Bitcoin Mining Distribution Block: 204215 21 Oct 2012 Hashrate (in Difficulty units per second; 1 Difficulty unit == 4 GiHash): Total Chain 100.00% 5,637 Unknown 67.92% 3,829 BTC Guild 12.58% 709 BitMinter 10.06% 567 SlushPool 7.55% 425 CoinLab 1.26% 70 OzCoin 0.63% 35