mining decrease of 50% last month

[fm76]

Hi, it's normal a decrease of 50% of payment in the last month?
It's the same for you?
Francesco

[C.Steven]

Seems like you have entered the mining world before understanding how "difficulty" works.

Bitcoin difficulty changes every 2016 blocks (~10min a block, so ~14 days total).
If it takes less than 14 days to find 2016 blocks, the difficulty goes up, and vice versa.

You can see difficulty changed every 12-13 days for the previous month, and so the difficulty went up ~20% every 12-13 days.
http://bitcoinwisdom.com/bitcoin/difficulty

[cranial.nerve]

It will decreased again in the next month, see:

http://bitcoin.sipa.be/speed-small-lin-ever.png

http://bitcoin.sipa.be/

[cloverme]

What I typically notice is a about a 12% decrease in revenue with every difficulty jump over 27%. What seems to level it out is to add about 8gh/s for every percentage point increase in difficulty for every difficulty jump.

[DeathAndTaxes]

What I typically notice is a about a 12% decrease in revenue with every difficulty jump over 27%.

Um you should "notice" you get 1/1.27 revenue when difficulty increases 27% or difficulty increases x% you now earn 1/(1+x%) compared to prior to the increase.  Anything else is simply short term variance.  

[mecoin]

Hi, it's normal a decrease of 50% of payment in the last month?
It's the same for you?
Francesco

it´s the same for everyone 

[fm76]

Sorry i forgot an important thing...
I'm mining on multipool the most profictable altcoin , not directly bitcoin and then exchange in bitcoin.
In your opinion the decrease could be the same, is directly related to bitcoin diff?
Thank you in advance.
Francesco

[00ph8al]

Then it depends on the difficulty of the coin you are mining and the price of BTC when you exchange up.

[fm76]

Ok difficulty and exchange price.
But these are two independent variable or not? this is the question at the end, in order to make a comparsion.

[Ekaros]

Ok difficulty and exchange price.
But these are two independent variable or not? this is the question at the end, in order to make a comparsion.

They are loosely coupled, but difficulty moves much slower than the price.

Difficulty should follow the price, but with delay and limited change.

In basic sense price drives difficulty to state where costs of mining is near the produced coins' value... That is if price increases, more is invested to mining and thus difficulty will eventually rise to match it. Same should work in reverse if price where to drop in future...