diff --git a/lib/bcoin/block.js b/lib/bcoin/block.js
index 6cfcba50..41635262 100644
--- a/lib/bcoin/block.js
+++ b/lib/bcoin/block.js
@@ -711,7 +711,7 @@ Block.prototype.fromRaw = function fromRaw(data) {
   for (i = 0; i < this.totalTX; i++) {
     tx = bcoin.tx.fromRaw(p);
     this._witnessSize += tx._witnessSize;
-    this.txs.push(tx);
+    this.addTX(tx);
   }
 
   this._raw = p.endData();
diff --git a/lib/bcoin/chaindb.js b/lib/bcoin/chaindb.js
index a80163ca..a2107c1e 100644
--- a/lib/bcoin/chaindb.js
+++ b/lib/bcoin/chaindb.js
@@ -1192,8 +1192,6 @@ ChainDB.prototype.getCoinsByAddress = function getCoinsByAddress(addresses, call
   if (!Array.isArray(addresses))
     addresses = [addresses];
 
-  addresses = utils.uniq(addresses);
-
   utils.forEachSerial(addresses, function(address, next) {
     address = bcoin.address.getHash(address);
 
@@ -1242,8 +1240,6 @@ ChainDB.prototype.getTXByAddress = function getTXByAddress(addresses, callback)
   if (!Array.isArray(addresses))
     addresses = [addresses];
 
-  addresses = utils.uniq(addresses);
-
   utils.forEachSerial(addresses, function(address, next) {
     address = bcoin.address.getHash(address);
 
diff --git a/lib/bcoin/input.js b/lib/bcoin/input.js
index 9732855d..3cc9fcf9 100644
--- a/lib/bcoin/input.js
+++ b/lib/bcoin/input.js
@@ -471,13 +471,10 @@ Input.prototype.toExtended = function toExtended(writer) {
  */
 
 Input.prototype.fromExtended = function fromExtended(data) {
-  var input, p;
-
-  p = bcoin.reader(data);
+  var p = bcoin.reader(data);
   this.fromRaw(p);
   this.witness = bcoin.witness.fromRaw(p);
-
-  return input;
+  return this;
 };
 
 /**
diff --git a/lib/bcoin/mempool.js b/lib/bcoin/mempool.js
index be55b251..90433a48 100644
--- a/lib/bcoin/mempool.js
+++ b/lib/bcoin/mempool.js
@@ -471,8 +471,6 @@ Mempool.prototype.getCoinsByAddress = function getCoinsByAddress(addresses, call
   if (!Array.isArray(addresses))
     addresses = [addresses];
 
-  addresses = utils.uniq(addresses);
-
   utils.forEachSerial(addresses, function(address, next) {
     address = bcoin.address.getHash(address, 'hex');
 
@@ -515,8 +513,6 @@ Mempool.prototype.getTXByAddress = function getTXByAddress(addresses, callback)
   if (!Array.isArray(addresses))
     addresses = [addresses];
 
-  addresses = utils.uniq(addresses);
-
   utils.forEachSerial(addresses, function(address, next) {
     address = bcoin.address.getHash(address, 'hex');
 
diff --git a/lib/bcoin/tx.js b/lib/bcoin/tx.js
index 123fda52..9ca15cf2 100644
--- a/lib/bcoin/tx.js
+++ b/lib/bcoin/tx.js
@@ -1880,6 +1880,8 @@ TX.prototype.toJSON = function toJSON() {
  */
 
 TX.prototype.fromJSON = function fromJSON(json) {
+  var i, input, output;
+
   assert.equal(json.type, 'tx');
 
   this.block = json.block ? utils.revHex(json.block) : null;
@@ -1887,19 +1889,21 @@ TX.prototype.fromJSON = function fromJSON(json) {
   this.ts = json.ts;
   this.ps = json.ps;
   this.index = json.index;
-  this.changeIndex = json.changeIndex || -1;
+  this.changeIndex = json.changeIndex != null ? json.changeIndex : -1;
 
   this.version = json.version;
 
   this.flag = json.flag;
 
-  this.inputs = json.inputs.map(function(input) {
-    return bcoin.input.fromJSON(input);
-  }),
+  for (i = 0; i < json.inputs.length; i++) {
+    input = json.inputs[i];
+    this.inputs.push(bcoin.input.fromJSON(input));
+  }
 
-  this.outputs = json.outputs.map(function(output) {
-    return bcoin.output.fromJSON(output);
-  }),
+  for (i = 0; i < json.outputs.length; i++) {
+    output = json.outputs[i];
+    this.outputs.push(bcoin.output.fromJSON(output));
+  }
 
   this.locktime = json.locktime;
 
@@ -2092,7 +2096,7 @@ TX.prototype.frameWitness = function frameWitness(writer) {
 
   p.write32(this.version);
   p.writeU8(0);
-  p.writeU8(this.flag || 1);
+  p.writeU8(this.flag);
 
   p.writeVarint(this.inputs.length);