Minimum BTC order amount set to 0.001 BTC. Anything lower than that w…

…ill result in greater than 10% fees.

src/main/java/org/qortal/crosschain/Bitcoin.java

@@ -19,6 +19,8 @@ public class Bitcoin extends Bitcoiny {
 
 	public static final String CURRENCY_CODE = "BTC";
 
+	private static final long MINIMUM_ORDER_AMOUNT = 100000; // 0.001 BTC minimum order, due to high fees
+
 	// Temporary values until a dynamic fee system is written.
 	private static final long OLD_FEE_AMOUNT = 4_000L; // Not 5000 so that existing P2SH-B can output 1000, avoiding dust issue, leaving 4000 for fees.
 	private static final long NEW_FEE_TIMESTAMP = 1598280000000L; // milliseconds since epoch
@@ -183,6 +185,11 @@ public static synchronized void resetForTesting() {
 		instance = null;
 	}
 
+	@Override
+	public long getMinimumOrderAmount() {
+		return MINIMUM_ORDER_AMOUNT;
+	}
+
 	// Actual useful methods for use by other classes
 
 	/**