Neighbourhood Pool Watch: 20th October weekly pool statistics

This week Deepbit continues a consistent slide in hashrate that has occurred since the start of the chart. BTCGuild continues a steady increase in hashrate, and may well be in second place next week. Ah, BTCGuild - as wknight wrote, always the bridesmaid, never the bride.

Also, thanks to eleuthria, the BTCGuild pool op, for providing me an API for BTCGuild's statistics. Starting next week they'll be much more accurate, and I've deleted the last three weeks of (shares per round) / Difficulty which were inaccurate.

Finally, I've removed the "luck plots' since they were unnecessary, and added a "loss to pool hoppers" plot. This last plot shows the equivalent PPS a miner can expect at either DeepBit or Bitlc, ignoring any pool fees. this week, for example, fulltime DeepBit prop miners can expect to earn 0.99 x PPS before fees, and at Bitlc 0.68*PPS.

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).

NEW: 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.