12 2013 to Nov 29 2013 = 201 daysNov 29 2013 707,408,283 16.07% 5,063,826 GH/s
Nov 17 2013 609,482,680 19.29% 4,362,847 GH/s
Nov 05 2013 510,929,738 30.70% 3,657,378 GH/s
Oct 26 2013 390,928,788 46.02% 2,798,377 GH/s
Oct 16 2013 267,731,249 41.45% 1,916,495 GH/s
Oct 06 2013 189,281,249 27.19% 1,354,928 GH/s
Sep 25 2013 148,819,200 32.13% 1,065,289 GH/s
Sep 14 2013 112,628,549 29.56% 806,227 GH/s
Sep 04 2013 86,933,018 32.22% 622,291 GH/s
Aug 24 2013 65,750,060 29.40% 470,657 GH/s
Aug 13 2013 50,810,339 35.88% 363,715 GH/s
Aug 03 2013 37,392,766 19.63% 267,668 GH/s
Jul 22 2013 31,256,961 19.47% 223,746 GH/s
Jul 11 2013 26,162,876 22.63% 187,281 GH/s
Jun 29 2013 21,335,329 10.32% 152,724 GH/s
Jun 16 2013 19,339,258 23.92% 138,436 GH/s
Jun 05 2013 15,605,633 28.41% 111,709 GH/s
May 25 2013 12,153,412 8.64% 86,998 GH/s
May 12 2013 11,187,257 11.03% 80,082 GH/s