diff --git a/lib/bcoin/hd.js b/lib/bcoin/hd.js
index dd45e04d..d9632ce7 100644
--- a/lib/bcoin/hd.js
+++ b/lib/bcoin/hd.js
@@ -844,7 +844,7 @@ HDPrivateKey.prototype.toJSON = function toJSON(passphrase) {
     return json;
   }
 
-  json.xpubkey = this.hd.xpubkey;
+  json.xpubkey = this.xpubkey;
 
   return json;
 };
diff --git a/lib/bcoin/http.js b/lib/bcoin/http.js
index 6b1e66e5..710b14df 100644
--- a/lib/bcoin/http.js
+++ b/lib/bcoin/http.js
@@ -182,72 +182,94 @@ HTTPServer.prototype._init = function _init() {
   // Create/get wallet
   this.post('/wallet/:id', function(req, res, next, send) {
     req.body.id = req.params.id;
-    self.node.walletdb.createJSON(req.body.id, req.body, function(err, json) {
+    self.node.walletdb.create(req.body, function(err, wallet) {
+      var wallet;
+
       if (err)
         return next(err);
 
-      if (!json)
+      if (!wallet)
         return send(404);
 
+      json = wallet.toJSON();
+      wallet.destroy();
+
       send(200, json);
     });
   });
 
   // Update wallet / sync address depth
   this.put('/wallet/:id', function(req, res, next, send) {
-    req.body.id = req.params.id;
-    self.node.walletdb.saveJSON(req.body.id, req.body, function(err, json) {
+    var id = req.params.id;
+    var receive = req.body.receiveDepth;
+    var change = req.body.changeDepth;
+    self.node.walletdb.syncDepth(id, receive, change, function(err) {
       if (err)
         return next(err);
 
       if (!json)
         return send(404);
 
-      send(200, json);
+      send(200, { success: true });
+    });
+  });
+
+  // Wallet Balance
+  this.get('/wallet/:id/balance', function(req, res, next, send) {
+    self.node.walletdb.getBalance(req.params.id, function(err, balance) {
+      if (err)
+        return next(err);
+
+      if (!coins.length)
+        return send(404);
+
+      send(200, { balance: utils.btc(balance) });
     });
   });
 
   // Wallet UTXOs
   this.get('/wallet/:id/utxo', function(req, res, next, send) {
-    self.node.walletdb.getJSON(req.params.id, function(err, json) {
+    self.node.walletdb.getUnspent(req.params.id, function(err, coins) {
       if (err)
         return next(err);
 
-      if (!json)
+      if (!coins.length)
         return send(404);
 
-      self.node.getCoinByAddress(Object.keys(json.addressMap), function(err, coins) {
-        if (err)
-          return next(err);
-
-        if (!coins.length)
-          return send(404);
-
-        send(200, coins.map(function(coin) { return coin.toJSON(); }));
-      });
+      send(200, coins.map(function(coin) { return coin.toJSON(); }));
     });
   });
 
   // Wallet TXs
   this.get('/wallet/:id/tx', function(req, res, next, send) {
-    self.node.walletdb.getJSON(req.params.id, function(err, json) {
+    self.node.walletdb.getAll(req.params.id, function(err, txs) {
       if (err)
         return next(err);
 
-      if (!json)
+      if (!txs.length)
         return send(404);
 
-      self.node.getTXByAddress(Object.keys(json.addressMap), function(err, txs) {
-        if (err)
-          return next(err);
-
-        if (!txs.length)
-          return send(404);
-
-        send(200, coins.map(function(tx) { return tx.toJSON(); }));
-      });
+      send(200, txs.map(function(tx) { return tx.toJSON(); }));
     });
   });
+
+  // Wallet Pending TXs
+  this.get('/wallet/:id/pending', function(req, res, next, send) {
+    self.node.walletdb.getPending(req.params.id, function(err, txs) {
+      if (err)
+        return next(err);
+
+      if (!txs.length)
+        return send(404);
+
+      send(200, txs.map(function(tx) { return tx.toJSON(); }));
+    });
+  });
+
+  // Emit events for any wallet txs that come in.
+  this.node.on('wallet tx', function(tx, ids) {
+    self.sendWebhook({ tx: tx, ids: ids });
+  });
 };
 
