diff --git a/bin/start.js b/bin/start.js
index 4da2476c..7b65c58c 100644
--- a/bin/start.js
+++ b/bin/start.js
@@ -77,11 +77,7 @@ node.on('ready', function() {
           }
 
           if(result) {
-            if(result.toJSON) {
-              response.result = result.toJSON();
-            } else {
-              response.result = result;
-            }
+            response.result = result;
           }
 
           socketCallback(response);
@@ -114,11 +110,7 @@ node.on('ready', function() {
           var results = [];
 
           for(var i = 0; i < arguments.length; i++) {
-            if(arguments[i].toJSON) {
-              results.push(arguments[i].toJSON());
-            } else {
-              results.push(arguments[i]);
-            }
+            results.push(arguments[i]);
           }
 
           var params = [event.name].concat(results);
diff --git a/example/client.js b/example/client.js
index 88a1cf9c..ded2b61e 100644
--- a/example/client.js
+++ b/example/client.js
@@ -11,7 +11,7 @@ socket.on('disconnect', function(){
 
 var message = {
   method: 'getOutputs',
-  params: ['1HTxCVrXuthad6YW5895K98XmVsdMvvBSw', true]
+  params: ['2NChMRHVCxTPq9KeyvHQUSbfLaQY55Zzzp8', true]
 };
 
 socket.send(message, function(response) {
@@ -37,8 +37,13 @@ socket.send(message2, function(response) {
   console.log(response.result);
 });
 
-socket.on('transaction', function(address, block) {
-  console.log(address, block);
+socket.on('transaction', function(obj) {
+  console.log(JSON.stringify(obj, null, 2));
 });
 
-socket.emit('subscribe', 'transaction', ['13FMwCYz3hUhwPcaWuD2M1U2KzfTtvLM89']);
\ No newline at end of file
+socket.on('address/transaction', function(obj) {
+  console.log(JSON.stringify(obj, null, 2));
+});
+
+socket.emit('subscribe', 'transaction');
+socket.emit('subscribe', 'address/transaction', ['13FMwCYz3hUhwPcaWuD2M1U2KzfTtvLM89']);
\ No newline at end of file
diff --git a/integration/regtest.js b/integration/regtest.js
index 1fcd219c..d309da6b 100644
--- a/integration/regtest.js
+++ b/integration/regtest.js
@@ -306,7 +306,8 @@ describe('Daemon Binding Functionality', function() {
       var outputs = bitcoind.getMempoolOutputs(changeAddress);
       var expected = [
         {
-          script: 'OP_DUP OP_HASH160 073b7eae2823efa349e3b9155b8a735526463a0f OP_EQUALVERIFY OP_CHECKSIG',
+          address: 'mgBCJAsvzgT2qNNeXsoECg2uPKrUsZ76up',
+          script: '76a914073b7eae2823efa349e3b9155b8a735526463a0f88ac',
           satoshis: 40000,
           txid: tx.hash,
           outputIndex: 1
diff --git a/lib/block.js b/lib/block.js
index e8499c31..4d36af54 100644
--- a/lib/block.js
+++ b/lib/block.js
@@ -48,8 +48,9 @@ Block.fromBufferReader = function(br) {
   return new Block(obj);
 };
 
-Block.prototype.toObject = function() {
+Block.prototype.toObject = Block.prototype.toJSON = function() {
   return {
+    hash: this.hash,
     version: this.version,
     prevHash: this.prevHash,
     merkleRoot: this.merkleRoot,
@@ -60,10 +61,6 @@ Block.prototype.toObject = function() {
   };
 };
 
-Block.prototype.toJSON = function() {
-  return JSON.stringify(this.toObject());
-};
-
 Block.prototype.headerToBufferWriter = function(bw) {
   /* jshint maxstatements: 20 */
 
diff --git a/lib/bus.js b/lib/bus.js
index 8772f3f8..325c09e1 100644
--- a/lib/bus.js
+++ b/lib/bus.js
@@ -11,44 +11,53 @@ function Bus(params) {
 util.inherits(Bus, events.EventEmitter);
 
 Bus.prototype.subscribe = function(name) {
-  for (var i = 0; i < this.db.modules.length; i++) {
+  var events = this.db.getPublishEvents();
+
+  for(var i = 0; i < this.db.modules.length; i++) {
     var mod = this.db.modules[i];
-    var events = mod.getPublishEvents();
-    for (var j = 0; j < events.length; j++) {
-      var event = events[j];
-      var params = Array.prototype.slice.call(arguments).slice(1);
-      params.unshift(this);
-      if (name === event.name) {
-        event.subscribe.apply(event.scope, params);
-      }
+    events = events.concat(mod.getPublishEvents());
+  }
+
+  for (var j = 0; j < events.length; j++) {
+    var event = events[j];
+    var params = Array.prototype.slice.call(arguments).slice(1);
+    params.unshift(this);
+    if (name === event.name) {
+      event.subscribe.apply(event.scope, params);
     }
   }
 };
 
 Bus.prototype.unsubscribe = function(name) {
-  for (var i = 0; i < this.db.modules.length; i++) {
+  var events = this.db.getPublishEvents();
+
+  for(var i = 0; i < this.db.modules.length; i++) {
     var mod = this.db.modules[i];
-    var events = mod.getPublishEvents();
-    for (var j = 0; j < events.length; j++) {
-      var event = events[j];
-      var params = Array.prototype.slice.call(arguments).slice(1);
-      params.unshift(this);
-      if (name === event.name) {
-        event.unsubscribe.apply(event.scope, params);
-      }
+    events = events.concat(mod.getPublishEvents());
+  }
+
+  for (var j = 0; j < events.length; j++) {
+    var event = events[j];
+    var params = Array.prototype.slice.call(arguments).slice(1);
+    params.unshift(this);
+    if (name === event.name) {
+      event.unsubscribe.apply(event.scope, params);
     }
   }
 };
 
