after fork change algo yesterday why diff aka nethash still so high where is the source come from ? i see global nethash about 16Mhs and then every pool not more than 1Mhs who is the robber ?
http://i66.tinypic.com/2uft7dh.jpgDifficulty window it 720 blocks. We will see real nethash after block 170721
difficulty window is 60 blocks, and we use a weighted harmonic mean to calculate difficulty (newest block times have higher weight than older ones).