11th November weekly pool statistics

Welcome, miners. 

Ozcoin finds a very mysterious 500Ghps gradually over about 5 days this week. This means an in crease in average hashrate of about 250 Ghps, and an increase in percentage of network hashrate. Someone received an early ASIC shipment? /tinfoilhat

The obvious increase in pool hopping at Slush's pool maybe the reason for their increase in network hashrate this week.

Every thing I wrote about BitMinter last week still stands, except I think their luck and increase in hashrate maybe due to technomancy rather than human sacrifice. I'm not completely sure, though.

Apart from Ozcoin, BitMinter, and Slush's pool, all the other large pools lost a percentage of network hashrate. 

Bitlc.net, Triplemining, and Mkalinin are missing this week due to a mix of lack of block solves and an update to RCurl that seems to have messed up some of my scripts. Note to self: Test scripts after a major update in R.

Average hashrate:

Average hashrate = Total shares / Total round time

Weekly average round length as a fraction of difficulty:

Average number of shares submitted per round / difficulty

Figure 1: 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.

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.

Figure 3: Chart of chronology of pool hashrates, averaged per week.

Figure 4: Chart of average hashrates per pool per round for the week.
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 percentage of orphaned blocks produced by the pool, averaged per week.
Figure 8: 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 9: Chart of fulltime miner earnings loss at a proportional pool caused by pool hoppers, expressed as expected PPS earnings for fulltime miners. Currently only for Bitlc and Deepbit.

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