 Bus.prototype.close = function() {
-  // Unsubscribe from all events
-  for (var i = 0; i < this.db.modules.length; i++) {
+  var events = this.db.getPublishEvents();
+
+  for(var i = 0; i < this.db.modules.length; i++) {
     var mod = this.db.modules[i];
-    var events = mod.getPublishEvents();
-    for (var j = 0; j < events.length; j++) {
-      var event = events[j];
-      event.unsubscribe.call(event.scope, this);
-    }
+    events = events.concat(mod.getPublishEvents());
+  }
+
+  // Unsubscribe from all events
+  for (var j = 0; j < events.length; j++) {
+    var event = events[j];
+    event.unsubscribe.call(event.scope, this);
   }
 };
 
diff --git a/lib/db.js b/lib/db.js
index 2420533e..cdb01423 100644
--- a/lib/db.js
+++ b/lib/db.js
@@ -32,10 +32,25 @@ function DB(options) {
 
   this.modules = [];
 
+  this.subscriptions = {
+    transaction: [],
+    block: []
+  };
 }
 
 util.inherits(DB, BaseDB);
 
+DB.prototype.initialize = function() {
+  // Add all db option modules
+  if(this._modules && this._modules.length) {
+    for(var i = 0; i < this._modules.length; i++) {
+      this.addModule(this._modules[i]);
+    }
+  }
+  this.bitcoind.on('tx', this.transactionHandler.bind(this));
+  this.emit('ready');
+}
+
 DB.prototype.getBlock = function(hash, callback) {
   var self = this;
 
@@ -91,6 +106,28 @@ DB.prototype.getTransactionWithBlockInfo = function(txid, queryMempool, callback
   });
 };
 
+DB.prototype.sendTransaction = function(tx, callback) {
+  if(tx instanceof this.Transaction) {
+    tx = tx.toString();
+  }
+  $.checkArgument(typeof tx === 'string', 'Argument must be a hex string or Transaction');
+
+  try {
+    var txid = this.bitcoind.sendTransaction(tx);
+    return callback(null, txid);
+  } catch(err) {
+    return callback(err);
+  }
+};
+
+DB.prototype.estimateFee = function(blocks, callback) {
+  var self = this;
+
+  setImmediate(function() {
+    callback(null, self.bitcoind.estimateFee(blocks));
+  });
+}
+
 DB.prototype.validateBlockData = function(block, callback) {
   // bitcoind does the validation
   setImmediate(callback);
@@ -195,6 +232,11 @@ DB.prototype.blockHandler = function(block, add, callback) {
   var self = this;
   var operations = [];
 
+  // Notify block subscribers
+  for(var i = 0; i < this.subscriptions.block.length; i++) {
+    this.subscriptions.block[i].emit('block', block.hash);
+  }
+
   async.eachSeries(
     this.modules,
     function(module, next) {
@@ -222,7 +264,9 @@ DB.prototype.blockHandler = function(block, add, callback) {
 DB.prototype.getAPIMethods = function() {
   var methods = [
     ['getBlock', this, this.getBlock, 1],
-    ['getTransaction', this, this.getTransaction, 2]
+    ['getTransaction', this, this.getTransaction, 2],
+    ['sendTransaction', this, this.sendTransaction, 1],
+    ['estimateFee', this, this.estimateFee, 1]
   ];
 
   for(var i = 0; i < this.modules.length; i++) {
@@ -232,6 +276,23 @@ DB.prototype.getAPIMethods = function() {
   return methods;
 };
 
+DB.prototype.getPublishEvents = function() {
+  return [
+    {
+      name: 'transaction',
+      scope: this,
+      subscribe: this.subscribe.bind(this, 'transaction'),
+      unsubscribe: this.unsubscribe.bind(this, 'transaction')
+    },
+    {
+      name: 'block',
+      scope: this,
+      subscribe: this.subscribe.bind(this, 'block'),
+      unsubscribe: this.unsubscribe.bind(this, 'block')
+    }
+  ];
+};
+
 DB.prototype.addModule = function(Module) {
   var module = new Module({
     db: this
@@ -240,4 +301,25 @@ DB.prototype.addModule = function(Module) {
   this.modules.push(module);
 };
 
+DB.prototype.subscribe = function(name, emitter) {
+  this.subscriptions[name].push(emitter);
+};
+
+DB.prototype.unsubscribe = function(name, emitter) {
+  var index = this.subscriptions[name].indexOf(emitter);
+  if(index > -1) {
+    this.subscriptions[name].splice(index, 1);
+  }
+};
+
+DB.prototype.transactionHandler = function(txInfo) {
+  var tx = bitcore.Transaction().fromBuffer(txInfo.buffer);
+  for(var i = 0; i < this.subscriptions.transaction.length; i++) {
+    this.subscriptions.transaction[i].emit('transaction', {
+      rejected: !txInfo.mempool,
+      tx: tx
+    });
+  }
+};
+
 module.exports = DB;
diff --git a/lib/modules/address.js b/lib/modules/address.js
index caac9cef..c61e6786 100644
--- a/lib/modules/address.js
+++ b/lib/modules/address.js
@@ -18,8 +18,8 @@ var AddressModule = function(options) {
   BaseModule.call(this, options);
 
   this.subscriptions = {};
-  this.subscriptions.transaction = {};
-  this.subscriptions.balance = {};
+  this.subscriptions['address/transaction'] = {};
+  this.subscriptions['address/balance'] = {};
 
   this.db.bitcoind.on('tx', this.transactionHandler.bind(this));
 
@@ -45,16 +45,16 @@ AddressModule.prototype.getAPIMethods = function() {
 AddressModule.prototype.getPublishEvents = function() {
   return [
     {
-      name: 'transaction',
+      name: 'address/transaction',
       scope: this,
-      subscribe: this.subscribe.bind(this, 'transaction'),
-      unsubscribe: this.unsubscribe.bind(this, 'transaction')
+      subscribe: this.subscribe.bind(this, 'address/transaction'),
+      unsubscribe: this.unsubscribe.bind(this, 'address/transaction')
     },
     {
-      name: 'balance',
+      name: 'address/balance',
       scope: this,
-      subscribe: this.subscribe.bind(this, 'balance'),
-      unsubscribe: this.unsubscribe.bind(this, 'balance')
+      subscribe: this.subscribe.bind(this, 'address/balance'),
+      unsubscribe: this.unsubscribe.bind(this, 'address/balance')
     }
   ];
 };
@@ -123,7 +123,6 @@ AddressModule.prototype.transactionHandler = function(txInfo) {
   for (var key in messages) {
     this.transactionEventHandler(messages[key]);
   }
-
 };
 
