diff --git a/lib/bcoin/mempool.js b/lib/bcoin/mempool.js
index 9bc7b1d4..9ae27020 100644
--- a/lib/bcoin/mempool.js
+++ b/lib/bcoin/mempool.js
@@ -1196,38 +1196,6 @@ Mempool.prototype.removeOrphan = function removeOrphan(tx, callback) {
   });
 };
 
-/**
- * Test a transaction hash to see if it has been seen as
- * an orphan, in the mempool, or in the blockchain. This
- * is the closest thing to a function
- * named "DoesThisTransactionExist()".
- * @param {TX} tx
- * @param {Function} callback - Returns [Error, Boolean].
- */
-
-Mempool.prototype.seenTX = function seenTX(tx, callback) {
-  var self = this;
-  var hash = tx.hash('hex');
-
-  return this.hasOrphan(hash, function(err, result) {
-    if (err)
-      return callback(err);
-
-    if (result)
-      return callback(null, true);
-
-    return self.hasTX(hash, function(err, result) {
-      if (err)
-        return callback(err);
-
-      if (result)
-        return callback(null, true);
-
-      return self.chain.db.hasTX(hash, callback);
-    });
-  });
-};
-
 /**
  * Fill transaction with all unspent _and spent_
  * coins. Similar to {@link Mempool#fillHistory}