Virtual to abstract

diff --git a/Novacoin/Hash.cs b/Novacoin/Hash.cs
index 34632f1..14c19d9 100644 (file)
--- a/Novacoin/Hash.cs
+++ b/Novacoin/Hash.cs
@@ -19,7 +19,7 @@ namespace Novacoin
         /// <summary>
         /// Hash size, must be overriden
         /// </summary>
-        public virtual int hashSize 
+        public abstract int hashSize 
         {
             get; 
         }