 AddressModule.prototype.blockHandler = function(block, addOutput, callback) {
@@ -234,24 +233,24 @@ AddressModule.prototype.blockHandler = function(block, addOutput, callback) {
  * @param {Boolean} [obj.rejected] - If the transaction was not accepted in the mempool
  */
 AddressModule.prototype.transactionEventHandler = function(obj) {
-  if(this.subscriptions.transaction[obj.address]) {
-    var emitters = this.subscriptions.transaction[obj.address];
-    for(var k = 0; k < emitters.length; k++) {
-      emitters[k].emit('transaction', obj);
+  if(this.subscriptions['address/transaction'][obj.address]) {
+    var emitters = this.subscriptions['address/transaction'][obj.address];
+    for(var i = 0; i < emitters.length; i++) {
+      emitters[i].emit('address/transaction', obj);
     }
   }
 };
 
 AddressModule.prototype.balanceEventHandler = function(block, address) {
-  if(this.subscriptions.balance[address]) {
-    var emitters = this.subscriptions.balance[address];
+  if(this.subscriptions['address/balance'][address]) {
+    var emitters = this.subscriptions['address/balance'][address];
     this.getBalance(address, true, function(err, balance) {
       if(err) {
         return this.emit(err);
       }
 
       for(var i = 0; i < emitters.length; i++) {
-        emitters[i].emit('balance', address, balance, block);
+        emitters[i].emit('address/balance', address, balance, block);
       }
     });
   }
@@ -338,9 +337,11 @@ AddressModule.prototype.getOutputs = function(addressStr, queryMempool, callback
       address: addressStr,
       txid: key[3],
       outputIndex: Number(key[4]),
+      timestamp: key[2],
       satoshis: Number(value[0]),
       script: value[1],
-      blockHeight: Number(value[2])
+      blockHeight: Number(value[2]),
+      confirmations: self.db.chain.tip.__height - Number(value[2]) + 1
     };
 
     outputs.push(output);
@@ -371,7 +372,32 @@ AddressModule.prototype.getOutputs = function(addressStr, queryMempool, callback
 
 };
 
-AddressModule.prototype.getUnspentOutputs = function(address, queryMempool, callback) {
+AddressModule.prototype.getUnspentOutputs = function(addresses, queryMempool, callback) {
+  var self = this;
+
+  if(!Array.isArray(addresses)) {
+    addresses = [addresses];
+  }
+
+  var utxos = [];
+
+  async.eachSeries(addresses, function(address, next) {
+    self.getUnspentOutputsForAddress(address, queryMempool, function(err, unspents) {
+      if(err && err instanceof errors.NoOutputs) {
+        return next();
+      } else if(err) {
+        return next(err);
+      }
+
+      utxos = utxos.concat(unspents);
+      next();
+    });
+  }, function(err) {
+    callback(err, utxos);
+  });
+};
+
+AddressModule.prototype.getUnspentOutputsForAddress = function(address, queryMempool, callback) {
 
   var self = this;
 
@@ -427,7 +453,30 @@ AddressModule.prototype.getSpendInfoForOutput = function(txid, outputIndex, call
   });
 };
 
-AddressModule.prototype.getAddressHistory = function(address, queryMempool, callback) {
+AddressModule.prototype.getAddressHistory = function(addresses, queryMempool, callback) {
+  var self = this;
+
+  if(!Array.isArray(addresses)) {
+    addresses = [addresses];
+  }
+
+  var history = [];
+
+  async.eachSeries(addresses, function(address, next) {
+    self.getAddressHistoryForAddress(address, queryMempool, function(err, h) {
+      if(err) {
+        return next(err);
+      }
+
+      history = history.concat(h);
+      next();
+    });
+  }, function(err) {
+    callback(err, history);
+  });
+};
+
+AddressModule.prototype.getAddressHistoryForAddress = function(address, queryMempool, callback) {
   var self = this;
 
   var txinfos = {};
@@ -447,13 +496,21 @@ AddressModule.prototype.getAddressHistory = function(address, queryMempool, call
           return callback(err);
         }
 
+        var confirmations = 0;
+        if(transaction.__height >= 0) {
+          confirmations = self.db.chain.tip.__height - transaction.__height;
+        }
+
         txinfos[transaction.hash] = {
+          address: address,
           satoshis: 0,
           height: transaction.__height,
+          confirmations: confirmations,
           timestamp: transaction.__timestamp,
+          fees: transaction.getFee(),
           outputIndexes: [],
           inputIndexes: [],
-          transaction: transaction
+          tx: transaction
         };
 
         callback(null, txinfos[transaction.hash]);
@@ -490,7 +547,7 @@ AddressModule.prototype.getAddressHistory = function(address, queryMempool, call
               }
 
               txinfo.inputIndexes.push(spendInfo.inputIndex);
-              txinfo.satoshis -= txinfo.transaction.inputs[spendInfo.inputIndex].output.satoshis;
+              txinfo.satoshis -= txinfo.tx.inputs[spendInfo.inputIndex].output.satoshis;
               next();
             });
           });
diff --git a/lib/node.js b/lib/node.js
index 48e5f022..a4f6bee7 100644
--- a/lib/node.js
+++ b/lib/node.js
@@ -39,7 +39,7 @@ Node.prototype.getAllAPIMethods = function() {
 };
 
 Node.prototype.getAllPublishEvents = function() {
-  var events = [];
+  var events = this.db.getPublishEvents();
   for (var i = 0; i < this.db.modules.length; i++) {
     var mod = this.db.modules[i];
     events = events.concat(mod.getPublishEvents());
@@ -407,15 +407,6 @@ Node.prototype._initializeDatabase = function() {
 
