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Sunday 29 December 2013

December 29th 2013 Weekly Pool and Network Statistics




Other weekly pool and network statistics posts


Welcome, miners.

Changelog:
  • Prettified the pie chart a bit more.
Usual pools missing from results:
  • 50BTC.com, Bitparking, Deepbit, GIVE-ME-COINS.com, Triplemining: No blocks solved this week.
Errors:
  • Nil.
Pools with coinbase signature:
Recent coinbase messages:

Pool hopping:
  • Nil.
1. The network's weekly average hashrate hits 10 Phps.
Well, somewhere between 9.4 and 10.5 Phps anyway. Although the block solve rate was reduced to 1185 blocks this week, I imagine that will pick up again after the Christmas / New Years holidays are over and deliveries continue as usual.


2. Discus Fish continues to grab more of the network
Discus Fish, a Chinese pool, has increased its share of the network continuously for the last six weeks, and has increased by more than 600% over the last nine weeks. Don't Chinese miners mine anywhere else? Or does the pool have something that others don't? If Discus Fish does have some quality that makes it attractive to miners and they start courting English speaking miners, GHash.IO could be in trouble. In any case, it's nice to see a small pool move up to the top 5 in such an explosive fashion.

Another nice thing that Discus Fish does is immortalise its miners - if you're lucky enough to solve a block for them, they add your name to their coinbase signature, for example in block height 277468:
"\003\xdc;\004七彩神仙鱼\xe2\xf7\a\032.N%\006\x96\xcf|o\x9b\xb65\031[-\xaa)\xe3\xc8&\xc7\xf7\xe7+\xf6\003\\\020\004X\xe7Ɩ\b\n|Mined by user yangzhiqing"


3. Pierce and Paul
Pierce and Paul are only known by their/its coinbase signature, for example this one from block height 276311:
"\003W7\004YQ\x84\x9a4]\xeeu\xfd'eN\xe3\xdd\xf6\t\xff\xbc\xf83"\025\016\xd0(N\xa4\xfb\xba%\x90G\004Й\xb3\005\001\xd5For Pierce and Paul"

I have been assuming it's a private hashing entity rather than a private pool since the hashrate has remained steady (and the proportion of the network slowly decreasing) since they started signing the coinbase. This week sees a very large increase in the hashrate for them, so either a bunch of new ASIC hashers have been purchased by them, or they've become a private pool.


4. Happy new year everyone!
That is all.


Organofcorti lives!

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, per 144 rounds for the network, and per hour for BTCGuild. 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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Find a typo or spelling error? Email me with the details at organofcorti@organofcorti.org and if you're the first to email me I'll pay you per ten errors:



Please refer to the most recent blog post for current rates or rule changes.

I'm terrible at proofreading, so some of these posts may be worth quite a bit to the keen reader.
Exceptions:
  • Errors in text repeated across multiple posts: I will only pay for the most recent errors rather every single occurrence.
  • Errors in chart texts: Since I can't fix the chart texts (since I don't keep the data that generated them) I can't pay for them. Still, they would be nice to know about!
I write in British (not US) English.


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