From 7175f81d59aa653b2430f4ceb2bc80d5ab312c9c Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Sun, 14 Feb 2016 18:05:21 -0800
Subject: [PATCH] fullnode

---
 bin/node                     |  13 +
 lib/bcoin.js                 |   2 +
 lib/bcoin/blockdb.js         | 897 +++++++++++++++++++++++++++++++++++
 lib/bcoin/coin.js            |   4 +
 lib/bcoin/input.js           |   2 +
 lib/bcoin/mempool.js         | 202 ++++++--
 lib/bcoin/node.js            | 218 +++++++++
 lib/bcoin/output.js          |   2 +
 lib/bcoin/protocol/parser.js |  16 +-
 lib/bcoin/tx.js              |  56 ++-
 10 files changed, 1353 insertions(+), 59 deletions(-)
 create mode 100755 bin/node
 create mode 100644 lib/bcoin/blockdb.js
 create mode 100644 lib/bcoin/node.js

diff --git a/bin/node b/bin/node
new file mode 100755
index 00000000..c887d6d8
--- /dev/null
+++ b/bin/node
@@ -0,0 +1,13 @@
+#!/usr/bin/env node
+
+var bcoin = require('bcoin');
+var utils = bcoin.utils;
+var assert = utils.assert;
+
+var node = bcoin.node({
+  debug: true
+});
+
+node.on('error', function(err) {
+  utils.print(err.message);
+});
diff --git a/lib/bcoin.js b/lib/bcoin.js
index 0f5f2b02..7bd96408 100644
--- a/lib/bcoin.js
+++ b/lib/bcoin.js
@@ -53,6 +53,8 @@ bcoin.tx = require('./bcoin/tx');
 bcoin.txPool = require('./bcoin/tx-pool');
 bcoin.block = require('./bcoin/block');
 bcoin.ramdisk = require('./bcoin/ramdisk');
+bcoin.blockdb = require('./bcoin/blockdb');
+bcoin.node = require('./bcoin/node');
 bcoin.chainblock = require('./bcoin/chainblock');
 bcoin.chaindb = require('./bcoin/chaindb');
 bcoin.chain = require('./bcoin/chain');
diff --git a/lib/bcoin/blockdb.js b/lib/bcoin/blockdb.js
new file mode 100644
index 00000000..007c75c8
--- /dev/null
+++ b/lib/bcoin/blockdb.js
@@ -0,0 +1,897 @@
+/**
+ * db.js - db object for bcoin
+ * Copyright (c) 2014-2015, Fedor Indutny (MIT License)
+ * https://github.com/indutny/bcoin
+ */
+
+var bcoin = require('../bcoin');
+var utils = bcoin.utils;
+var assert = utils.assert;
+var levelup = require('levelup');
+var inherits = require('inherits');
+var EventEmitter = require('events').EventEmitter;
+var network = bcoin.protocol.network;
+var fs = bcoin.fs;
+
+/**
+ * BlockDB
+ */
+
+function BlockDB(options) {
+  var self = this;
+
+  if (!(this instanceof BlockDB))
+    return new BlockDB(options);
+
+  EventEmitter.call(this);
+
+  if (!options)
+    options = {};
+
+  if (typeof options === 'string')
+    options = { file: options };
+
+  if (!options.file)
+    options.file = process.env.HOME + '/bcoin-server-' + network.type + '.ldb';
+
+  this.options = options;
+  this.data = new BlockData();
+  this.index = levelup(options.file, {
+    keyEncoding: 'ascii',
+    valueEncoding: 'binary',
+    cacheSize: 16 * 1024 * 1024
+  });
+}
+
+inherits(BlockDB, EventEmitter);
+
+BlockDB.prototype.get = function get(key, options, callback) {
+  return this.index.get(key, options, callback);
+};
+
+BlockDB.prototype.put = function put(key, value, options, callback) {
+  return this.index.put(key, value, options, callback);
+};
+
+BlockDB.prototype.del = function del(key, options, callback) {
+  return this.index.del(key, options, callback);
+};
+
+BlockDB.prototype.batch = function batch() {
+  return this.index.batch();
+};
+
+BlockDB.prototype.createOffset = function createOffset(size, offset, height) {
+  var buf = new Buffer(16);
+  utils.writeU32(buf, size, 0);
+  utils.writeU64(buf, offset, 4);
+  utils.writeU32(buf, height, 12);
+  return buf;
+};
+
+BlockDB.prototype.parseOffset = function parseOffset(data, height) {
+  return {
+    size: utils.readU32(data, 0),
+    offset: utils.readU64(data, 4).toNumber(),
+    height: utils.readU32(data, 12)
+  };
+};
+
+BlockDB.prototype.saveBlock = function saveBlock(block, callback) {
+  var self = this;
+  var batch = this.index.batch();
+
+  this.data.saveAsync(block._raw, function(err, data) {
+    if (err)
+      return callback(err);
+
+    var blockOffset = self.createOffset(data.size, data.offset, block.height);