   // Database
   this.db.on('ready', function() {
-
-    // Add all db option modules
-    var modules = self.db._modules;
-    if(modules && modules.length) {
-      for(var i = 0; i < modules.length; i++) {
-        self.db.addModule(modules[i]);
-      }
-    }
-
     log.info('Bitcoin Database Ready');
     self.chain.initialize();
   });
diff --git a/lib/transaction.js b/lib/transaction.js
index 3ba209b4..39b9537b 100644
--- a/lib/transaction.js
+++ b/lib/transaction.js
@@ -7,6 +7,7 @@ var chainlib = require('chainlib');
 var BaseTransaction = chainlib.Transaction;
 var BaseDatabase = chainlib.DB;
 var levelup = chainlib.deps.levelup;
+var _ = bitcore.deps._;
 
 Transaction.prototype.populateInputs = function(db, poolTransactions, callback) {
   var self = this;
@@ -29,7 +30,7 @@ Transaction.prototype._populateInput = function(db, input, poolTransactions, cal
     return callback(new Error('Input is expected to have prevTxId as a buffer'));
   }
   var txid = input.prevTxId.toString('hex');
-  db.getTransaction(txid, false, function(err, prevTx) {
+  db.getTransaction(txid, true, function(err, prevTx) {
     if(err instanceof levelup.errors.NotFoundError) {
       // Check the pool for transaction
       for(var i = 0; i < poolTransactions.length; i++) {
diff --git a/package.json b/package.json
index fa7abc50..1fb066b8 100644
--- a/package.json
+++ b/package.json
@@ -44,8 +44,8 @@
   "dependencies": {
     "async": "1.3.0",
     "bindings": "^1.2.1",
-    "bitcore": "^0.12.15",
-    "chainlib": "^0.1.1",
+    "bitcore": "^0.13.0",
+    "chainlib": "^0.1.3",
     "errno": "^0.1.2",
     "memdown": "^1.0.0",
     "mkdirp": "0.5.0",
diff --git a/src/libbitcoind.cc b/src/libbitcoind.cc
index 5753eaa8..428e4ae6 100644
--- a/src/libbitcoind.cc
+++ b/src/libbitcoind.cc
@@ -1566,7 +1566,10 @@ NAN_METHOD(GetMempoolOutputs) {
 
             Local<Object> output = NanNew<Object>();
 
-            output->Set(NanNew<String>("script"), NanNew<String>(script.ToString()));
+            output->Set(NanNew<String>("address"), NanNew<String>(psz));
+
+            std::string scriptHex = HexStr(script.begin(), script.end());
+            output->Set(NanNew<String>("script"), NanNew<String>(scriptHex));
 
             uint64_t satoshis = txout.nValue;
             output->Set(NanNew<String>("satoshis"), NanNew<Number>(satoshis)); // can't go above 2 ^ 53 -1
diff --git a/test/bus.unit.js b/test/bus.unit.js
index a0d4f249..44c4c662 100644
--- a/test/bus.unit.js
+++ b/test/bus.unit.js
@@ -7,68 +7,107 @@ var Bus = require('../lib/bus');
 describe('Bus', function() {
 
   describe('#subscribe', function() {
-    it('will call modules subscribe function with the correct arguments', function() {
-      var subscribe = sinon.spy();
+    it('will call db and modules subscribe function with the correct arguments', function() {
+      var subscribeDb = sinon.spy();
+      var subscribeModule = sinon.spy();
       var db = {
+        getPublishEvents: sinon.stub().returns([
+            {
+              name: 'dbtest',
+              scope: this,
+              subscribe: subscribeDb
+            }
+          ]
+        ),
         modules: [
           {
             getPublishEvents: sinon.stub().returns([
               {
                 name: 'test',
                 scope: this,
-                subscribe: subscribe,
+                subscribe: subscribeModule,
               }
             ])
           }
         ]
       };
       var bus = new Bus({db: db});
+      bus.subscribe('dbtest', 'a', 'b', 'c');
       bus.subscribe('test', 'a', 'b', 'c');
-      subscribe.callCount.should.equal(1);
-      subscribe.args[0][0].should.equal(bus);
-      subscribe.args[0][1].should.equal('a');
-      subscribe.args[0][2].should.equal('b');
-      subscribe.args[0][3].should.equal('c');
+      subscribeModule.callCount.should.equal(1);
+      subscribeDb.callCount.should.equal(1);
+      subscribeDb.args[0][0].should.equal(bus);
+      subscribeDb.args[0][1].should.equal('a');
+      subscribeDb.args[0][2].should.equal('b');
+      subscribeDb.args[0][3].should.equal('c');
+      subscribeModule.args[0][0].should.equal(bus);
+      subscribeModule.args[0][1].should.equal('a');
+      subscribeModule.args[0][2].should.equal('b');
+      subscribeModule.args[0][3].should.equal('c');
     });
   });
 
   describe('#unsubscribe', function() {
-    it('will call modules unsubscribe function with the correct arguments', function() {
-      var unsubscribe = sinon.spy();
+    it('will call db and modules unsubscribe function with the correct arguments', function() {
+      var unsubscribeDb = sinon.spy();
+      var unsubscribeModule = sinon.spy();
       var db = {
+        getPublishEvents: sinon.stub().returns([
+            {
+              name: 'dbtest',
+              scope: this,
+              unsubscribe: unsubscribeDb
+            }
+          ]
+        ),
         modules: [
           {
             getPublishEvents: sinon.stub().returns([
               {
                 name: 'test',
                 scope: this,
-                unsubscribe: unsubscribe
+                unsubscribe: unsubscribeModule,
               }
             ])
           }
         ]
       };
       var bus = new Bus({db: db});
+      bus.unsubscribe('dbtest', 'a', 'b', 'c');
       bus.unsubscribe('test', 'a', 'b', 'c');
-      unsubscribe.callCount.should.equal(1);
-      unsubscribe.args[0][0].should.equal(bus);
-      unsubscribe.args[0][1].should.equal('a');
-      unsubscribe.args[0][2].should.equal('b');
-      unsubscribe.args[0][3].should.equal('c');
+      unsubscribeModule.callCount.should.equal(1);
+      unsubscribeDb.callCount.should.equal(1);
+      unsubscribeDb.args[0][0].should.equal(bus);
+      unsubscribeDb.args[0][1].should.equal('a');
+      unsubscribeDb.args[0][2].should.equal('b');
+      unsubscribeDb.args[0][3].should.equal('c');
+      unsubscribeModule.args[0][0].should.equal(bus);
+      unsubscribeModule.args[0][1].should.equal('a');
+      unsubscribeModule.args[0][2].should.equal('b');
+      unsubscribeModule.args[0][3].should.equal('c');
     });
   });
 
