diff --git a/lib/bcoin/chaindb.js b/lib/bcoin/chaindb.js
index c5b5e32f..0ff282f6 100644
--- a/lib/bcoin/chaindb.js
+++ b/lib/bcoin/chaindb.js
@@ -874,7 +874,8 @@ ChainDB.prototype.removeBlock = function removeBlock(hash, batch, callback) {
 
 ChainDB.prototype.connectBlock = function connectBlock(block, view, batch, callback) {
   var self = this;
-  var undo = new BufferWriter();
+  var undo = new bcoin.coinview();
+  var hasUndo = false;
   var i, j, tx, input, output, key, addresses, address, hash, coins, raw;
 
   if (this.options.spv) {
@@ -916,7 +917,8 @@ ChainDB.prototype.connectBlock = function connectBlock(block, view, batch, callb
           batch.del(layout.C(address, input.prevout.hash, input.prevout.index));
       }
 
-      Framer.coin(input.coin, false, undo);
+      hasUndo = true;
+      undo.addCoin(input.coin);
     }
 
     for (j = 0; j < tx.outputs.length; j++) {
@@ -947,8 +949,8 @@ ChainDB.prototype.connectBlock = function connectBlock(block, view, batch, callb
     }
   }
 
-  if (undo.written > 0)
-    batch.put(layout.u(block.hash()), undo.render());
+  if (hasUndo)
+    batch.put(layout.u(block.hash()), undo.toRaw());
 
   this.emit('add block', block);
 
@@ -1395,16 +1397,7 @@ ChainDB.prototype.getCoinView = function getCoinView(block, callback) {
 
 ChainDB.prototype.getUndoCoins = function getUndoCoins(hash, callback) {
   return this.db.fetch(layout.u(hash), function(data) {
-    var p = new BufferReader(data);
-    var coins = [];
-    var coin;
-
-    while (p.left()) {
-      coin = Parser.parseCoin(p, false);
-      coins.push(new bcoin.coin(coin));
-    }
-
-    return coins;
+    return bcoin.coinview.fromRaw(data);
   }, callback);
 };
 
@@ -1416,7 +1409,7 @@ ChainDB.prototype.getUndoCoins = function getUndoCoins(hash, callback) {
 
 ChainDB.prototype.getUndoView = function getUndoView(block, callback) {
   var self = this;
-  var i, j, k, tx, input, coin;
+  var i, j, tx, input;
 
   return this.getCoinView(block, function(err, view) {
     if (err)
@@ -1429,7 +1422,7 @@ ChainDB.prototype.getUndoView = function getUndoView(block, callback) {
       if (!coins)
         return callback(null, view);
 
-      for (i = 0, k = 0; i < block.txs.length; i++) {
+      for (i = 0; i < block.txs.length; i++) {
         tx = block.txs[i];
 
         if (tx.isCoinbase())
@@ -1437,11 +1430,8 @@ ChainDB.prototype.getUndoView = function getUndoView(block, callback) {
 
         for (j = 0; j < tx.inputs.length; j++) {
           input = tx.inputs[j];
-          coin = coins[k++];
-          coin.hash = input.prevout.hash;
-          coin.index = input.prevout.index;
-          input.coin = coin;
-          view.addCoin(coin);
+          input.coin = coins.spend(input.prevout.hash, input.prevout.index);
+          view.addCoin(input.coin);
         }
       }
 
diff --git a/lib/bcoin/coinview.js b/lib/bcoin/coinview.js
index 83950f18..b556ec01 100644
--- a/lib/bcoin/coinview.js
+++ b/lib/bcoin/coinview.js
@@ -8,6 +8,8 @@
 var bcoin = require('./env');
 var utils = bcoin.utils;
 var assert = utils.assert;
+var BufferReader = require('./reader');
+var BufferWriter = require('./writer');
 
 /**
  * A collections of {@link Coins} objects.
@@ -96,6 +98,36 @@ CoinView.prototype.spend = function spend(hash, index) {
   return this.coins[hash].spend(index);
 };
 
+CoinView.prototype.toRaw = function toRaw() {
+  var keys = Object.keys(this.coins);
+  var p = new BufferWriter();
+  var out = [];
+  var i, hash;
+
+  for (i = 0; i < keys.length; i++) {
+    hash = keys[i];
+    p.writeHash(hash);
+    p.writeVarBytes(this.coins[hash].toRaw());
+  }
+
+  return p.render();
+};
+
+CoinView.fromRaw = function fromRaw(data) {
+  var p = new BufferReader(data, true);
+  var map = {};
+  var hash, coins;
+
+  while (p.left()) {
+    hash = p.readHash('hex');
+    coins = bcoin.coins.fromRaw(p.readVarBytes());
+    coins.hash = hash;
+    map[hash] = coins;
+  }
+
+  return new CoinView(map);
+};
+
 /**
  * Fill transaction(s) with coins.
  * @param {TX} tx