Quote from: Neisklar on December 14, 2013, 09:45:44 PM

Quote from: gnode on December 14, 2013, 09:44:03 PM

Quote from: Neisklar on December 14, 2013, 08:36:31 PM

Could someone please prove my following maths wrong:

hash_rate = (blocks_found/expected_blocks*difficulty * 2^24 / 30)

I looked at the block window from block 456520 onwards (approx 2013-12-14 20:10:18 GMT)
Lets look at a 5 minute window, which should get us 10 blocks.
Depending if we start this window at 20:10:00 or 20:10:18 we get 10 or 11 blocks "solved" in that time, so lets take the middle and take a factor of 1.05

So we have:

hash_rate = 1.05 * 6411.26760900 * 16777216 / 30
hash_rate =~ 3764712752 =~ 3,76 GH/s

So we have approximatly a network hashrate of 3,67 GHashes per second.

http://qrk.coinmine.pl/ showed at that time an approximate pool hashrate of 3,8 GH/s.

So either my maths are totaly wrong, the pools hahsrate display is totaly wrong, or houston, we have a very big problem...

pools hashrates are notorious for being wrong.

So what du you think the real hashrate of that pool is?
3 GHash, 2,5 GHash?

EDIT:

Just looked at the generation TX of last 100 Blocks:

From 86 of them the destination address was the same, which i assume is the pools address.
This means, although this is only a very rough estimations:

86% of the networks hashing power lies by this pool, and here we are: housten, we have a very big problem...

EDIT2:
Looking at the stats prooves this: http://www.coinmine.pl/qrk/index.php?page=statistics&action=blocks
Block Overview
   Gen Est.    Found    Valid    Orphan    Avg Diff    Shares Est.    Shares    Percentage    Amount    Rate Est.
All Time    308,642    176345    175056    1289    1,101.2280    48194144    67308505    139.66%    25459277.001874    57.14%
Last Hour    120    105    105    0    5,510.0801    144640    199012    137.59%    1680.0195    87.50%
Last 24 Hours    2880    2577    2576    1    5,958.9464    3837562    4721686    123.04%    41220.21616    89.48%
Last 7 Days    20160    17745    17743    2    4,733.0264    20994522    19637075    93.53%    283927.71958001    88.02%
Last 4 Weeks    80640    65543    65520    23    2,493.8772    40849708    44652365    109.31%    1643143.30782    81.28%
Last 12 Month    967680    176345    175056    1289    1,101.2280    48194144    67308505    139.66%    25459277.001874    18.22%

EDIT3:
And just to be clear:

i personally have no reason to distrust the pool operator, but thats a thing that needs to be fixed ASAP or bter38 will never come, and maybe otehr trading platforms will suspend Quark wich would definatly be a pity.

talk to Feeleep he is a member here and runs the pools.