   describe('#close', function() {
     it('will unsubscribe from all events', function() {
-      var unsubscribe = sinon.spy();
+      var unsubscribeDb = sinon.spy();
+      var unsubscribeModule = sinon.spy();
       var db = {
+        getPublishEvents: sinon.stub().returns([
+            {
+              name: 'dbtest',
+              scope: this,
+              unsubscribe: unsubscribeDb
+            }
+          ]
+        ),
         modules: [
           {
             getPublishEvents: sinon.stub().returns([
             {
               name: 'test',
               scope: this,
-              unsubscribe: unsubscribe
+              unsubscribe: unsubscribeModule
             }
             ])
           }
@@ -78,9 +117,12 @@ describe('Bus', function() {
       var bus = new Bus({db: db});
       bus.close();
 
-      unsubscribe.callCount.should.equal(1);
-      unsubscribe.args[0].length.should.equal(1);
-      unsubscribe.args[0][0].should.equal(bus);
+      unsubscribeDb.callCount.should.equal(1);
+      unsubscribeModule.callCount.should.equal(1);
+      unsubscribeDb.args[0].length.should.equal(1);
+      unsubscribeDb.args[0][0].should.equal(bus); 
+      unsubscribeModule.args[0].length.should.equal(1);
+      unsubscribeModule.args[0][0].should.equal(bus);
     });
   });
 
diff --git a/test/db.unit.js b/test/db.unit.js
index b1790bdb..e4081a8e 100644
--- a/test/db.unit.js
+++ b/test/db.unit.js
@@ -10,10 +10,25 @@ var errors = bitcoindjs.errors;
 var memdown = require('memdown');
 var inherits = require('util').inherits;
 var BaseModule = require('../lib/module');
+var bitcore = require('bitcore');
+var Transaction = bitcore.Transaction;
 
 describe('Bitcoin DB', function() {
   var coinbaseAmount = 50 * 1e8;
 
+  describe('#initialize', function() {
+    it('should emit ready', function(done) {
+      var db = new DB({store: memdown});
+      db._modules = ['mod1', 'mod2'];
+      db.bitcoind = {
+        on: sinon.spy()
+      };
+      db.addModule = sinon.spy();
+      db.on('ready', done);
+      db.initialize();
+    });
+  });
+
   describe('#getTransaction', function() {
     it('will return a NotFound error', function(done) {
       var db = new DB({store: memdown});
@@ -89,6 +104,112 @@ describe('Bitcoin DB', function() {
     });
   });
 
+  describe('#getPrevHash', function() {
+    it('should return prevHash from bitcoind', function(done) {
+      var db = new DB({store: memdown});
+      db.bitcoind = {
+        getBlockIndex: sinon.stub().returns({
+          prevHash: 'prevhash'
+        })
+      };
+
+      db.getPrevHash('hash', function(err, prevHash) {
+        should.not.exist(err);
+        prevHash.should.equal('prevhash');
+        done();
+      });
+    });
+
+    it('should give an error if bitcoind could not find it', function(done) {
+      var db = new DB({store: memdown});
+      db.bitcoind = {
+        getBlockIndex: sinon.stub().returns(null)
+      };
+
+      db.getPrevHash('hash', function(err, prevHash) {
+        should.exist(err);
+        done();
+      });
+    });
+  });
+
+  describe('#getTransactionWithBlockInfo', function() {
+    it('should give a transaction with height and timestamp', function(done) {
+      var txBuffer = new Buffer('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', 'hex');
+      var info = {
+        height: 530482,
+        timestamp: 1439559434000,
+        buffer: txBuffer
+      };
+
+      var db = new DB({store: memdown});
+      db.bitcoind = {
+        getTransactionWithBlockInfo: sinon.stub().callsArgWith(2, null, info)
+      };
+
+      db.getTransactionWithBlockInfo('2d950d00494caf6bfc5fff2a3f839f0eb50f663ae85ce092bc5f9d45296ae91f', true, function(err, tx) {
+        should.not.exist(err);
+        tx.__height.should.equal(info.height);
+        tx.__timestamp.should.equal(info.timestamp);
+        done();
+      });
+    });
+    it('should give an error if one occurred', function(done) {
+      var db = new DB({store: memdown});
+      db.bitcoind = {
+        getTransactionWithBlockInfo: sinon.stub().callsArgWith(2, new Error('error'))
+      };
+
+      db.getTransactionWithBlockInfo('tx', true, function(err, tx) {
+        should.exist(err);
+        done();
+      });
+    });
+  });
+
+  describe('#sendTransaction', function() {
+    it('should give the txid on success', function(done) {
+      var db = new DB({store: memdown});
+      db.bitcoind = {
+        sendTransaction: sinon.stub().returns('txid')
+      };
+
+      var tx = new Transaction();
+      db.sendTransaction(tx, function(err, txid) {
+        should.not.exist(err);
+        txid.should.equal('txid');
+        done();
+      });
+    });
+    it('should give an error if bitcoind threw an error', function(done) {
+      var db = new DB({store: memdown});
+      db.bitcoind = {
+        sendTransaction: sinon.stub().throws(new Error('error'))
+      };
+
+      var tx = new Transaction();
+      db.sendTransaction(tx, function(err, txid) {
+        should.exist(err);
+        done();
+      });
+    });
+  });
+
+  describe("#estimateFee", function() {
+    it('should pass along the fee from bitcoind', function(done) {
+      var db = new DB({store: memdown});
+      db.bitcoind = {
+        estimateFee: sinon.stub().returns(1000)
+      };
+
+      db.estimateFee(5, function(err, fee) {
+        should.not.exist(err);
+        fee.should.equal(1000);
+        db.bitcoind.estimateFee.args[0][0].should.equal(5);
+        done();
+      });
+    });
+  });
   describe('#buildGenesisData', function() {
     it('build genisis data', function() {
       var db = new DB({path: 'path', store: memdown});
@@ -301,7 +422,7 @@ describe('Bitcoin DB', function() {
       var db = new DB({store: memdown});
       db.modules = [];
       var methods = db.getAPIMethods();
-      methods.length.should.equal(2);
+      methods.length.should.equal(4);
     });
 
