tell total difficulty
tell total difficulty

ethermarket/pyethereum,karlfloersch/pyethereum,ethereum/pyethereum,pipermerriam/pyethereum,shahankhatch/pyethereum,karlfloersch/pyethereum,pipermerriam/pyethereum,ckeenan/pyethereum,jnnk/pyethereum,ddworken/pyethereum,inzem77/pyethereum,vaporry/pyethereum,shahankhatch/pyethereum,ethereum/pyethereum,harlantwood/pyethereum,holiman/pyethereum