predictions of future difficulty

[professor21]

well I'm showing an average difficulty increase of 4.985% over the last 12 months on average during each time period.  I'm not sure where you get 2%?  I eventually break even at 225 days with 0 electricity but the profit after a year is terrible.
Further it sounds reasonable that with difficulty increases you will need latest generation hardware to maintain revenue and profit

[Amph]

well I'm showing an average difficulty increase of 4.985% over the last 12 months on average during each time period.  I'm not sure where you get 2%?  I eventually break even at 225 days with 0 electricity but the profit after a year is terrible.
Further it sounds reasonable that with difficulty increases you will need latest generation hardware to maintain revenue and profit

you just need then, to sell your miner at some point(maybe before roi, to get roi faster) and buy the next HW generation, this how it work, you need to stay competitive in this crazy mining race

also electricity isn't acutally increasing per day  and every single day, so your roi might be more early than that

[philipma1957]

well I'm showing an average difficulty increase of 4.985% over the last 12 months on average during each time period.  I'm not sure where you get 2%?  I eventually break even at 225 days with 0 electricity but the profit after a year is terrible.
Further it sounds reasonable that with difficulty increases you will need latest generation hardware to maintain revenue and profit

Here is the chart.  I bolded 2 lines  Oct 09 2014 to Jun 28 2015

We went from 35,002,482,026  to 49,402,014,931  

20 adjustments  the increase avg is  under 1.85%

The industry has had defining points in diff.  one was the s-3 introduction

another was the s-5, sp20, sp31 introduction.

In both cases diff rate dropped.  Putting in 2% as the correct number for future diff is not wrong. Based on  last 20 weeks it is too high.

Always remember past performance means nothing in predicting future performance.

Still I use 2% in my calculations.  I feel okay with it.

-------------------------------Difficulty History--------------------

Date   Difficulty   Change   Hash Rate
Jun 28 2015   49,402,014,931   -0.58%   353,633,397 GH/s
Jun 14 2015   49,692,386,355   4.42%   355,711,957 GH/s
May 31 2015   47,589,591,154   -2.50%   340,659,563 GH/s
May 17 2015   48,807,487,245   2.44%   349,377,603 GH/s
May 03 2015   47,643,398,018   0.07%   341,044,727 GH/s
Apr 19 2015   47,610,564,513   -3.71%   340,809,696 GH/s
Apr 05 2015   49,446,390,688   5.84%   353,951,052 GH/s
Mar 22 2015   46,717,549,645   -1.50%   334,417,246 GH/s
Mar 08 2015   47,427,554,951   1.59%   339,499,662 GH/s
Feb 22 2015   46,684,376,317   5.01%   334,179,783 GH/s
Feb 09 2015   44,455,415,962   7.71%   318,224,263 GH/s
Jan 27 2015   41,272,873,895   -6.14%   295,442,739 GH/s
Jan 12 2015   43,971,662,056   8.20%   314,761,417 GH/s   a low point of 180 a coin occured
Dec 30 2014   40,640,955,017   3.00%   290,919,288 GH/s
Dec 17 2014   39,457,671,307   -1.37%   282,449,013 GH/s
Dec 02 2014   40,007,470,271   -0.73%   286,384,627 GH/s   s-5 started
Nov 18 2014   40,300,030,328   1.76%   288,478,854 GH/s   Sp20 started
Nov 05 2014   39,603,666,252   10.05%   283,494,086 GH/s
Oct 23 2014   35,985,640,265   2.81%   257,595,247 GH/s
Oct 09 2014   35,002,482,026   0.98%   250,557,526 GH/s   Sp31 started




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    This set of diff is better then the prior set
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


Jun 29 2014   16,818,461,371   24.93%   120,391,236 GH/s        S-3 sales began
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
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
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   This set is with s-1 and s-2 as the best miners around diff jumped a lot
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                       also highest    coin prices were during this time
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
Nov 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        Knc miners dropped and coins prices were sky rocketing

[professor21]

yeah I'm showing about 1.54% when I add the actual difficulty/20 and take quotient/current difficulty.  but on the calculator it still shows that some miners are at infinity break even.

how do the mining farms make money or are they just losing money now and trying to sell?