     it('should also return modules API methods', function() {
@@ -325,7 +446,7 @@ describe('Bitcoin DB', function() {
       db.modules = [module1, module2];
 
       var methods = db.getAPIMethods();
-      methods.length.should.equal(5);
+      methods.length.should.equal(7);
     });
   });
 
diff --git a/test/modules/address.unit.js b/test/modules/address.unit.js
index ce6ad882..4b8653aa 100644
--- a/test/modules/address.unit.js
+++ b/test/modules/address.unit.js
@@ -2,12 +2,12 @@
 
 var should = require('chai').should();
 var sinon = require('sinon');
-var bitcoindjs = require('../../');
-var AddressModule = bitcoindjs.modules.AddressModule;
+var bitcorenode = require('../../');
+var AddressModule = bitcorenode.modules.AddressModule;
 var blockData = require('../data/livenet-345003.json');
 var bitcore = require('bitcore');
 var EventEmitter = require('events').EventEmitter;
-var errors = bitcoindjs.errors;
+var errors = bitcorenode.errors;
 var chainlib = require('chainlib');
 var levelup = chainlib.deps.levelup;
 
@@ -257,7 +257,7 @@ describe('AddressModule', function() {
     it('will emit a transaction if there is a subscriber', function(done) {
       var am = new AddressModule({db: mockdb});
       var emitter = new EventEmitter();
-      am.subscriptions.transaction = {
+      am.subscriptions['address/transaction'] = {
         '1DzjESe6SLmAKVPLFMj6Sx1sWki3qt5i8N': [emitter]
       };
       var block = {
@@ -265,7 +265,7 @@ describe('AddressModule', function() {
         timestamp: new Date()
       };
       var tx = {};
-      emitter.on('transaction', function(obj) {
+      emitter.on('address/transaction', function(obj) {
         obj.address.should.equal('1DzjESe6SLmAKVPLFMj6Sx1sWki3qt5i8N');
         obj.tx.should.equal(tx);
         obj.timestamp.should.equal(block.timestamp);
@@ -287,13 +287,13 @@ describe('AddressModule', function() {
     it('will emit a balance if there is a subscriber', function(done) {
       var am = new AddressModule({db: mockdb});
       var emitter = new EventEmitter();
-      am.subscriptions.balance = {
+      am.subscriptions['address/balance'] = {
         '1DzjESe6SLmAKVPLFMj6Sx1sWki3qt5i8N': [emitter]
       };
       var block = {};
       var balance = 1000;
       am.getBalance = sinon.stub().callsArgWith(2, null, balance);
-      emitter.on('balance', function(address, bal, b) {
+      emitter.on('address/balance', function(address, bal, b) {
         address.should.equal('1DzjESe6SLmAKVPLFMj6Sx1sWki3qt5i8N');
         bal.should.equal(balance);
         b.should.equal(block);
@@ -309,33 +309,33 @@ describe('AddressModule', function() {
       var emitter = new EventEmitter();
 
       var address = '1DzjESe6SLmAKVPLFMj6Sx1sWki3qt5i8N';
-      var name = 'transaction';
+      var name = 'address/transaction';
       am.subscribe(name, emitter, [address]);
-      am.subscriptions.transaction[address].should.deep.equal([emitter]);
+      am.subscriptions['address/transaction'][address].should.deep.equal([emitter]);
 
       var address2 = '1KiW1A4dx1oRgLHtDtBjcunUGkYtFgZ1W';
       am.subscribe(name, emitter, [address2]);
-      am.subscriptions.transaction[address2].should.deep.equal([emitter]);
+      am.subscriptions['address/transaction'][address2].should.deep.equal([emitter]);
 
       var emitter2 = new EventEmitter();
       am.subscribe(name, emitter2, [address]);
-      am.subscriptions.transaction[address].should.deep.equal([emitter, emitter2]);
+      am.subscriptions['address/transaction'][address].should.deep.equal([emitter, emitter2]);
     });
     it('will add an emitter to the subscribers array (balance)', function() {
       var am = new AddressModule({db: mockdb});
       var emitter = new EventEmitter();
-      var name = 'balance';
+      var name = 'address/balance';
       var address = '1DzjESe6SLmAKVPLFMj6Sx1sWki3qt5i8N';
       am.subscribe(name, emitter, [address]);
-      am.subscriptions.balance[address].should.deep.equal([emitter]);
+      am.subscriptions['address/balance'][address].should.deep.equal([emitter]);
 
       var address2 = '1KiW1A4dx1oRgLHtDtBjcunUGkYtFgZ1W';
       am.subscribe(name, emitter, [address2]);
-      am.subscriptions.balance[address2].should.deep.equal([emitter]);
+      am.subscriptions['address/balance'][address2].should.deep.equal([emitter]);
 
       var emitter2 = new EventEmitter();
       am.subscribe(name, emitter2, [address]);
-      am.subscriptions.balance[address].should.deep.equal([emitter, emitter2]);
+      am.subscriptions['address/balance'][address].should.deep.equal([emitter, emitter2]);
     });
   });
 
