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Author Topic: [1050 TH] BitMinter.com [1% PPLNS,Pays TxFees +MergedMining,Stratum,GBT,vardiff]  (Read 836033 times)
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May 05, 2013, 01:52:38 AM
 #2881

Sorry, there was a few minutes downtime as the server was overloaded. Running OK again now.

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The network tries to produce one block per 10 minutes. It does this by automatically adjusting how difficult it is to produce blocks.
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May 05, 2013, 02:08:47 AM
 #2882

Waiting on that run of good luck...I mean the other guy did the math. How many days will it take to get 16 blocks (average) in a day???
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May 05, 2013, 05:29:25 AM
 #2883

The miner collects coins for shares submitted to the pool.  And chooses not to submit winning block solutions.  It would be done only out of pure malice.  But there is plenty of malice around here lately.  Any pool operator that isn't considering worst case scenarios is going to get run over by some bad actors.

On the long run, if the attacker submits enough 'rotten' shares (i.e. discarding winning ones), wouldn't it easily be detected by the lower than expected (i.e. zero, if the attacker discards all winning shares) found blocks / submitted proofs of work?
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May 05, 2013, 05:39:23 AM
 #2884

2 Stale blocks in a row!?!  Huh Shocked

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matt4054
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May 05, 2013, 05:45:03 AM
 #2885

2 Stale blocks in a row!?!  Huh Shocked

I thought so, but nope, we took over BTCGuild on 234580 thanks to 234581 right behind, and theirs was orphaned.
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May 05, 2013, 06:15:46 AM
 #2886

Now with 8+ TH/s we should on avg be finding 16 blocks/day at current difficulty 10076293.

So far today (past 15 hrs) found 4.
Yesterday (during full 24 hr period) found 7.
I think you need to give things more time.

Somebody correct me if I'm wrong, ASICMINER started mining on Bitminter from around shift 14893 2013-05-04 08:24 UTC (an educated guesstimate).

Now, 22 hours later, at ~ 6:15 UTC we have mined 15 blocks. Looks like we are right on track.

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May 05, 2013, 07:04:02 AM
 #2887

Now with 8+ TH/s we should on avg be finding 16 blocks/day at current difficulty 10076293.

So far today (past 15 hrs) found 4.
Yesterday (during full 24 hr period) found 7.
I think you need to give things more time.

Somebody correct me if I'm wrong, ASICMINER started mining on Bitminter from around shift 14893 2013-05-04 08:24 UTC (an educated guesstimate).

Now, 22 hours later, at ~ 6:15 UTC we have mined 15 blocks. Looks like we are right on track.
Either way, it's a statistical expected average.
Give it a week or two and you still can't guarantee it to be very near the average ...

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May 05, 2013, 08:56:07 AM
 #2888

Now with 8+ TH/s we should on avg be finding 16 blocks/day at current difficulty 10076293.

So far today (past 15 hrs) found 4.
Yesterday (during full 24 hr period) found 7.
I think you need to give things more time.

Somebody correct me if I'm wrong, ASICMINER started mining on Bitminter from around shift 14893 2013-05-04 08:24 UTC (an educated guesstimate).

Now, 22 hours later, at ~ 6:15 UTC we have mined 15 blocks. Looks like we are right on track.
Either way, it's a statistical expected average.
Give it a week or two and you still can't guarantee it to be very near the average ...

Yup, my point was that you can't expect 24 hrs based "results" after just a few hours of higher hashrate.

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May 05, 2013, 04:44:30 PM
Last edit: May 05, 2013, 09:36:07 PM by philipma1957
 #2889

All the data is available but it would take a few days work.  I did  this back in the fall and bitminter was fine for a 90 day period of time.  I will tell you what i will go back and do it again. I will go back to aug 2012.

