code: def nethash interval = 500, start = 0, stop = false
        suffixe = stop ? "/#{stop}" : ''
        JSON.parse(call_blockchain_api("nethash/#{interval}/#{start}#{suffixe}?format=json"))
      end
docs: shows statistics about difficulty and network power
  
   /nethash/INTERVAL/START/STOP
   Default INTERVAL=500, START=0, STOP=infinity.
  
   See http://dogechain.info/chain/Dogecoin/q/nethash