@@ -345,31 +345,31 @@ describe('AddressModule', function() {
       var emitter = new EventEmitter();
       var emitter2 = new EventEmitter();
       var address = '1DzjESe6SLmAKVPLFMj6Sx1sWki3qt5i8N';
-      am.subscriptions.transaction[address] = [emitter, emitter2];
-      var name = 'transaction';
+      am.subscriptions['address/transaction'][address] = [emitter, emitter2];
+      var name = 'address/transaction';
       am.unsubscribe(name, emitter, [address]);
-      am.subscriptions.transaction[address].should.deep.equal([emitter2]);
+      am.subscriptions['address/transaction'][address].should.deep.equal([emitter2]);
     });
     it('will remove emitter from subscribers array (balance)', function() {
       var am = new AddressModule({db: mockdb});
       var emitter = new EventEmitter();
       var emitter2 = new EventEmitter();
       var address = '1DzjESe6SLmAKVPLFMj6Sx1sWki3qt5i8N';
-      var name = 'balance';
-      am.subscriptions.balance[address] = [emitter, emitter2];
+      var name = 'address/balance';
+      am.subscriptions['address/balance'][address] = [emitter, emitter2];
       am.unsubscribe(name, emitter, [address]);
-      am.subscriptions.balance[address].should.deep.equal([emitter2]);
+      am.subscriptions['address/balance'][address].should.deep.equal([emitter2]);
     });
     it('should unsubscribe from all addresses if no addresses are specified', function() {
       var am = new AddressModule({db: mockdb});
       var emitter = new EventEmitter();
       var emitter2 = new EventEmitter();
-      am.subscriptions.balance = {
+      am.subscriptions['address/balance'] = {
         '1KiW1A4dx1oRgLHtDtBjcunUGkYtFgZ1W': [emitter, emitter2],
         '1DzjESe6SLmAKVPLFMj6Sx1sWki3qt5i8N': [emitter2, emitter]
       };
-      am.unsubscribe('balance', emitter);
-      am.subscriptions.balance.should.deep.equal({
+      am.unsubscribe('address/balance', emitter);
+      am.subscriptions['address/balance'].should.deep.equal({
         '1KiW1A4dx1oRgLHtDtBjcunUGkYtFgZ1W': [emitter2],
         '1DzjESe6SLmAKVPLFMj6Sx1sWki3qt5i8N': [emitter2]
       });
@@ -408,6 +408,11 @@ describe('AddressModule', function() {
     var db = {
       bitcoind: {
         on: sinon.stub()
+      },
+      chain: {
+        tip: {
+          __height: 1
+        }
       }
     };
 
@@ -490,6 +495,94 @@ describe('AddressModule', function() {
   });
 
   describe('#getUnspentOutputs', function() {
+    it('should concatenate utxos for multiple addresses, even those with none found', function(done) {
+      var addresses = {
+        'addr1': ['utxo1', 'utxo2'],
+        'addr2': new errors.NoOutputs(),
+        'addr3': ['utxo3']
+      };
+
+      var db = {
+        bitcoind: {
+          on: sinon.spy()
+        }
+      };
+      var am = new AddressModule({db: db});
+      am.getUnspentOutputsForAddress = function(address, queryMempool, callback) {
+        var result = addresses[address];
+        if(result instanceof Error) {
+          return callback(result);
+        } else {
+          return callback(null, result);
+        }
+      };
+
+      am.getUnspentOutputs(['addr1', 'addr2', 'addr3'], true, function(err, utxos) {
+        should.not.exist(err);
+        utxos.should.deep.equal(['utxo1', 'utxo2', 'utxo3']);
+        done();
+      });
+    });
+    it('should give an error if an error occurred', function(done) {
+      var addresses = {
+        'addr1': ['utxo1', 'utxo2'],
+        'addr2': new Error('weird error'),
+        'addr3': ['utxo3']
+      };
+
+      var db = {
+        bitcoind: {
+          on: sinon.spy()
+        }
+      };
+      var am = new AddressModule({db: db});
+      am.getUnspentOutputsForAddress = function(address, queryMempool, callback) {
+        var result = addresses[address];
+        if(result instanceof Error) {
+          return callback(result);
+        } else {
+          return callback(null, result);
+        }
+      };
+
+      am.getUnspentOutputs(['addr1', 'addr2', 'addr3'], true, function(err, utxos) {
+        should.exist(err);
+        err.message.should.equal('weird error');
+        done();
+      });
+    });
+
+    it('should also work for a single address', function(done) {
+      var addresses = {
+        'addr1': ['utxo1', 'utxo2'],
+        'addr2': new Error('weird error'),
+        'addr3': ['utxo3']
+      };
+
+      var db = {
+        bitcoind: {
+          on: sinon.spy()
+        }
+      };
+      var am = new AddressModule({db: db});
+      am.getUnspentOutputsForAddress = function(address, queryMempool, callback) {
+        var result = addresses[address];
+        if(result instanceof Error) {
+          return callback(result);
+        } else {
+          return callback(null, result);
+        }
+      };
+
+      am.getUnspentOutputs('addr1', true, function(err, utxos) {
+        should.not.exist(err);
+        utxos.should.deep.equal(['utxo1', 'utxo2']);
+        done();
+      });
+    });
+  });
+
+  describe('#getUnspentOutputsForAddress', function() {
     it('should filter out spent outputs', function(done) {
       var outputs = [
         {
@@ -514,7 +607,7 @@ describe('AddressModule', function() {
         i++;
       };
 
