diff --git a/lib/common/utils.js b/lib/common/utils.js
index 276a447..a6dde9c 100644
--- a/lib/common/utils.js
+++ b/lib/common/utils.js
@@ -126,32 +126,6 @@ Utils.buildTx = function(txp) {
   return t;
 };
 
-Utils.deriveAddress = function(scriptType, publicKeyRing, path, m, network) {
-  $.checkArgument(_.contains(_.values(Constants.SCRIPT_TYPES), scriptType));
-
-  var publicKeys = _.map(publicKeyRing, function(item) {
-    var xpub = new Bitcore.HDPublicKey(item.xPubKey);
-    return xpub.derive(path).publicKey;
-  });
-
-  var bitcoreAddress;
-  switch (scriptType) {
-    case Constants.SCRIPT_TYPES.P2SH:
-      bitcoreAddress = Address.createMultisig(publicKeys, m, network);
-      break;
-    case Constants.SCRIPT_TYPES.P2PKH:
-      $.checkState(_.isArray(publicKeys) && publicKeys.length == 1);
-      bitcoreAddress = Address.fromPublicKey(publicKeys[0], network);
-      break;
-  }
-
-  return {
-    address: bitcoreAddress.toString(),
-    path: path,
-    publicKeys: _.invoke(publicKeys, 'toString'),
-  };
-};
-
 Utils.formatAmount = function(satoshis, unit, opts) {
   var UNITS = {
     btc: {
diff --git a/lib/model/address.js b/lib/model/address.js
index 574a4a4..9b024ab 100644
--- a/lib/model/address.js
+++ b/lib/model/address.js
@@ -1,5 +1,8 @@
 'use strict';
 
+var $ = require('preconditions').singleton();
+var _ = require('lodash');
+
 var Bitcore = require('bitcore-lib');
 var Constants = require('../common/constants');
 
@@ -39,4 +42,40 @@ Address.fromObj = function(obj) {
   return x;
 };
 
+Address._deriveAddress = function(scriptType, publicKeyRing, path, m, network) {
+  $.checkArgument(_.contains(_.values(Constants.SCRIPT_TYPES), scriptType));
+
+  var publicKeys = _.map(publicKeyRing, function(item) {
+    var xpub = new Bitcore.HDPublicKey(item.xPubKey);
+    return xpub.derive(path).publicKey;
+  });
+
+  var bitcoreAddress;
+  switch (scriptType) {
+    case Constants.SCRIPT_TYPES.P2SH:
+      bitcoreAddress = Bitcore.Address.createMultisig(publicKeys, m, network);
+      break;
+    case Constants.SCRIPT_TYPES.P2PKH:
+      $.checkState(_.isArray(publicKeys) && publicKeys.length == 1);
+      bitcoreAddress = Bitcore.Address.fromPublicKey(publicKeys[0], network);
+      break;
+  }
+
+  return {
+    address: bitcoreAddress.toString(),
+    path: path,
+    publicKeys: _.invoke(publicKeys, 'toString'),
+  };
+};
+
+Address.derive = function(walletId, scriptType, publicKeyRing, path, m, network, isChange) {
+  var raw = Address._deriveAddress(scriptType, publicKeyRing, path, m, network);
+  return Address.create(_.extend(raw, {
+    walletId: walletId,
+    type: scriptType,
+    isChange: isChange,
+  }));
+};
+
+
 module.exports = Address;
diff --git a/lib/model/copayer.js b/lib/model/copayer.js
index 6071e20..433bb57 100644
--- a/lib/model/copayer.js
+++ b/lib/model/copayer.js
@@ -10,7 +10,7 @@ var Address = require('./address');
 var AddressManager = require('./addressmanager');
 var Bitcore = require('bitcore-lib');
 
-var Common = require('../common');
+var Constants = require('../common/constants');
 
 function Copayer() {};
 
@@ -41,7 +41,7 @@ Copayer.create = function(opts) {
     signature: opts.signature,
   }];
 
-  var derivationStrategy = opts.derivationStrategy || Common.Constants.DERIVATION_STRATEGIES.BIP45;
+  var derivationStrategy = opts.derivationStrategy || Constants.DERIVATION_STRATEGIES.BIP45;
   if (AddressManager.supportsCopayerBranches(derivationStrategy)) {
     x.addressManager = AddressManager.create({
       derivationStrategy: derivationStrategy,
@@ -87,13 +87,7 @@ Copayer.prototype.createAddress = function(wallet, isChange) {
   $.checkState(wallet.isComplete());
 
   var path = this.addressManager.getNewAddressPath(isChange);
-  var raw = Address.create(Common.Utils.deriveAddress(wallet.addressType, wallet.publicKeyRing, path, wallet.m, wallet.network));
-  var address = Address.create(_.extend(raw, {
-    walletId: wallet.id,
-    type: wallet.addressType,
-  }));
-
-  address.isChange = isChange;
+  var address = Address.derive(wallet.id, wallet.addressType, wallet.publicKeyRing, path, wallet.m, wallet.network, isChange);
   return address;
 };
 
diff --git a/lib/model/wallet.js b/lib/model/wallet.js
index a6ac737..afe2a15 100644
--- a/lib/model/wallet.js
+++ b/lib/model/wallet.js
@@ -9,8 +9,7 @@ var Address = require('./address');
 var Copayer = require('./copayer');
 var AddressManager = require('./addressmanager');
 
-var Common = require('../common');
-var Constants = Common.Constants;
+var Constants = require('../common/constants');
 
 function Wallet() {};
 
@@ -155,12 +154,7 @@ Wallet.prototype.createAddress = function(isChange) {
   var self = this;
 
   var path = this.addressManager.getNewAddressPath(isChange);
-  var raw = Common.Utils.deriveAddress(this.addressType, this.publicKeyRing, path, this.m, this.network);
-  var address = Address.create(_.extend(raw, {
-    walletId: self.id,
-    type: self.addressType,
-  }));
-  address.isChange = isChange;
+  var address = Address.derive(self.id, this.addressType, this.publicKeyRing, path, this.m, this.network, isChange);
   return address;
 };