Below is from aug 1 2012.  I used this calculator https://bitclockers.com/calc   to get the normal number.

keep in mind 50 coins a block if you try to double-check my work  until late nov.

hash power is the hash for each block made added and divided by the blocks made .  so it is a good but not perfect number.  I am up to aug 10th 2012 we made 61 blocks and normal would be 53.16


  61 blocks made vs 53.16  is huge .  1.147 to 1   or 14.7 percent over normal then toss in the namecoins.  you also need to understand that determining the true daily hash rate  is not possible I don't have enough samples of hash rate my samples are when a block is found.


DATE------------------Blocks----------------Difficulty--------------Hashpower-------------- normal blocks for this

 Aug  1 2012------------7-------------- 2,036,671------------------470.85Gh/s--------------------- 4.64
 Aug  2 2012------------3---------------2,036,671------------------534.00Gh/s----------------------5.26
 Aug  3 2012------------5---------------2,036,671------------------531.99Gh/s----------------------5.25
 Aug  4 2012------------6---------------2,036,671------------------513.04Gh/s----------------------5.07
 Aug  5 2012------------4---------------2,036,671------------------518.61Gh/s----------------------5.11
 Aug  6 2012------------3---------------2,036,671------------------552.93Gh/s----------------------5.46
 Aug  7 2012------------5---------------2,036,671------------------536.80Gh/s----------------------5.30
 Aug  8 2012------------8---------------2,036,671------------------540.74Gh/s----------------------5.34
 Aug  9 2012------------9---------------2,036,671------------------557.76Gh/s----------------------5.51  
 Aug 10 2012-----------11--------------2,036,671------------------633.70Gh/s----------------------6.26



This method has a flaw  the hash rate of bitminter is found by using the hashpower when a block was made.  so if it was a bad day and 3 blocks were made only 3 samples of hash rate were used to find  the daily hashrate.  So the hash rate could be higher and the luck is worse but more likely the average hash rate is lower .  reason is if bitminter goes down and hash rate is 0  for 1 hour no block will be made.  So my hash rate average is missing all down time.   BTW I believe that is true when you look at bitminter's luck charts.  In order to be really accurate 4 samples of hashrate every hour would be far better to know the true daily hashrate. A total of 96 samples a day.

    I think the doctors luck chart is wrong  and always reads low for the same reason. He uses the current hashrate when the block is found. Thus the luck is calculated with all down time missing.  So in a 24 hour day if the system is down 1 hour  luck will be based on 24 hours up time.  The only way to really figure out luck is for some one to write a script that gives us 4 samples(even 10 per hour)  of bitminter every hour of every day for the next month. I would be certain that the average hashrate with those numbers will be 3 to 5% less then the hash rate used by counting it only when a block is minted.

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May 05, 2013, 06:32:53 PM
 #2890

Did even more downtime just happen?  Pool down to 1 TH/s Huh

(BFL)^2 < 0
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May 05, 2013, 06:44:19 PM
 #2891

I logged in to see my hashrate at 0 and cgminer was getting authentication errors. I deleted my workers and re-created them and now things are working for me.
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May 05, 2013, 06:53:54 PM
 #2892

Sorry, a new version of the mining server was not playing nice with all miner versions in use. I quickly reverted back to the old one.

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May 06, 2013, 12:35:29 AM
 #2893

Half hour downtime...

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May 06, 2013, 01:37:55 AM
 #2894

Half hour downtime...
  yeah and this down time does not get shown correctly for luck.  for instance today we mined 20 blocks which is a great day.    so if you add the hash rates at the 20 blocks which is 20 samples of hash rate for a 24 hour day then divide by 20 you get  an average hash of 8,739.616 Gh/s     even with 20 samples from today that number is high since we had a half hour down time.      remember if the server is down or ddos attack we can not earn a block so the zero samples do not get averaged in.   so if we were down for .5 hours  23.5/24 = 96.04 percent  the hash rate would need to be multiplied by that so   we were more like 8,393.527   not 8,739.616   

so  we mined 20    if you use the calculator

https://bitclockers.com/calc   it shows we should have mined 17.448 blocks   but that has not been lowered b down time today the correct number of should mined was 16.757 blocks  and we did 20.    so if you defied 16.757 into 20 you get 1.193 or 19.3 percent better then normal.   some will insist pools should have 0 done time and have  20 divided by the un adjusted 17.448 blocks.    this comes to 1.146 or 14.6 percent better then normal.

 either way it was a good day.   do not forget we also got nmc 8 percent extra is normal so today was close to a 1.27 or 1.28 rather then 1 or 28% extra.   

