Quote from: chevalier2000 on November 20, 2015, 06:08:07 PM

Quote from: marko11 on November 19, 2015, 09:17:28 PM

so if I look one year back dificulty increase by arround 60% ... ? so if same thing happens till next year my daily earnings will drop from 20$ to 8$ if btc price not change ... can I calculate something like that ? will be this calculation close ?

This calculation is wrong. If difficulty increase by 120%, miner still mine some coin, but you have fixed fee of 15Th x 1.2$=18$.
So if the 15Th earn less than 18$ per day for 20 consecutive days the contracts will terminate.

15Th earn 0.1146 btc, with 60% diff increase will earn 0.071625 btc (for 30% increase divide the btc by 1.3, for 120% increase divide the btc by 2.2),
if BTC will be at 240$ in 6 month -> 17.19$, so minus fee of 18$... no profit ! (contract will terminate)
if BTC will be at 300$ in 6 month -> 21.49$, so minus fee of 18$=3.49$
if BTC will be at 500$ in 6 month ->35.81$, minus fee = 17.81$

For this kind of contract the BTC price if very important (because of the fixed fee). Sorry for my bad english.

hi chavelier

I think that I alredy deduct fee on my first calculation.. look :
I buy 15 000 GH/s for 5 850$

daily profit with today btc price is 37.69 $ - GM fee 0.0012$ per GH/s 15 000*0.0012 = 18$ fee ... so daily profit is 37.69 - 18 = 19,69$