Bitcoin Mining Distribution Block: 355436 08 May 2015 Hashrate (in Difficulty units per second; 1 Difficulty unit == 4 GiHash): Total Chain 100.00% 77,435,899 F2Pool 21.28% 16,475,723 AntPool 15.60% 12,082,197 BWPool 9.93% 7,688,670 BitFury 7.09% 5,491,907 KnCMiner 6.38% 4,942,716 BTC Guild 5.67% 4,393,526 GHash.IO 5.67% 4,393,526 SlushPool 5.67% 4,393,526 BTCC 3.55% 2,745,953 Unknown 3.55% 2,745,953 BTC Nuggets 2.84% 2,196,763 Eligius 2.84% 2,196,763 digitalX Mintsy 2.84% 2,196,763 21 Inc. 2.13% 1,647,572 Bitcoin Affiliate Network 1.42% 1,098,381 Telco 214 1.42% 1,098,381 BitMinter 0.71% 549,190 KanoPool 0.71% 549,190 Polmine 0.71% 549,190