MIN_LEVEL_FOR_BLOCK_SUBMISSION temporarily increased to 6.

This is to hopefully improve network stability whilst a more advanced solution is being worked on. It also allows us to collect some data on how well the network behaves when there are less block candidates. It should have no effect on minting rewards (other than any side effects as a result of improved network stability).

src/main/java/org/qortal/controller/BlockMinter.java

@@ -51,7 +51,7 @@ public class BlockMinter extends Thread {
 	// Min account level to submit blocks
 	// This is an unvalidated version of Blockchain.minAccountLevelToMint
 	// and exists only to reduce block candidates by default.
-	private static int MIN_LEVEL_FOR_BLOCK_SUBMISSION = 3;
+	private static int MIN_LEVEL_FOR_BLOCK_SUBMISSION = 6;
 
 	// Constructors