 HTTPServer.prototype.listen = function listen(port, host, callback) {
@@ -370,6 +392,42 @@ HTTPServer.prototype.del = function del(path, callback) {
   this.routes.del.push({ path: path, callback: callback });
 };
 
+// Send webhooks to notify other servers
+// of incoming txs and wallet updates.
+HTTPServer.prototype.sendWebhook = function sendWebhook(msg, callback) {
+  var request, body, secret, hmac;
+
+  callback = utils.ensure(callback);
+
+  if (!this.options.webhook)
+    return callback();
+
+  try {
+    request = require('request');
+  } catch (e) {
+    return callback(e);
+  }
+
+  body = new Buffer(JSON.stringify(msg) + '\n', 'utf8');
+  secret = new Buffer(this.options.webhook.secret || '', 'utf8');
+  hmac = utils.sha512hmac(body, secret);
+
+  request({
+    method: 'POST',
+    uri: this.options.webhook.endpoint,
+    headers: {
+      'Content-Type': 'application/json; charset=utf-8',
+      'Content-Length': body.length + '',
+      'X-Bcoin-Hmac': hmac.toString('hex')
+    },
+    body: body
+  }, function(err, res, body) {
+    if (err)
+      return callback(err);
+    return callback();
+  });
+};
+
 /**
  * Helpers
  */
diff --git a/lib/bcoin/node.js b/lib/bcoin/node.js
index 73d1d967..c05159e8 100644
--- a/lib/bcoin/node.js
+++ b/lib/bcoin/node.js
@@ -81,7 +81,8 @@ Fullnode.prototype._init = function _init() {
   // and blockdb.
   this.http = new bcoin.http(this, {
     key: this.options.httpKey,
-    cert: this.options.httpCert
+    cert: this.options.httpCert,
+    webhook: this.options.webhook
   });
 
   // Bind to errors
@@ -97,12 +98,20 @@ Fullnode.prototype._init = function _init() {
     self.emit('error', err);
   });
 
+  this.walletdb.on('error', function(err) {
+    self.emit('error', err);
+  });
+
   // Emit events for any TX we see that's
   // is relevant to one of our wallets.
+  this.walletdb.on('wallet tx', function(tx, ids) {
+    self.emit('wallet tx', tx, ids);
+  });
+
   this.on('tx', function(tx) {
-    self.walletdb.tx.addTX(tx, function(err, updated) {
-      if (updated)
-        self.emit('wallet tx', tx);
+    self.walletdb.tx.addTX(tx, function(err) {
+      if (err)
+        self.emit('error', err);
     });
   });
 
diff --git a/lib/bcoin/node2.js b/lib/bcoin/node2.js
index 8ef701ab..34afb643 100644
--- a/lib/bcoin/node2.js
+++ b/lib/bcoin/node2.js
@@ -43,7 +43,7 @@ function Node(options) {
   this.pool = null;
   this.chain = null;
   this.miner = null;
-  this.profiler = null;
+  this.walletdb = null;
 
   Node.global = this;
 }
diff --git a/lib/bcoin/txdb.js b/lib/bcoin/txdb.js
index c220ac0b..a95f84d1 100644
--- a/lib/bcoin/txdb.js
+++ b/lib/bcoin/txdb.js
@@ -14,18 +14,27 @@ var EventEmitter = require('events').EventEmitter;
  * TXPool
  */
 
-function TXPool(prefix, db) {
+function TXPool(prefix, db, options) {
   var self = this;
 
   if (!(this instanceof TXPool))
-    return new TXPool(wallet, txs);
+    return new TXPool(prefix, db, options);
 
   EventEmitter.call(this);
 
