diff --git a/lib/blockchain/chaindb.js b/lib/blockchain/chaindb.js
index 896d83e1..5783792a 100644
--- a/lib/blockchain/chaindb.js
+++ b/lib/blockchain/chaindb.js
@@ -854,7 +854,7 @@ ChainDB.prototype.hasCoins = function hasCoins(hash) {
  * @returns {Promise} - Returns {@link CoinView}.
  */
 
-ChainDB.prototype.getCoinView = co(function* getCoinView(tx, callback) {
+ChainDB.prototype.getCoinView = co(function* getCoinView(tx) {
   var view = new CoinView();
   var prevout = tx.getPrevout();
   var i, hash, coins;
diff --git a/lib/mempool/mempool.js b/lib/mempool/mempool.js
index 2d9cfd08..0a29a63f 100644
--- a/lib/mempool/mempool.js
+++ b/lib/mempool/mempool.js
@@ -24,6 +24,8 @@ var Outpoint = require('../primitives/outpoint');
 var TX = require('../primitives/tx');
 var Coin = require('../primitives/coin');
 var MempoolEntry = require('./mempoolentry');
+var CoinView = require('../blockchain/coinview');
+var Coins = require('../blockchain/coins');
 
 /**
  * Represents a mempool.
@@ -1656,7 +1658,7 @@ Mempool.prototype.fillAllCoins = co(function* fillAllCoins(tx) {
  * @returns {Promise} - Returns {@link CoinView}.
  */
 
-Mempool.prototype.getCoinView = co(function* getCoinView(tx) {
+Mempool.prototype.getCoinViewSlow = co(function* getCoinViewSlow(tx) {
   var view = yield this.chain.db.getCoinView(tx);
   var entries = view.toArray();
   var i, coins, entry;
@@ -1678,6 +1680,41 @@ Mempool.prototype.getCoinView = co(function* getCoinView(tx) {
   return view;
 });
 
+/**
+ * Get coin viewpoint.
+ * @param {TX} tx
+ * @returns {Promise} - Returns {@link CoinView}.
+ */
+
+Mempool.prototype.getCoinView = co(function* getCoinView(tx) {
+  var view = new CoinView();
+  var prevout = tx.getPrevout();
+  var i, entry, hash, coins;
+
+  for (i = 0; i < prevout.length; i++) {
+    hash = prevout[i];
+    entry = this.getEntry(hash);
+
+    if (entry) {
+      view.addTX(entry.tx, -1);
+      continue;
+    }
+
+    coins = yield this.chain.db.getCoins(hash);
+
+    if (!coins) {
+      coins = new Coins();
+      coins.hash = hash;
+      view.add(coins);
+      continue;
+    }
+
+    view.add(coins);
+  }
+
+  return view;
+});
+
 /**
  * Get a snapshot of all transaction hashes in the mempool. Used
  * for generating INV packets in response to MEMPOOL packets.