Neighbourhood Pool Watch: 28th October weekly pool statistics

This week, the top pool hashrates are fairly stable, and BTCGuild's lead over DeepBit looks persistent. Ozcoin finally increases its percentage of the network hashrate - something I've been expecting to see for many weeks.

If BitMinter's hashrate continues to increase at the current rate it will be in the top tier in about a month, and if you look at Chart 5 you'll see that BitMinter has had significantly lower negative binomial CDF than than any other pool. Perhaps lucky pools attract miners?

Bitlc is not included since it didn't solve any blocks in the last 7 days.

I noticed a very large influx of Russian / Ukrainian IPs in the last 24 hours - welcome! Please post questions if you need anything explained - I'm not sure how well Google Translate works with technical language.

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.