diff --git a/lib/bcoin/coins.js b/lib/bcoin/coins.js
index 409364dc..80532b9c 100644
--- a/lib/bcoin/coins.js
+++ b/lib/bcoin/coins.js
@@ -8,7 +8,6 @@
 var bcoin = require('./env');
 var utils = bcoin.utils;
 var assert = utils.assert;
-var constants = bcoin.protocol.constants;
 var BufferReader = require('./reader');
 var BufferWriter = require('./writer');
 
@@ -26,8 +25,6 @@ var BufferWriter = require('./writer');
  */
 
 function Coins(options) {
-  var i, coin;
-
   if (!(this instanceof Coins))
     return new Coins(options);
 
@@ -280,7 +277,7 @@ Coins.parseRaw = function parseRaw(data, hash) {
 Coins.parseCoin = function parseCoin(data, hash, index) {
   var p = new BufferReader(data);
   var i = 0;
-  var mask, prefix, version, height, coinbase, spent, script, value;
+  var mask, prefix, version, height, coinbase, script, value;
 
   version = p.readVarint();
   height = p.readU32();
diff --git a/lib/bcoin/coinview.js b/lib/bcoin/coinview.js
index 7948f62b..43b25f6f 100644
--- a/lib/bcoin/coinview.js
+++ b/lib/bcoin/coinview.js
@@ -8,7 +8,6 @@
 var bcoin = require('./env');
 var utils = bcoin.utils;
 var assert = utils.assert;
-var constants = bcoin.protocol.constants;
 
 /**
  * A collections of {@link Coins} objects.
diff --git a/lib/bcoin/hd.js b/lib/bcoin/hd.js
index cb44bfd2..7240b123 100644
--- a/lib/bcoin/hd.js
+++ b/lib/bcoin/hd.js
@@ -948,8 +948,6 @@ HDPrivateKey.fromRaw = function fromRaw(raw) {
 
 HDPrivateKey.prototype.toJSON = function toJSON(passphrase) {
   var json = {
-    v: 1,
-    name: 'hdkey',
     network: this.network,
     encrypted: false
   };
@@ -984,9 +982,6 @@ HDPrivateKey.prototype.toJSON = function toJSON(passphrase) {
 HDPrivateKey.parseJSON = function parseJSON(json, passphrase) {
   var data = {};
 
-  // assert.equal(json.v, 1);
-  // assert.equal(json.name, 'hdkey');
-
   if (json.encrypted && !passphrase)
     throw new Error('Cannot decrypt address');
 
diff --git a/lib/bcoin/keyring.js b/lib/bcoin/keyring.js
index 8f5fa370..f70bd8de 100644
--- a/lib/bcoin/keyring.js
+++ b/lib/bcoin/keyring.js
@@ -521,8 +521,6 @@ KeyRing.prototype.__defineGetter__('address', function() {
 
 KeyRing.prototype.toJSON = function toJSON() {
   return {
-    v: 1,
-    name: 'address',
     network: this.network.type,
     type: this.type,
     m: this.m,
@@ -546,8 +544,6 @@ KeyRing.prototype.toJSON = function toJSON() {
  */
 
 KeyRing.fromJSON = function fromJSON(json) {
-  assert.equal(json.v, 1);
-  assert.equal(json.name, 'address');
   return new KeyRing({
     nework: json.network,
     type: json.type,
diff --git a/lib/bcoin/peer.js b/lib/bcoin/peer.js
index d8c36f8d..b9a6be92 100644
--- a/lib/bcoin/peer.js
+++ b/lib/bcoin/peer.js
@@ -273,7 +273,6 @@ Peer.prototype._init = function init() {
  */
 
 Peer.prototype.createSocket = function createSocket(port, host) {
-  var self = this;
   var hostname = IP.hostname(host, port);
   var socket, net;
 
diff --git a/lib/bcoin/pool.js b/lib/bcoin/pool.js
index 0f57401a..8ed672a5 100644
--- a/lib/bcoin/pool.js
+++ b/lib/bcoin/pool.js
@@ -2142,7 +2142,7 @@ Pool.prototype.getIP = function getIP(callback) {
 
     ip = body.trim();
 
-    if (IP.version(ip) == -1)
+    if (IP.version(ip) === -1)
       return self.getIP2(callback);
 
     return callback(null, IP.normalize(ip));
diff --git a/lib/bcoin/txdb.js b/lib/bcoin/txdb.js
index 41c6c31d..09424a07 100644
--- a/lib/bcoin/txdb.js
+++ b/lib/bcoin/txdb.js
@@ -128,7 +128,7 @@ TXDB.prototype._testFilter = function _testFilter(addresses) {
  */
 
