public static void Main()
string result = String.Empty;
DateTime timestamp = DateTime.Now;
string concatenation = String.Format("d10176e9-34f2-e811-a95f-000d3ab425a0XrZyma3tTo8y14I18ZCZxOAapOi0ZPM2LvrcxOFRjxc=201812051622");
System.Security.Cryptography.SHA1 sha1 = System.Security.Cryptography.SHA1.Create();
byte[] hash = sha1.ComputeHash(System.Text.Encoding.UTF8.GetBytes(concatenation));
result = BitConverter.ToString(hash).ToLower().Replace("-", "");
Console.WriteLine(result);