code: def get_block_statuses(self, block_ids):
          
          try:
              return [
                  (block_id.hex(),
                   self._chain_controller.block_validation_result(
                       block_id.hex()))
                  for block_id in block_ids
              ]
          except KeyError as key_error:
              raise UnknownBlock(key_error.args[0])
docs: Returns a list of tuples of (block id, BlockStatus) pairs.