using System;
using System.Security.Cryptography;
 
public class Test
{
	public static void Main()
	{
 
		    String publicKeyBase64 = "MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEtNSk8o3dmCMY9CPj4f5ZeQkwBk91qZNJqe6/qc72KuX3hcUMxOn63czNmeljiDQKgkc6C4lNGJ0H+1MScSRtzg==";
 
            byte[] publicKey = Convert.FromBase64String(publicKeyBase64);
            SHA256 sha256 = SHA256Managed.Create();
            byte[] hash = sha256.ComputeHash(publicKey);
            String publicKeyHash = Convert.ToBase64String(hash);
 
            Console.WriteLine("Result: {0}", publicKeyHash);
	}
}

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