[philipma1957]

yeah I'm showing about 1.54% when I add the actual difficulty/20 and take quotient/current difficulty.  but on the calculator it still shows that some miners are at infinity break even.

how do the mining farms make money or are they just losing money now and trying to sell?

Well lets say I have a farm in Washington State.

I cut a deal with bitmaintech for 1000 s-5's

  I did this in JAN 2015  when the price war between bitmaintech and sp-tech was happening.

 My older brother is fluent in Chinese and has spent years in Taiwan and mainland China.

I have a cousin in the correct county in Washington state with a decent piece of land.

I have an electrical contract for 1 megawatt of power  at 4 cents.

Some quick math.

 I built a building on my cousins land for 100k

I paid 250k for the gear.
 that is 350k  add another  50k so I am 400k out of pocket on Jan 27 2015.

my 1000 units run at 1200gh each and use 620 kwatts  this is  620 x 24 = 14880  x .04 = 595 usd a day say 600 usd a day  or 18000 usd a month add 2000 more and we are at 20000 a month to run the gear   or about 110000 up to date

so 400k + 110k = 510 k out of pocket .

  the diff from jan 27th until now = 46b

and  1200th or 1.2ph earns 100,400  a month at the current prices..  so jan 27 to june 27 = 5 months I earned 502000.  against 510k out of pocket.

7 days June 27th to July = 3347 a day x 7 = 23,427     which means  510 out 525 in  plus 15 k and I still have the farm  even if 50 machine died I still have 1000 psu's and 950 s-5's.

I can sell them off or continue to mine.  If I sell an s-5  plus the psu for 325 on this site  I am looking at 325,000 in sales.

Or I can mine until the bitter end on the gear.  So I turn 510 k into 800 k in less then 6 months.

[jonnybravo0311]

Remember, too, that in Phil's story, he started from scratch.  No building, no hardware, no nothing.  Less than 6 months in he's made 300k.  That's how the farms make their coin.  Places with cheaper building costs and cheaper electricity make even more of a profit.

Even if Phil, "mines to the bitter end" as he stated, he's still got the space, which has now completely paid for itself, a bunch of hardware that he could sell (all profit since it's paid for itself), etc.

There's definitely money to be made in this game.

[philipma1957]

Remember, too, that in Phil's story, he started from scratch.  No building, no hardware, no nothing.  Less than 6 months in he's made 300k.  That's how the farms make their coin.  Places with cheaper building costs and cheaper electricity make even more of a profit.

Even if Phil, "mines to the bitter end" as he stated, he's still got the space, which has now completely paid for itself, a bunch of hardware that he could sell (all profit since it's paid for itself), etc.

There's definitely money to be made in this game.

the key is cheap power and money that you can lose.    I can weave 3 or 4 other examples  all involve power under 5 cents. and getting a discount  on the gear.

[BettingBlocks]

There are some gambling sites that allow you to bet on future difficulty.

and we recently launched a game that lets you bet on which mining pool which mine future blocks:

https://bitcointalk.org/index.php?topic=1105376.0

[alh]

There are some gambling sites that allow you to bet on future difficulty.

and we recently launched a game that lets you bet on which mining pool which mine future blocks:

https://bitcointalk.org/index.php?topic=1105376.0

While I guess it's possible that they have repealed the "laws of gambling", I'll bet that the motto "The house always wins" still applies.

Proceed with caution!!!

[professor21]

wow that's great that you made 300k!!!  but realistically isn't there some chance the bitcoin price could go to 0 at some point in the future?
I wrote bitmain and they were all hush hush about any info on the s7

[jonnybravo0311]

wow that's great that you made 300k!!!  but realistically isn't there some chance the bitcoin price could go to 0 at some point in the future?
I wrote bitmain and they were all hush hush about any info on the s7

This was an example... not a real scenario.  It was concocted to show that there is money to be made by mining.  People who have access to decent startup capital, cheap electricity, cheap hardware, cheap land, cheap employees, cheap buildings, etc, make money.