11th August 2013 weekly pool and network statistics
Gigavps' Semi-private pool added (thanks for the help, gigavps)
Usual pools missing from results:
Maxbtc - planned closure.
Coinotron - planned closure.
Bitcoinpool - Website down and as far as I know no blocks solved since May. I'm assuming they are closed.
Blockexplorer.com hasn't updated since block height 250458. Since I use Blockexplorer.com for the network's hashrate every 144 blocks, that statistic is incomplete this week. The weekly average hashrate, blocks solved and so on I calculate using my own data so that is unaffected.
Pools with coinbase signature:
ASICMiner: "Mined By ASICMiner"
50BTC.com: "Hi from 50BTC.com
BTCGuild : "Mined by BTC Guild", "BTC Guild DE", "BTC Guild 2", "BTC Guild 2"
Discus Fish: "七彩神仙鱼" and "Made in China"
Satoshi Sysems: "Satoshi Systems"
Slush's pool: "slush"
ST Mining Corp: "st mining corp"
There's a new coinbase signature I noticed: "bghash.io". Does anyone know if this is a pool's name or just the name of the pool's software? The following blocks were solved by this entity:
250205 250226 250329 250354 250393 250433 250486
and the generated coin was paid to this address:
which has been actively solving blocks since the 6th July.
1. Unknown hashing sources at 1.9% of network
Blocks solved by unknown sources are now down to 1.9% - that's only 25 blocks out of a total of 1323 for this week. That total is 31.25% more than it should be, so I don't see the skyrocketing network hashrate start slowing down anytime soon - especially with all the new sources of hashes recently available.
2. Gigavps' Semi-private pool
I added Gigavps' Semi-private pool this week, starting on the charts with a massive 7% of the network. Interestingly, Figure 8 shows the pool has a much higher minimum hashrate than for other pools. Specifically, the minimum hashrate is ~7Ghps, and the top four user accounts have between 1.2 and 7.8 Thps. This is an all-ASIC pool (or at least very close to it). I think most pools hashrate distributions will look similar to that in the future.
3. Lest we forget
Also this week we say farewell to Coinotron's BTC pool and MaxBTC, both in a planned closure. Coinotron seems to want to focus on alt-coins, and MaxBTC's pool op will concentrate on Kraken.com, a very nice trading platform - give it a try, if you trade. ABCPool.com has also closed but being a proxy pool they were not included in the weekly statistics.
Bitcoinpool.com is still offline with a 404 error from an nginx server somewhere. They haven't solved a block since May, so I think they won't be back.
In honour of the pools that have gone to the God of the Blocks' happy hashing grounds, I've produced a chart of the percentage of hashrates of all the dead pools for which I have records, in order of the last week in which they solved a block.
I'll update the chart when the next sad occasion arises - which I think will be when BTCDig.com arises phoenix-like from the ashes of btcmine.com, or perhaps it will be Bitclockers.com, which have had payment and website issues recently and today were down to a total pool hashrate of 1 Ghps.
So, with sadness and nostalgia I present the Dead Pools.
Please take some time to think about the pool operators who ran these pools, loved them as if they were their own children, and did their part to help secure the network. Also, don't forget about the many other pools that didn't make it - Arsbitcoin and Continuum pool (the first pool to use the Geometric method of reward distribution, the progenitor of DGM) come to mind, but there have been many others, especially those that were unable to change from a proportional reward method.
You can view this weeks charts at http://organofcorti.blogspot.com/2013/08/august-11th-2013-weekly-pool-and.html
You can view all previous charts and other posts and fun things at http://organofcorti.blogspot.com
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