+  if (!options)
+    options = {};
+
   this.db = db;
   this.prefix = prefix || 'pool';
+  this.options = options;
   this.busy = false;
   this.jobs = [];
+
+  if (options.addressFilter)
+    this._hasAddress = options.addressFilter;
+
+  this.setMaxListeners(Number.MAX_SAFE_INTEGER);
 }
 
 utils.inherits(TXPool, EventEmitter);
@@ -93,6 +102,7 @@ TXPool.prototype._add = function add(tx, callback, force) {
   var p = this.prefix + '/';
   var hash = tx.hash('hex');
   var updated = false;
+  var own = false;
   var batch;
 
   var unlock = this._lock(add, [tx, callback], force);
@@ -112,6 +122,7 @@ TXPool.prototype._add = function add(tx, callback, force) {
     batch = self.db.batch();
 
     if (existing) {
+      own = true;
       // Tricky - update the tx and coin in storage,
       // and remove pending flag to mark as confirmed.
       if (existing.ts === 0 && tx.ts !== 0) {
@@ -217,6 +228,7 @@ TXPool.prototype._add = function add(tx, callback, force) {
             return done(null, false);
 
           updated = true;
+          own = true;
 
           type = input.getType();
           address = input.getAddress();
@@ -250,6 +262,8 @@ TXPool.prototype._add = function add(tx, callback, force) {
           if (!result)
             return next();
 
+          own = true;
+
           self.getTX(input.prevout.hash, function(err, result) {
             if (err)
               return done(err);
@@ -305,6 +319,7 @@ TXPool.prototype._add = function add(tx, callback, force) {
 
           key = hash + '/' + i;
           coin = bcoin.coin(tx, i);
+          own = true;
 
           self.db.get(p + 'o/' + key, function(err, orphans) {
             var some;
@@ -400,6 +415,9 @@ TXPool.prototype._add = function add(tx, callback, force) {
         if (err)
           return done(err);
 
+        if (!own)
+          return done(null, false);
+
         batch.put(p + 't/t/' + hash, tx.toExtended());
         if (tx.ts === 0)
           batch.put(p + 'p/t/' + hash, new Buffer([]));
@@ -418,11 +436,12 @@ TXPool.prototype._add = function add(tx, callback, force) {
 
           self.emit('tx', tx);
 
-          if (tx.ts !== 0)
-            self.emit('confirmed', tx);
+          if (updated) {
+            if (tx.ts !== 0)
+              self.emit('confirmed', tx);
 
-          if (updated)
             self.emit('updated', tx);
+          }
 
           return done(null, true);
         });
@@ -856,6 +875,8 @@ TXPool.prototype.getHeightHashes = function getHeightHashes(height, callback) {
       if (err)
         return callback(err);
 
+      txs = utils.uniqs(txs);
+
       return callback(null, txs);
     });
   }
diff --git a/lib/bcoin/wallet.js b/lib/bcoin/wallet.js
index 21776384..6f920115 100644
--- a/lib/bcoin/wallet.js
+++ b/lib/bcoin/wallet.js
@@ -44,6 +44,8 @@ function Wallet(options) {
     options.master = bcoin.hd.fromSeed();
 
   this.options = options;
+  this.db = options.db || null;
+  this.tx = options.tx || null;
   this.provider = options.provider || null;
   this.addresses = [];
   this.master = options.master || null;
@@ -87,6 +89,10 @@ function Wallet(options) {
 
   this.id = this.getID();
 
+  // Non-alphanumeric IDs will break leveldb sorting.
+  if (!/^[a-zA-Z0-9]$/.test(this.id))
+    throw new Error('Wallet IDs must be alphanumeric.');
+
   this.addKey(this.accountKey);
 
