def __init__(self):
Block.__init__(self,0,[],0,'0')
self.unconfirmed_transactions = []
self.chain = []
def __init__(self):
Block.__init__(self, 0, [], 0, '0')
def __init__(self):
Block.__init__(self,0,[],0,'0')
self.unconfirmed_transactions = []
self.chain = []
def __init__(self):
Block.__init__(self, 0, [], 0, '0')