diff --git a/lib/bcoin/http/rpc.js b/lib/bcoin/http/rpc.js
index fdcd5f0e..a9c4e646 100644
--- a/lib/bcoin/http/rpc.js
+++ b/lib/bcoin/http/rpc.js
@@ -9,6 +9,7 @@
 var bcoin = require('../env');
 var utils = require('../utils');
 var IP = require('../ip');
+var assert = utils.assert;
 var constants = bcoin.protocol.constants;
 
 function RPC(node) {
@@ -2407,7 +2408,6 @@ RPC.prototype.getreceivedbyaddress = function getreceivedbyaddress(args, callbac
 };
 
 RPC.prototype._toWalletTX = function _toWalletTX(tx, callback) {
-  var self = this;
   var receive, member, json;
 
   this.walletdb.tx.getMap(tx, function(err, map) {
@@ -2448,6 +2448,7 @@ RPC.prototype._toWalletTX = function _toWalletTX(tx, callback) {
 };
 
 RPC.prototype.gettransaction = function gettransaction(args, callback) {
+  var self = this;
   var hash;
 
   if (args.help || args.length < 1 || args.length > 2)
@@ -2604,11 +2605,59 @@ RPC.prototype.listreceivedbyaddress = function listreceivedbyaddress(args, callb
 };
 
 RPC.prototype.listsinceblock = function listsinceblock(args, callback) {
-  callback(new Error('Not implemented.'));
+  var self = this;
+  var block, conf, out;
+
+  if (args.help) {
+    return callback(new Error('listsinceblock'
+      + ' ( "blockhash" target-confirmations includeWatchonly)'));
+  }
+
+  if (args.length > 0) {
+    block = String(args[0]);
+    if (!utils.isHex(block) || block.length !== 64)
+      return callback(new Error('Invalid parameter.'));
+    block = utils.revHex(block);
+  }
+
+  if (args.length > 1) {
+    conf = Number(args[1]);
+    if (!utils.isNumber(conf) || conf < 0)
+      return callback(new Error('Invalid parameter.'));
+  }
+
+  out = [];
+
+  this.chain.db.getHeight(block, function(err, height) {
+    if (err)
+      return callback(err);
+
+    if (height === -1)
+      height = self.chain.height;
+
+    self.wallet.getHistory(function(err, txs) {
+      if (err)
+        return callback(err);
+
+      utils.forEachSerial(txs, function(tx, next, i) {
+        if (tx.height < height)
+          return next();
+        self._toListTX(tx, function(err, json) {
+          if (err)
+            return next(err);
+          out.push(json);
+          next();
+        });
+      }, function(err) {
+        if (err)
+          return callback(err);
+        callback(null, out);
+      });
+    });
+  });
 };
 
 RPC.prototype._toListTX = function _toListTX(tx, callback) {
-  var self = this;
   var receive, member, json;
 
   this.walletdb.tx.getMap(tx, function(err, map) {
@@ -2645,6 +2694,7 @@ RPC.prototype._toListTX = function _toListTX(tx, callback) {
 };
 
 RPC.prototype.listtransactions = function listtransactions(args, callback) {
+  var self = this;
   var account, count;
 
   if (args.help || args.length > 4) {
@@ -2700,8 +2750,6 @@ RPC.prototype.move = function move(args, callback) {
 };
 
 RPC.prototype._send = function _send(account, address, amount, subtractFee, callback) {
-  var self = this;
-
   var options = {
     account: account,
     subtractFee: subtractFee,
diff --git a/lib/bcoin/wallet.js b/lib/bcoin/wallet.js
index b07f3f28..23089273 100644
--- a/lib/bcoin/wallet.js
+++ b/lib/bcoin/wallet.js
@@ -1037,7 +1037,6 @@ Wallet.prototype.getOutputPaths = function getOutputPaths(tx, callback) {
 
 Wallet.prototype.syncOutputDepth = function syncOutputDepth(map, callback) {
   var self = this;
-  var accounts = {};
   var change = [];
   var receive = [];
   var i, path, unlock;