   (options.keys || []).forEach(function(key) {
@@ -124,6 +130,63 @@ Wallet.prototype._init = function _init() {
   assert(this.receiveAddress);
   assert(!this.receiveAddress.change);
   assert(this.changeAddress.change);
+
+  if (!this.tx)
+    return;
+
+  this.tx.on('tx', this._onTX = function(tx) {
+    if (!self.ownInput(tx) && !self.ownOutput(tx))
+      return;
+
+    self.emit('tx', tx);
+  });
+
+  this.tx.on('updated', this._onUpdated = function(tx) {
+    if (!self.ownInput(tx) && !self.ownOutput(tx))
+      return;
+
+    self.emit('updated', tx);
+
+    if (!self.provider)
+      return;
+
+    self.getBalance(function(err, balance) {
+      if (err)
+        return self.emit('error', err);
+
+      self.emit('balance', balance);
+    });
+  });
+
+  this.tx.on('confirmed', this._onConfirmed = function(tx) {
+    if (!self.ownInput(tx) && !self.ownOutput(tx))
+      return;
+
+    self.syncOutputDepth(tx);
+    self.emit('confirmed', tx);
+  });
+};
+
+Wallet.prototype.destroy = function destroy() {
+  if (this.tx) {
+    if (this._onTX) {
+      this.tx.removeListener('tx', this._onTX);
+      delete this._onTX;
+    }
+
+    if (this._onUpdated) {
+      this.tx.removeListener('updated', this._onUpdated);
+      delete this._onUpdated;
+    }
+
+    if (this._onConfirmed) {
+      this.tx.removeListener('confirmed', this._onConfirmed);
+      delete this._onConfirmed;
+    }
+  }
+  this.db = null;
+  this.tx = null;
+  this.provider = null;
 };
 
 Wallet.prototype.addKey = function addKey(key) {
@@ -341,6 +404,10 @@ Wallet.prototype.deriveAddress = function deriveAddress(change, index) {
   if (this.witness)
     this.addressMap[address.getProgramAddress()] = data.path;
 
+  // Update the DB with the new address.
+  if (this.db)
+    this.db.update(this, address);
+
   this.emit('add address', address);
 
   return address;
@@ -473,27 +540,9 @@ Wallet.prototype.fillPrevout = function fillPrevout(tx, callback) {
   return this.provider.fillCoin(tx, callback);
 };
 
-Wallet.prototype.sync = function sync(callback) {
+Wallet.prototype.createTX = function createTX(options, outputs, callback) {
   var self = this;
-
-  callback = utils.ensure(callback);
-
-  this.getUnspent(function(err, unspent) {
-    if (err)
-      return callback(err);
-
-    unspent.forEach(function(coin) {
-      self.syncOutputDepth(coin);
-    });
-
-    return callback();
-  });
-};
-
-Wallet.prototype.tx = function _tx(options, outputs, callback) {
-  var self = this;
-  var tx = bcoin.mtx();
-  var target;
+  var tx;
 
   if (typeof outputs === 'function') {
     callback = outputs;
@@ -508,6 +557,9 @@ Wallet.prototype.tx = function _tx(options, outputs, callback) {
   if (!Array.isArray(outputs))
     outputs = [outputs];
 
+  // Create mutable tx
+  tx = bcoin.mtx();
+
   // Add the outputs
   outputs.forEach(function(output) {
     tx.addOutput(output);
@@ -521,20 +573,9 @@ Wallet.prototype.tx = function _tx(options, outputs, callback) {
     // Sort members a la BIP69
     tx.sortMembers();
 
-    // Find the necessary locktime if there is
-    // a checklocktimeverify script in the unspents.
-    target = tx.getTargetLocktime();
-
-    // No target value. The unspents have an
-    // incompatible locktime type.
-    if (!target)
-      return callback(new Error('Incompatible locktime.'));
-
     // Set the locktime to target value or
     // `height - whatever` to avoid fee sniping.
-    if (target.value > 0)
-      tx.setLocktime(target.value);
-    else if (options.locktime != null)
+    if (options.locktime != null)
       tx.setLocktime(options.locktime);
     else
       tx.avoidFeeSniping();
@@ -758,12 +799,10 @@ Wallet.prototype.sign = function sign(tx, type, index) {
 };
 
 Wallet.prototype.addTX = function addTX(tx, callback) {
-  this.syncOutputDepth(tx);
+  if (!this.tx)
+    return callback(new Error('No transaction pool available.'));
 
