code: def DeregisterBlockchain():
          
          Blockchain.SECONDS_PER_BLOCK = 15
          Blockchain.DECREMENT_INTERVAL = 2000000
          Blockchain.GENERATION_AMOUNT = [8, 7, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
          Blockchain._blockchain = None
          Blockchain._validators = []
          Blockchain._genesis_block = None
          Blockchain._instance = None
          Blockchain._blockrequests = set()
          Blockchain._paused = False
          Blockchain.BlockSearchTries = 0
          Blockchain.CACHELIM = 4000
          Blockchain.CMISSLIM = 5
          Blockchain.LOOPTIME = .1
          Blockchain.PersistCompleted = Events()
          Blockchain.Notify = Events()
          Blockchain._instance = None
docs: Remove the default blockchain instance.