code: def getBlockParams(ws):
      
      dynBCParams = ws.get_dynamic_global_properties()
      ref_block_num = dynBCParams["head_block_number"] & 0xFFFF
      ref_block_prefix = struct.unpack_from(
          "<I", unhexlify(dynBCParams["head_block_id"]), 4
      )[0]
      return ref_block_num, ref_block_prefix
docs: Auxiliary method to obtain ``ref_block_num`` and
          ``ref_block_prefix``. Requires a websocket connection to a
          witness node!