-  if (!this.provider)
-    return callback(new Error('No wallet provider available.'));
-
-  return this.provider.addTX(tx, callback);
+  return this.tx.add(tx, callback);
 };
 
 Wallet.prototype.getAll = function getAll(callback) {
@@ -929,6 +968,10 @@ Wallet.prototype.toJSON = function toJSON() {
     receiveDepth: this.receiveDepth,
     changeDepth: this.changeDepth,
     master: this.master.toJSON(this.options.passphrase),
+    // Store account key to:
+    // a. save ourselves derivations.
+    // b. allow deriving of addresses without decrypting the master key.
+    accountKey: this.accountKey.xpubkey,
     addressMap: this.addressMap,
     keys: this.keys.map(function(key) {
       return key.xpubkey;
@@ -961,6 +1004,39 @@ Wallet._fromJSON = function _fromJSON(json, passphrase) {
   };
 };
 
+// For updating the address table quickly
+// without decrypting the master key.
+Wallet.sync = function sync(json, options) {
+  var master, wallet;
+
+  assert.equal(json.v, 3);
+  assert.equal(json.name, 'wallet');
+
+  if (json.network)
+    assert.equal(json.network, network.type);
+
+  master = json.master;
+  json.master = json.accountKey;
+  wallet = new Wallet(json);
+
+  if (options.txs != null) {
+    options.txs.forEach(function(tx) {
+      wallet.syncOutputDepth(tx);
+    });
+  }
+
+  if (options.receiveDepth != null)
+    wallet.setReceiveDepth(options.receiveDepth);
+
+  if (options.changeDepth != null)
+    wallet.setChangeDepth(options.changeDepth);
+
+  wallet = wallet.toJSON();
+  wallet.master = master;
+
+  return wallet;
+};
+
 Wallet.fromJSON = function fromJSON(json, passphrase) {
   return new Wallet(Wallet._fromJSON(json, passphrase));
 };
diff --git a/lib/bcoin/walletdb.js b/lib/bcoin/walletdb.js
index c9b03272..784a7e66 100644
--- a/lib/bcoin/walletdb.js
+++ b/lib/bcoin/walletdb.js
@@ -83,7 +83,7 @@ WalletDB.prototype.dump = function dump(callback) {
         });
       }
 
-      records[key] = value.slice(0, 50).toString('hex');
+      records[key] = value;
 
       next();
     });
@@ -116,8 +116,75 @@ WalletDB.prototype._init = function _init() {
 
   this.db = WalletDB._db[this.file];
 
-  this.tx = new bcoin.txdb('w', this.db);
-  this.tx._hasAddress = this.hasAddress.bind(this);
+  this.tx = new bcoin.txdb('w', this.db, {
+    addressFilter: this.hasAddress.bind(this)
+  });
+
+  this.tx.on('error', function(err) {
+    self.emit('error', err);
+  });
+
+  this.tx.on('updated', function(tx) {
+    self.getIDs(tx.getOutputAddresses(), function(err, ids) {
+      if (err)
+        return self.emit('error', err);
+
+      self.emit('wallet tx', tx, ids);
+
+      // Only sync for confirmed txs.
+      if (tx.ts === 0)
+        return;
+
+      utils.forEachSerial(ids, function(id, next) {
+        self.getJSON(id, function(err, json) {
+          if (err) {
+            self.emit('error', err);
+            return next();
+          }
+
+          // Allocate new addresses if necessary.
+          json = bcoin.wallet.sync(json, { txs: [tx] });
+
+          self.saveJSON(id, json, function(err) {
+            if (err)
+              return next(err);
+            next();
+          });
+        });
+      }, function(err) {
+        if (err)
+          self.emit('error', err);
+      });
+    });
+  });
+};
+
+WalletDB.prototype.syncDepth = function syncDepth(id, changeDepth, receiveDepth, callback) {
+  callback = utils.ensure(callback);
+
+  if (!receiveDepth)
+    receiveDepth = 0;
+
+  if (!changeDepth)
+    changeDepth = 0;
+
+  self.getJSON(id, function(err, json) {
+    if (err)
+      return callback(err);
+
+    // Allocate new addresses if necessary.
+    json = bcoin.wallet.sync(json, {
+      receiveDepth: receiveDepth,
+      changeDepth: changeDepth
+    });
+
+    self.saveJSON(id, json, function(err) {
+      if (err)
+        return callback(err);
+      self.emit('sync depth', id, receiveDepth, changeDepth);
+      callback();
+    });
+  });
 };
 
