def __init__(self, numberBlock, data, previousHash, idHash):
    self._idBlock = numberBlock
    self._data = data
    self._previousHash = previousHash
    self._idHash = idHash
    self._checker = True
def __init__(self, numberBlock, data, previousHash, idHash):
    self._idBlock = numberBlock
    self._data = data
    self._previousHash = previousHash
    self._idHash = idHash
    self._checker = True