 TXDB.prototype.getMap = function getMap(tx, callback) {
-  var i, input, output, address, addresses, table, map;
+  var i, input, output, address, addresses, map;
 
   input = tx.getInputHashes();
   output = tx.getOutputHashes();
diff --git a/lib/bcoin/utils.js b/lib/bcoin/utils.js
index a19c2d97..20bfc26c 100644
--- a/lib/bcoin/utils.js
+++ b/lib/bcoin/utils.js
@@ -16,7 +16,6 @@ var utils = exports;
 var assert = require('assert');
 var bn = require('bn.js');
 var util = require('util');
-var IP = require('../../vendor/ip');
 var crypto, supersha, hash, aes;
 
 /**
diff --git a/lib/bcoin/wallet.js b/lib/bcoin/wallet.js
index dd67f312..5cf733a6 100644
--- a/lib/bcoin/wallet.js
+++ b/lib/bcoin/wallet.js
@@ -9,7 +9,6 @@ var bcoin = require('./env');
 var EventEmitter = require('events').EventEmitter;
 var utils = require('./utils');
 var assert = utils.assert;
-var constants = bcoin.protocol.constants;
 var BufferReader = require('./reader');
 var BufferWriter = require('./writer');
 
@@ -110,7 +109,7 @@ Wallet.prototype.open = function open(callback) {
     this.db.register(this);
   } catch (e) {
     this.emit('error', e);
-    return callback(err);
+    return callback(e);
   }
 
   this.init(function(err) {
@@ -146,7 +145,7 @@ Wallet.prototype.destroy = function destroy(callback) {
     this.db.unregister(this);
   } catch (e) {
     this.emit('error', e);
-    return callback(err);
+    return callback(e);
   }
 
   this.loaded = false;
@@ -588,7 +587,6 @@ Wallet.prototype.createTX = function createTX(options, outputs, callback) {
 Wallet.prototype.deriveInputs = function deriveInputs(tx, callback) {
   var self = this;
   var addresses = [];
-  var i;
 
   this.getInputPaths(tx, function(err, paths) {
     if (err)
@@ -634,7 +632,6 @@ Wallet.prototype.getPath = function getPath(address, callback) {
 Wallet.prototype.getInputPaths = function getInputPaths(tx, callback) {
   var self = this;
   var paths = [];
-  var i, input, address, path;
 
   if (tx instanceof bcoin.input) {
     if (!tx.coin)
@@ -682,7 +679,6 @@ Wallet.prototype.getInputPaths = function getInputPaths(tx, callback) {
 Wallet.prototype.getOutputPaths = function getOutputPaths(tx, callback) {
   var self = this;
   var paths = [];
-  var i, input, address, path;
 
   if (tx instanceof bcoin.output) {
     return this.getPath(tx.getHash(), function(err, path) {
@@ -708,7 +704,7 @@ Wallet.prototype.getOutputPaths = function getOutputPaths(tx, callback) {
     });
   }, function(err) {
     if (err)
-      return next(err);
+      return callback(err);
     return callback(null, utils.uniq(paths));
   });
 };
@@ -898,7 +894,6 @@ Wallet.prototype.scan = function scan(getByAddress, callback) {
  */
 
 Wallet.prototype.scriptInputs = function scriptInputs(tx, callback) {
-  var self = this;
   var total = 0;
   var i;
 
@@ -1377,7 +1372,6 @@ Wallet.parseJSON = function parseJSON(json) {
 
 Wallet.prototype.toRaw = function toRaw(writer) {
   var p = new BufferWriter(writer);
-  var i;
 
   p.writeU32(this.network.magic);
   p.writeVarString(this.id, 'utf8');
@@ -1900,7 +1894,6 @@ Account.prototype.deriveChange = function deriveChange(index) {
  */
 
 Account.prototype.deriveAddress = function deriveAddress(change, index) {
-  var self = this;
   var i, key, options;
 
   assert(this.initialized);
diff --git a/lib/bcoin/walletdb.js b/lib/bcoin/walletdb.js
index d313cf7c..e0d0aebf 100644
--- a/lib/bcoin/walletdb.js
+++ b/lib/bcoin/walletdb.js
@@ -252,7 +252,6 @@ WalletDB.prototype.register = function register(wallet) {
 WalletDB.prototype.unregister = function unregister(wallet) {
   var id = wallet.id;
   var watcher = this.watchers[id];
-  var i;
 
   if (!watcher)
     return;