-      am.getUnspentOutputs('1KiW1A4dx1oRgLHtDtBjcunUGkYtFgZ1W', false, function(err, outputs) {
+      am.getUnspentOutputsForAddress('1KiW1A4dx1oRgLHtDtBjcunUGkYtFgZ1W', false, function(err, outputs) {
         should.not.exist(err);
         outputs.length.should.equal(2);
         outputs[0].satoshis.should.equal(1000);
@@ -525,7 +618,7 @@ describe('AddressModule', function() {
     it('should handle an error from getOutputs', function(done) {
       var am = new AddressModule({db: mockdb});
       am.getOutputs = sinon.stub().callsArgWith(2, new Error('error'));
-      am.getUnspentOutputs('1KiW1A4dx1oRgLHtDtBjcunUGkYtFgZ1W', false, function(err, outputs) {
+      am.getUnspentOutputsForAddress('1KiW1A4dx1oRgLHtDtBjcunUGkYtFgZ1W', false, function(err, outputs) {
         should.exist(err);
         err.message.should.equal('error');
         done();
@@ -534,7 +627,7 @@ describe('AddressModule', function() {
     it('should handle when there are no outputs', function(done) {
       var am = new AddressModule({db: mockdb});
       am.getOutputs = sinon.stub().callsArgWith(2, null, []);
-      am.getUnspentOutputs('1KiW1A4dx1oRgLHtDtBjcunUGkYtFgZ1W', false, function(err, outputs) {
+      am.getUnspentOutputsForAddress('1KiW1A4dx1oRgLHtDtBjcunUGkYtFgZ1W', false, function(err, outputs) {
         should.exist(err);
         err.should.be.instanceof(errors.NoOutputs);
         outputs.length.should.equal(0);
@@ -628,14 +721,16 @@ describe('AddressModule', function() {
         inputIndex: 0,
         height: 1,
         timestamp: 1438289011844,
-        satoshis: 5000
+        satoshis: 5000,
+        getFee: sinon.stub().returns(1000)
       },
       {
         txid: 'tx3',
         outputIndex: 1,
         height: 3,
         timestamp: 1438289031844,
-        satoshis: 2000
+        satoshis: 2000,
+        getFee: sinon.stub().returns(1000)
       },
       {
         txid: 'tx4',
@@ -644,7 +739,8 @@ describe('AddressModule', function() {
         inputIndex: 1,
         height: 4,
         timestamp: 1438289041844,
-        satoshis: 3000
+        satoshis: 3000,
+        getFee: sinon.stub().returns(1000)
       },
     ];
 
@@ -659,7 +755,8 @@ describe('AddressModule', function() {
               satoshis: 5000
             }
           }
-        ]
+        ],
+        getFee: sinon.stub().returns(1000)
       },
       {
         txid: 'tx5',
@@ -672,7 +769,8 @@ describe('AddressModule', function() {
               satoshis: 3000
             }
           }
-        ]
+        ],
+        getFee: sinon.stub().returns(1000)
       }
     ];
 
@@ -689,6 +787,7 @@ describe('AddressModule', function() {
             transaction.hash = txid;
             transaction.__height = incoming[i].height;
             transaction.__timestamp = incoming[i].timestamp;
+            transaction.getFee = incoming[i].getFee;
             return callback(null, transaction);
           }
         }
@@ -702,6 +801,7 @@ describe('AddressModule', function() {
             transaction.__height = outgoing[i].height;
             transaction.__timestamp = outgoing[i].timestamp;
             transaction.inputs = outgoing[i].inputs;
+            transaction.getFee = outgoing[i].getFee;
             return callback(null, transaction);
           }
         }
@@ -709,6 +809,11 @@ describe('AddressModule', function() {
       },
       bitcoind: {
         on: sinon.stub()
+      },
+      chain: {
+        tip: {
+          __height: 1
+        }
       }
     };
     var am = new AddressModule({db: db});
@@ -733,26 +838,31 @@ describe('AddressModule', function() {
     it('should give transaction history for an address', function(done) {
       am.getAddressHistory('address', true, function(err, history) {
         should.not.exist(err);
-        history[0].transaction.hash.should.equal('tx1');
+        history[0].tx.hash.should.equal('tx1');
         history[0].satoshis.should.equal(5000);
         history[0].height.should.equal(1);
         history[0].timestamp.should.equal(1438289011844);
-        history[1].transaction.hash.should.equal('tx2');
+        history[0].fees.should.equal(1000);
+        history[1].tx.hash.should.equal('tx2');
         history[1].satoshis.should.equal(-5000);
         history[1].height.should.equal(2);
         history[1].timestamp.should.equal(1438289021844);
-        history[2].transaction.hash.should.equal('tx3');
+        history[1].fees.should.equal(1000);
+        history[2].tx.hash.should.equal('tx3');
         history[2].satoshis.should.equal(2000);
         history[2].height.should.equal(3);
         history[2].timestamp.should.equal(1438289031844);
-        history[3].transaction.hash.should.equal('tx4');
+        history[2].fees.should.equal(1000);
+        history[3].tx.hash.should.equal('tx4');
         history[3].satoshis.should.equal(3000);
         history[3].height.should.equal(4);
         history[3].timestamp.should.equal(1438289041844);
-        history[4].transaction.hash.should.equal('tx5');
+        history[3].fees.should.equal(1000);
+        history[4].tx.hash.should.equal('tx5');
         history[4].satoshis.should.equal(-3000);
         history[4].height.should.equal(5);
         history[4].timestamp.should.equal(1438289051844);
+        history[4].fees.should.equal(1000);
         done();
       });
     });
diff --git a/test/node.unit.js b/test/node.unit.js
index b6de7661..674f3ed4 100644
--- a/test/node.unit.js
+++ b/test/node.unit.js
@@ -71,6 +71,7 @@ describe('Bitcoind Node', function() {
     it('should return modules publish events', function() {
       var node = new Node({});
       var db = {
+        getPublishEvents: sinon.stub().returns(['db1', 'db2']),
         modules: [
           {
             getPublishEvents: sinon.stub().returns(['mda1', 'mda2'])
@@ -83,7 +84,7 @@ describe('Bitcoind Node', function() {
       node.db = db;
 
       var events = node.getAllPublishEvents();
-      events.should.deep.equal(['mda1', 'mda2', 'mdb1', 'mdb2']);
+      events.should.deep.equal(['db1', 'db2', 'mda1', 'mda2', 'mdb1', 'mdb2']);
     });
   });
   describe('#_loadConfiguration', function() {
@@ -462,7 +463,6 @@ describe('Bitcoind Node', function() {
         setImmediate(function() {
           chainlib.log.info.callCount.should.equal(1);
           chainlib.log.info.restore();
-          node.db.addModule.callCount.should.equal(1);
           node.chain.initialize.callCount.should.equal(1);
           done();
         });