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Tuesday 8 October 2013

October 6th 2013 weekly pool and network statistics


Welcome, miners.

Changelog:
  • Added Megabigpower to the weekly stats.
Usual pools missing from results:
  • Nil
Errors:
  • Nil
Pools with coinbase signature:


Recent coinbase messages:

Pool hopping:
  • Nil.

1. Organofcorti lives!
After last week's post, Inaba ( pool op for EclipseMC ) asked me if I'd noticed anything odd in the coinbase (other than the preponderance of Pierces and Pauls). I had a bunch of family stuff this week - which is why this post is so late - and didn't get time to do a search until today.

At first I didn't find any strange messages. I admit I was looking for something along the lines of a secret FBI message or something. Then I widened my search from unsigned blocks with messages to signed blocks with messages - and lo! Thanks to Inaba I finally achieved bitcoin fame, in blocks 259575, 259622, 259625. Although I thought pool operators would be too serious to have a sense of humour about the coinbase (which is why I never check there for messages), perhaps I should have guessed it of Inaba - after EMC has identified its blocks using messages such as "Aluminum Falcons" (starting block 166138 ) and "Roll 1D10 For Save"  (starting block 140698 - oh, wait no that's Eligius' "O my Jesus, forgive us our sins, save us from the fires of Hell, ..." , here's the right "save": 193680 )

Those of you that know me know I'm heavily tattooed. Any suggestions for a font for these three blocks? I was thinking 14th Century germanic, but I'm open to ideas.

Thanks Inaba! My blocks will far outlast me I suspect, and I'll be in good company. As long as there is bitcoin, the legend of organofcorti will live on. I'm accepting movie options.


2. Pierce and Paul fans solve 79 blocks so far.
I think they're making a business of it. Anyone care to see if 13NA7X1u18CgGa7RzTDyvuuoLJtLRvXgke  has been used previously?


3. Megabigpower start signing the coinbase.
This week Megabigpower started to sign the coinbase. They're building a 100 Th farm to be run in a similar way to ASICMiner. They only started to sign in the last few days of the week, so I suspect their hashrate will be much higher next week since a full week's worth of blocks will be signed.

As usual, please post comments if there's anything you don't understand, with which you disagree, or just think is wrong.

The charts

Table: Table of all pools with public data and their various statistics averaged for the last seven days - for smaller pools the average may be more or less than seven days, depending on number of blocks solved for the week. Network hashrate and that of some pools are estimates, the upper and lower 95% confidence interval bounds are included.
Figure 1: Pie chart of the percentage of network blocks hashrate by pool. "Unknown" combines those pools for which I can't scrape statistics, solominers and private pools. The percentage of network hashrate will only be approximate since the exact network hashrate is unknown.
Figure 2: Chart of network hashrate, hashrate of the largest mining pool, combined hashrates of the three largest mining pools, and a line representing 50% of the network hashrate. Handy if you're worried about 51% attacks. The upper and lower 95% confidence interval bounds for the network hashrate are in between the shaded areas.
Figure 3: Chart of chronology of pool hashrates, averaged per week.
Figure 4: Chart of average hashrates per pool per round for the week, and per 144 rounds for the network. The upper and lower 95% confidence interval bounds for the network hashrate are in between the shaded areas.
Figure 5: Chart of chronology of negative binomial CDF probability of shares submitted and blocks produced for the week.
Figure 6: Chart of chronology of round length divided by difficulty, averaged per week.
Figure 7: Chart of hashrate vs round length for hoppable pools (the larger the hashrate increase at the start of a round, the larger the loss to strategic miners).
Figure 8: Chart of pool user hashrate distribution. Note that for some pools this average is over twenty four hours, some pools are averaged over an hour or more and some for only fifteen minutes, so expect some variance in the results.















Thanks to blockexplorer.com for use of their network statistics.

organofcorti.blogspot.com is a reader supported blog:

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