 WalletDB.prototype.getJSON = function getJSON(id, callback) {
@@ -251,6 +318,8 @@ WalletDB.prototype._removeDB = function _removeDB(id, callback) {
 };
 
 WalletDB.prototype.get = function get(id, passphrase, callback) {
+  var self = this;
+
   if (typeof passphrase === 'function') {
     callback = passphrase;
     passphrase = null;
@@ -268,14 +337,15 @@ WalletDB.prototype.get = function get(id, passphrase, callback) {
       return callback();
 
     try {
-      wallet = bcoin.wallet.fromJSON(options, passphrase);
-      wallet.provider = self;
+      options = bcoin.wallet._fromJSON(options, passphrase);
+      options.db = self;
+      options.tx = self.tx;
+      options.provider = self;
+      wallet = new bcoin.wallet(options);
     } catch (e) {
       return callback(e);
     }
 
-    wallet.on('add address', self._onAddress(wallet, wallet.id));
-
     return callback(null, wallet);
   });
 };
@@ -286,14 +356,8 @@ WalletDB.prototype.save = function save(options, callback) {
 
   callback = utils.ensure(callback);
 
-  if (options instanceof bcoin.wallet) {
-    if (!options.provider) {
-      options.on('add address', self._onAddress(options, options.id));
-      options.provider = self;
-    }
-    if (options instanceof bcoin.wallet)
-      options = options.toJSON();
-  }
+  if (options instanceof bcoin.wallet)
+    assert(options.db === this);
 
   this.saveJSON(options.id, options, callback);
 };
@@ -304,7 +368,7 @@ WalletDB.prototype.remove = function remove(id, callback) {
   callback = utils.ensure(callback);
 
   if (id instanceof bcoin.wallet) {
-    id.provider = null;
+    id.destroy();
     id = id.id;
   }
 
@@ -337,13 +401,18 @@ WalletDB.prototype.create = function create(options, callback) {
 
     if (json) {
       try {
-        wallet = bcoin.wallet.fromJSON(json, options.passphrase);
-        wallet.provider = self;
+        options = bcoin.wallet._fromJSON(json, options.passphrase);
+        options.db = self;
+        options.tx = self.tx;
+        options.provider = self;
+        wallet = new bcoin.wallet(options);
       } catch (e) {
         return callback(e);
       }
       done();
     } else {
+      options.db = self;
+      options.tx = self.tx;
       options.provider = self;
       wallet = new bcoin.wallet(options);
       self.saveJSON(wallet.id, wallet.toJSON(), done);
@@ -353,44 +422,46 @@ WalletDB.prototype.create = function create(options, callback) {
       if (err)
         return callback(err);
 
-      wallet.on('add address', self._onAddress(wallet, wallet.id));
-
       return callback(null, wallet);
     }
   });
 };
 
-WalletDB.prototype._onAddress = function _onAddress(wallet, id) {
+WalletDB.prototype.update = function update(wallet, address) {
   var self = this;
-  return function(address) {
-    var batch = self.db.batch();
+  var batch;
 
+  // Ugly hack to avoid extra writes.
+  if (!wallet.changeAddress && wallet.changeDepth > 1)
+    return;
+
+  batch = this.db.batch();
+
+  batch.put(
+    'w/a/' + address.getKeyAddress() + '/' + wallet.id,
+    new Buffer([]));
+
+  if (address.type === 'multisig') {
     batch.put(
-      'w/a/' + address.getKeyAddress() + '/' + id,
+      'w/a/' + address.getScriptAddress() + '/' + wallet.id,
       new Buffer([]));
+  }
 
