diff --git a/src/main/java/org/qortal/block/Block536140.java b/src/main/java/org/qortal/block/Block536140.java
index ab1ca58f..c731f95a 100644
--- a/src/main/java/org/qortal/block/Block536140.java
+++ b/src/main/java/org/qortal/block/Block536140.java
@@ -3,6 +3,47 @@ package org.qortal.block;
 import org.qortal.naming.Name;
 import org.qortal.repository.DataException;
 
+/**
+ * Block 536140
+ * <p>
+ * This block had the same problem as block 535658.
+ * <p>
+ * Original transaction:
+ * <code><pre>
+ {
+     "type": "REGISTER_NAME",
+     "timestamp": 1630701955448,
+     "reference": "5CytqtRzhP1irQjiJfKBwNkKBVM9gfvkWQEwqT49VNAofcyNHtSpqrVKB9v44NkhxytHwvfneCndCQTp3J8wU9p7",
+     "fee": "0.00100000",
+     "signature": "sPhiAfQ7MenpJAarTZ99neQHBrmyQ3jDFxRp79BTDmkRf7fMsQinuZJvWbsCzGeihr6zEjuPCD2k9srNGkzLhSS",
+     "txGroupId": 0,
+     "blockHeight": 535172,
+     "approvalStatus": "NOT_REQUIRED",
+     "creatorAddress": "QSUnyUZugWanhDtPaySLdaAGyKLzN3SurS",
+     "registrantPublicKey": "C83r2taaX3pGQTgjmb7QNnFN8GWJqZxnhwptJEViJSqM",
+     "name": "Qweb",
+     "data": "{\"age\":30}"
+ }
+ </pre></code>
+ * <p>
+ * Duplicate transaction:
+ * <code><pre>
+ {
+	 "type": "REGISTER_NAME",
+	 "timestamp": 1630777397713,
+	 "reference": "sPhiAfQ7MenpJAarTZ99neQHBrmyQ3jDFxRp79BTDmkRf7fMsQinuZJvWbsCzGeihr6zEjuPCD2k9srNGkzLhSS",
+	 "fee": "0.00100000",
+	 "signature": "45knBoCoKxraJaJWuwANTyM75Su9TAz45bvU8mQLj9wxwNvkVwrFXneLQtiNzN6ctcmNcGLTR4npiJ7PdxtxbJQA",
+	 "txGroupId": 0,
+	 "blockHeight": 536140,
+	 "approvalStatus": "NOT_REQUIRED",
+	 "creatorAddress": "QSUnyUZugWanhDtPaySLdaAGyKLzN3SurS",
+	 "registrantPublicKey": "C83r2taaX3pGQTgjmb7QNnFN8GWJqZxnhwptJEViJSqM",
+	 "name": "Qweb",
+	 "data": "Registered Name on the Qortal Chain"
+ }
+ </pre></code>
+ */
 public final class Block536140 {
 
 	private Block536140() {