using System;

using System.IdentityModel.Tokens.Jwt;

public class Program

{

    public static void Main()

    {

        DateTime a = default;

        DateTime b = DateTime.MinValue;

        Console.WriteLine(Guid.NewGuid());

        Console.WriteLine(DateTime.UtcNow);

        Console.WriteLine(a);

        Console.WriteLine(b);

        var c = new JwtSecurityToken("eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMTY1MjQ3MCIsImp0aSI6ImU5NDYwMzBiLTU5M2UtNGIyMy1hZjMyLWM4NTA2ZTMxZDE0YyIsInVuaXF1ZV9uYW1lIjoiMTE2NTI0NzAiLCJuYmYiOjE2NTAzNjU0MDAsImV4cCI6MTY1MDM2NTQ2MCwiaXNzIjoiaHR0cHM6Ly93d3cucm9zc21hbm4ucGwvIiwiYXVkIjoiaHR0cHM6Ly93d3cucm9zc21hbm4ucGwvIn0.DfFu6I7qLTRup_h4jzWDKFRif6BCbr6wb47oAaS-TDU");

    Console.WriteLine(c);

    Console.WriteLine(c.ValidTo);

}

}