diff --git a/src/main/java/org/qortal/controller/tradebot/TradeBot.java b/src/main/java/org/qortal/controller/tradebot/TradeBot.java
index 1786a130..4a44eaa9 100644
--- a/src/main/java/org/qortal/controller/tradebot/TradeBot.java
+++ b/src/main/java/org/qortal/controller/tradebot/TradeBot.java
@@ -239,6 +239,11 @@ public class TradeBot implements Listener {
 		if (!(event instanceof Synchronizer.NewChainTipEvent))
 			return;
 
+		// Don't process trade bots or broadcast presence timestamps if our chain is more than 30 minutes old
+		final Long minLatestBlockTimestamp = NTP.getTime() - (30 * 60 * 1000L);
+		if (!Controller.getInstance().isUpToDate(minLatestBlockTimestamp))
+			return;
+
 		synchronized (this) {
 			expireOldPresenceTimestamps();