code: def get_block_header(self, block_hash, id=None, endpoint=None):
          
          return self._call_endpoint(GET_BLOCK_HEADER, params=[block_hash, 1], id=id, endpoint=endpoint)
docs: Get the corresponding block header information according to the specified script hash.
          Args:
              block_hash: (str) the block scripthash (e.g. 'a5508c9b6ed0fc09a531a62bc0b3efcb6b8a9250abaf72ab8e9591294c1f6957')
              id: (int, optional) id to use for response tracking
              endpoint: (RPCEndpoint, optional) endpoint to specify to use
  
          Returns:
              json object of the result or the error encountered in the RPC call