I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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May 06, 2013, 02:04:51 AM
Last edit: May 06, 2013, 02:39:29 AM by Jcw188
 #2895

Absolutely a great day. But luck has been down for more than one day.
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May 06, 2013, 02:37:16 AM
 #2896

Would love to see a gh/s breakdown by worker on the stats page

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May 06, 2013, 04:07:38 AM
 #2897

Another explanation is that some party is conducting a block withholding attack on the pool.  That is:

They direct hashpower at the pool but modify their mining software to not submit shares with a target value greater than X where X is less than the current difficulty.

The result is that they collect coins without every contributing to the pool. 

Such a strategy would be a very viable attack on competing pools.

I can think of several easy mechanisms to address such an attack, but I doubt that any pools do so today.

This is patently false. Please think about what you are saying before you start typing such things.

There is no way to perform a MITM attack or block withholding attack where the miner withholding receives the coins instead of the pool.

He never said that.  On a PPS pool they can do that and still collect the PPS.  On a non PPS pool they also can do it, but they do not collect.  It still is an attack, it is just costly. 

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May 06, 2013, 07:30:41 AM
Last edit: May 06, 2013, 08:02:42 AM by organofcorti
 #2898

Would love to see a gh/s breakdown by worker on the stats page

Your wish is my etc.

from http://organofcorti.blogspot.com.au/2013/05/122-pool-and-network-miner-hashrate_3.html





or you could just use the api:

/api/pool/top50

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May 06, 2013, 01:34:29 PM
 #2899

Half hour downtime...
 yeah and this down time does not get shown correctly for luck.  for instance today we mined 20 blocks which is a great day.    so if you add the hash rates at the 20 blocks which is 20 samples of hash rate for a 24 hour day then divide by 20 you get  an average hash of 8,739.616 Gh/s     even with 20 samples from today that number is high since we had a half hour down time.      remember if the server is down or ddos attack we can not earn a block so the zero samples do not get averaged in.   so if we were down for .5 hours  23.5/24 = 96.04 percent  the hash rate would need to be multiplied by that so   we were more like 8,393.527   not 8,739.616  

so  we mined 20    if you use the calculator

https://bitclockers.com/calc   it shows we should have mined 17.448 blocks   but that has not been lowered b down time today the correct number of should mined was 16.757 blocks  and we did 20.    so if you defied 16.757 into 20 you get 1.193 or 19.3 percent better then normal.   some will insist pools should have 0 done time and have  20 divided by the un adjusted 17.448 blocks.    this comes to 1.146 or 14.6 percent better then normal.

 either way it was a good day.   do not forget we also got nmc 8 percent extra is normal so today was close to a 1.27 or 1.28 rather then 1 or 28% extra.    

It's possible you are correct.  Bitminter should show daily earnings like other pools do.  This gives you a clear indicator that can be compared with expected earnings for your hashrate and the day's luck.

But Bitminter isn't down 10% of the time, so there has to be more to it if there is soley a miscalculation going on.  And any pool that is down 10% is one to avoid, failover to backup pools costs significant transition time.


I have an idea that should be easy to do. I will get back with results in 5 days.

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May 06, 2013, 02:13:08 PM
 #2900


But Bitminter isn't down 10% of the time, so there has to be more to it if there is soley a miscalculation going on.  And any pool that is down 10% is one to avoid, failover to backup pools costs significant transition time.

Can you show me your calculations for the 10% figure?

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