consider difficulty 1 as 0.01

src/server/poolserver/Stratum/Client.h

@@ -116,7 +116,7 @@ namespace Stratum
             
             // Send difficulty update
             JSON params;
-            params.Add(int64(_diff));
+            params.Add(double(_diff)/100); // diff 1 = 0.01
             
             JSON msg;
             msg["id"];

src/server/shared/Gostcoin/Gostcoin.h

@@ -12,7 +12,8 @@ namespace Gostcoin
 {
     inline BigInt TargetToDiff(BigInt val)
     {
-        static BigInt c("0x00000000ffff0000000000000000000000000000000000000000000000000000");
+		// we consider diff=1 as 0.01
+        static BigInt c("0x0000ffff00000000000000000000000000000000000000000000000000000000");
         return (c / val);
     }