code: public static long extractTimestampTiny(long idTiny) {
          final long blockSize = 10000L;
          final long threshold = 0x800000000L;
          long timestamp = idTiny > threshold ? idTiny >>> SHIFT_TIMESTAMP_TINY : idTiny;
          return timestamp * blockSize + TIMESTAMP_EPOCH;
      }
docs: Extracts the (UNIX) timestamp from a tiny id.
  
  @param idTiny
  @return the UNIX timestamp (milliseconds)