26th August weekly pool statistics

Once again Bitcoinpool's website was down, although it had been up for a few days during the week. This can't be a good sign for Bitcoinpool or Bitcoinpool's miners.

I have added 50BTC.com. The average hashrate attributed to this pool cannot be exact (as discussed previously). I have decided that the small error that could result from the estimation of hashrate from blocks produced will, in the long run, be negligible.

If your pool isn't here and you'd like it to be, comment with  a link to a block history with round lengths and either solve times to the nearest second or a timestamp.

Average hashrate:

Average hashrate = Total shares / Total round time

Luck index:

log(% of network blocks solved / % of network hashrate)

Luck index = 0 is average luck

Luck index > 0 is good luck

Luck index < 0 is poor luck

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 pool luck indexes, averaged per 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).

Highlights:

• Pool added: Bitparking merged mining pool.
• EclipseMC was the only pool to see a significant increase in hashrate this week. Congratulations, Inaba!
• p2Pool is now up to 8 weeks in a row during which the averaged luck for the week has been average or better than average.
• Including 50BTC.com brings the top three pools' combined hashrates much closer to 50% of the network hashrate.
• No slowdown of pool hopping. I hope by next week to add a table with an estimation of how much fulltime miners lose to pool hoppers (details on how to calculate this are in NPW 6.2: Bitlc) 

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