24% rejected work is very very high. Is there a problem with your internet connection?

There was a problem with the live hashrates on the websites not working today. I will have a fix for this shortly so it won't happen again so easily. It has happened a few times over the last months. Apologies for the inconvenience, I know broken stats can be confusing.

There was a problem with the live hashrates on the websites not working today. I will have a fix for this shortly so it won't happen again so easily. It has happened a few times over the last months. Apologies for the inconvenience, I know broken stats can be confusing.

80-100 MH/s is around the hashrate that the server doesn't reliably estimate. When you are mining that slow, the server sometimes thinks you stopped mining and shows zero hashrate.

Many in the pool are using the stratum mining proxy. I guess it is most likely a problem with the options you are using. Try what Turbor said. If it fails, how does it fail? Do you see any errors? The most common problem when users have been unable to get the proxy working has been wrong user name, worker name or password.

The BitMinter client doesn't support the ZTEX FPGAs. Are they all running slowly all the time? Or is one not working? Or perhaps the hashrate of all of them is fluctuating up and down?

Yes, in the PPLNS case it would be 0.5%

From what I understand some ASIC buyers are moving to PPS as security against the difficulty going up so fast, which could be said to increase variance or make the variance last considerably longer. I'm just saying that while it does protect you against bad mining luck, it has a considerable price tag.

I could make the same comparison between PPS and PPLNS mining at BTC Guild: 12% vs 3%.

If someone is looking to be safe from variance by using PPS on BTC Guild that's 7.5% fee + 1.5% transaction fee income lost + 3% namecoin income lost = 12% versus the 2.5% on BitMinter (including donation for paid orphans).

I'm not saying charging so much is wrong. PPS is very dangerous for a pool. 12% is just what you have to pay for insurance against variance.

Is Deepbit still 10% fee on PPS? That's not better, because you have to remember the transaction fees and namecoins. The total then is 14.5% which is considerably more than BTC Guild.

And BitMinter appears as they try out mining.

http://www.youtube.com/watch?v=LC3ZHRF_8kQ&t=19m13s

Unfortunately not with very good hardware. But I guess that's the point they are making anyway, you need ASIC.

BitMinter in the news: http://www.youtube.com/watch?v=LC3ZHRF_8kQ&t=19m13s

They should have talked to BFL about borrowing a Jalapeno though, instead of CPU + Intel HD 4000 mining.

Upgrading the server now - may cause a minute or two of downtime.

Ready for testing idle worker notifications. If you'd like to take part leave a message using the "contact" page on the website while you are logged in. I'll need to know each worker name and which hashrate threshold in MH/s you would like to use. You'll get an email if the worker drops below the selected threshold hashrate. As you have seen the server cannot accurately estimate your hashrate, so try a hashrate 25% or so below your normal hashrate.

After a few days of testing I should have something on the website to use for selecting the idle threashold and activating/deactivating idle worker notifications.

Add noreply@bitminter.com to your address book and/or antispam whitelist to ensure you can receive the mails.

I'm doing a little testing of idle worker notifications and a fix to get mining difficulty up faster with fast ASICs like 500 GH/s rigs. There will be a server restart for the changes to go live, hopefully within a few hours.

Don't advertise other pools here please. There's plenty of room in the pools section for pools to advertise themselves in their own threads. This thread is about BitMinter.

Which operating system are you on? Does it show up as a serial port? You installed the driver?

What happens if you go "devices" -> "scan all ports" in the menu? Any messages in the log at the bottom of the window?


You can turn off individual sounds. Try turning off the proof of work accepted and proof of work rejected sounds.

You can't pool hop away from bad luck in a pool that isn't vulnerable to hopping. The bad luck already happened, it's too late to hop.

In a pool with a proportional reward system you can, but not here.

Guys, take it easy.

We have to expect that miner client bugs will happen. That's why I always post a link to the previous version when I post about a new version of my client.

If you upgrade and something is broken, downgrade again and report the bug.

Thanks for the quick fix, ckolivas.

What the norm will be for round lengths will depend on our share of the global hashrate. As the global hashrate goes up our pool hashrate has to grow at the same rate for our average round lengths to stay the same.

When this pool was young and only had a few miners a round could take 7 days sometimes, which meant you only got a single payout that week. At the time we had a very small share of the global hashrate.

No, not at all. I'm just trying to answer all the questions that pop up when we have bad luck. As usual I also have a couple of users sending support requests calling me a thief because today's payout was lower than usual. I try to explain how the reward system works, but not everyone want to listen..

Last time we hit some bad luck I paid organofcorti to look into it, as some users believed it was statistically improbable. He's very good with statistics and probability and did a very thorough analysis which you can read here:

http://organofcorti.blogspot.com/2013/05/131-bitminter-and-luck.html

If you really want to look into the bad luck we had just now, please do what he did, don't just look at 3 unlucky blocks and jump to conclusions.

Also note how we paid better than most pools even when we had a long period of bad luck. Low fee, transaction fee income and namecoins make a big difference.

Reject ratio seems ok. Miscalculations are a bit high, but normal for some ASIC products. If this is on GPU you are probably overclocking too much.

What's your reject to total work ratio? I would consider up to 0.5% to be normal.

Much of your 2 days of mining have not been paid yet. There's a delay from you do some work until it is fully paid (10 shifts). The payments are also influenced by luck and we had some bad luck just now.

Here is some information about how the reward system works:

The approximate mint speed shown in BitMinter client is just that, an approximation. Bitcoin mining is like a lottery. How often we find a block, and earn bitcoins from that block, is random. Each hash you process is like a lottery ticket. Each hash has a (very low) chance of producing a block. You get paid with coins from a block whenever a block is found by someone mining in the pool. Your share of the income from a block is determined by the amount of work that you did in the most recent 10 shifts at the time the block is found.

Because of this, your daily income will vary with luck. That's often referred to as variance. There may also be some hours between two payouts if we are having bad luck and no blocks are found for a while.

In addition to that there is a delay from the time you do some work until that work is fully paid. The work you do is registered in a shift, and then that work is credited with income from new blocks we find until its shift is no longer among the 10 latest shifts. This takes a few hours. If you turn off the prepay perk then there is an additional delay having to wait for blocks to confirm, which takes about 20 hours.

So, assuming you have prepay on, if you do 24 hours of work and then look at the results, then only some of that work has been fully paid. The remaining work is still receiving pay, even if you stop mining. Needless to say that is not going to look very profitable, when you are looking at all the work you did but only part of the pay you are going to receive.

Comparing pools by how much you get paid for 24 hours of mining is pointless. The comparison becomes "which pool has the best luck today?" You can't use that data for anything. The luck a pool has today has no influence on its luck tomorrow. Believing that it does is called "gambler's fallacy" which you can ready about on wikipedia:

  http://en.wikipedia.org/wiki/Gambler%27s_fallacy

If you want to know how BitMinter's payouts have been over time you can read Organofcorti's very detailed analysis here:

  http://organofcorti.blogspot.com/2013/05/131-bitminter-and-luck.html