using System;

public class Program

{   

    public static void Main()

    {

        var stakeholderIdentity = 14564056;

        var externalIdentity = (DateTime.UtcNow.Ticks + stakeholderIdentity).ToString();

        Console.WriteLine("Original String: " + externalIdentity);

        Console.WriteLine(externalIdentity.Length >= 10 ? externalIdentity.Substring(externalIdentity.Length-10, 10) : externalIdentity);

    }

}