-    if (address.type === 'multisig') {
-      batch.put(
-        'w/a/' + address.getScriptAddress() + '/' + id,
-        new Buffer([]));
-    }
+  if (address.witness) {
+    batch.put(
+      'w/a/' + address.getProgramAddress() + '/' + wallet.id,
+      new Buffer([]));
+  }
 
-    if (address.witness) {
-      batch.put(
-        'w/a/' + address.getProgramAddress() + '/' + id,
-        new Buffer([]));
-    }
+  batch.write(function(err) {
+    if (err)
+      self.emit('error', err);
 
-    batch.write(function(err) {
+    self._saveDB(wallet.id, wallet.toJSON(), function(err) {
       if (err)
         self.emit('error', err);
-
-      self._saveDB(wallet.id, wallet.toJSON(), function(err) {
-        if (err)
-          self.emit('error', err);
-      });
     });
-  };
+  });
 };
 
 WalletDB.prototype.addTX = function addTX(tx, callback) {
@@ -448,7 +519,8 @@ WalletDB.prototype.getLast = function getLast(id, callback) {
 };
 
 WalletDB.prototype.getAddresses = function getAddresses(id, callback) {
-  if (typeof id === 'string')
+  // Try to avoid a database lookup if we can...
+  if (typeof id === 'string' && bcoin.address.validate(id))
     return callback(null, [id]);
 
   if (Array.isArray(id))
@@ -476,44 +548,6 @@ WalletDB.prototype.getAddresses = function getAddresses(id, callback) {
   });
 };
 
-WalletDB.prototype.getIDs = function _getIDs(address, callback) {
-  var self = this;
-  var ids = [];
-
-  var iter = this.db.db.iterator({
-    gte: 'w/a/' + address,
-    lte: 'w/a/' + address + '~',
-    keys: true,
-    values: false,
-    fillCache: false,
-    keyAsBuffer: false
-  });
-
-  callback = utils.ensure(callback);
-
-  (function next() {
-    iter.next(function(err, key, value) {
-      if (err) {
-        return iter.end(function() {
-          callback(err);
-        });
-      }
-
-      if (key === undefined) {
-        return iter.end(function(err) {
-          if (err)
-            return callback(err);
-          return callback(null, ids);
-        });
-      }
-
-      ids.push(key.split('/')[2]);
-
-      next();
-    });
-  })();
-};
-
 WalletDB.prototype.hasAddress = function hasAddress(address, callback) {
   var self = this;
 
@@ -556,6 +590,64 @@ WalletDB.prototype.hasAddress = function hasAddress(address, callback) {
   })();
 };
 
+WalletDB.prototype.getIDs = function getIDs(address, callback) {
+  var self = this;
+  var ids = [];
+
+  if (Array.isArray(address)) {
+    return utils.forEachSerial(address, function(address, next) {
+      self.getIDs(address, function(err, id) {
+        if (err)
+          return next(err);
+
+        ids = ids.concat(id);
+
+        next();
+      });
+    }, function(err) {
+      if (err)
+        return callback(err);
+
+      ids = utils.uniqs(ids);
+
+      return callback(null, ids);
+    });
+  }
+
+  var iter = this.db.db.iterator({
+    gte: 'w/a/' + address,
+    lte: 'w/a/' + address + '~',
+    keys: true,
+    values: false,
+    fillCache: false,
+    keyAsBuffer: false
+  });
+
+  callback = utils.ensure(callback);
+
+  (function next() {
+    iter.next(function(err, key, value) {
+      if (err) {
+        return iter.end(function() {
+          callback(err);
+        });
+      }
+
+      if (key === undefined) {
+        return iter.end(function(err) {
+          if (err)
+            return callback(err);
+          return callback(null, ids);
+        });
+      }
+
+      ids.push(key.split('/')[3]);
+
+      next();
+    });
+  })();
+};
+
 /**
  * Expose
  */