Updated specification

Updated reference benchmark result

src/tests/benchmark.cpp

@@ -241,7 +241,7 @@ int main(int argc, char** argv) {
 		std::cout << "Calculated result: ";
 		result.print(std::cout);
 		if (noncesCount == 1000 && seedValue == 0)
-			std::cout << "Reference result:  0063222e8c4c687cc7c91ea86f3747d8dbd53af6bdf937167736b9284e4d7dac" << std::endl;
+			std::cout << "Reference result:  2599bd6d913b0eadef37857c498d44a24fa6bdd02c20deff8c837f9e5bb25e56" << std::endl;
 		if (!miningMode) {
 			std::cout << "Performance: " << 1000 * elapsed / noncesCount << " ms per hash" << std::endl;
 		}