+
+    var batch = self.index.batch();
+    batch.put('b/b/' + block.hash('hex'), blockOffset);
+    batch.put('b/h/' + block.height, blockOffset);
+
+    block.txs.forEach(function(tx, i) {
+      var txOffset = self.createOffset(tx._size, data.offset + tx._offset, block.height);
+      var hash = tx.hash('hex');
+      var uniq = {};
+
+      batch.put('t/t/' + hash, txOffset);
+
+      tx.inputs.forEach(function(input) {
+        var type = input.getType();
+        var address = input.getAddress();
+        var uaddr;
+
+        if (type === 'pubkey' || type === 'multisig')
+          address = null;
+
+        uaddr = address;
+
+        if (uaddr) {
+          if (!uniq[uaddr])
+            uniq[uaddr] = true;
+          else
+            uaddr = null;
+        }
+
+        if (uaddr)
+          batch.put('t/a/' + uaddr + '/' + hash, txOffset);
+
+        if (address)
+          batch.del('u/a/' + address + '/' + input.prevout.hash + '/' + input.prevout.index);
+
+        batch.del('u/t/' + input.prevout.hash + '/' + input.prevout.index);
+      });
+
+      tx.outputs.forEach(function(output) {
+        var type = output.getType();
+        var address = output.getAddress();
+        var uaddr;
+
+        if (type === 'pubkey' || type === 'multisig')
+          address = null;
+
+        uaddr = address;
+
+        if (uaddr) {
+          if (!uniq[uaddr])
+            uniq[uaddr] = true;
+          else
+            uaddr = null;
+        }
+
+        var coinOffset = self.createOffset(
+          output._size,
+          data.offset + tx._offset + output._offset,
+          block.height);
+        // console.log(self.parseOffset(coinOffset));
+
+        if (uaddr)
+          batch.put('t/a/' + uaddr + '/' + hash, txOffset);
+
+        if (address)
+          batch.put('u/a/' + address + '/' + hash + '/' + i, coinOffset);
+
+        batch.put('u/t/' + hash + '/' + i, coinOffset);
+      });
+    });
+
+    batch.write(callback);
+  });
+};
+
+BlockDB.prototype.removeBlock = function removeBlock(hash, callback) {
+  var self = this;
+
+  this.getBlock(hash, function(err, block) {
+    var batch, pending;
+
+    if (err)
+      return callback(err);
+
+    if (!block)
+      return callback();
+
+    pending = block.txs.length;
+
+    batch = self.index.batch();
+
+    batch.del('b/b/' + hash);
+    batch.del('b/h/' + block.height);
+
+    function done() {
+      batch.write(function(err) {
+        if (err)
+          return callback(err);
+        return callback(null, block);
+      });
+    }
+
+    if (!pending)
+      return done();
+
+    block.txs.forEach(function(tx, i) {
+      var hash = tx.hash('hex');
+      var uniq = {};
+
+      batch.del('t/t/' + hash);
+
+      self.fillTX2(tx, function(err) {
+        if (err)
+          return callback(err);
+
+        tx.inputs.forEach(function(input) {
+          var type = input.getType();
+          var address = input.getAddress();
+          var uaddr;
+
+          if (type === 'pubkey' || type === 'multisig')
+            address = null;
+
+          uaddr = address;
+
+          if (uaddr) {
+            if (!uniq[uaddr])
+              uniq[uaddr] = true;
+            else
+              uaddr = null;
+          }
+
+          if (uaddr)
+            batch.del('t/a/' + uaddr + '/' + hash);
+
+          var coinOffset = self.createOffset(
+            input.output._size,
+            block._fileOffset + tx._offset + input.output._offset,
+            block.height);
+
+          if (address)
+            batch.put('u/a/' + address + '/' + input.output.hash + '/' + input.output.index, coinOffset);
+
+          batch.put('u/t/' + input.output.hash + '/' + input.output.index, coinOffset);
+        });
+
+        tx.outputs.forEach(function(output) {
+          var type = output.getType();
+          var address = output.getAddress();
+          var uaddr;
+
+          if (type === 'pubkey' || type === 'multisig')
+            address = null;
+
+          uaddr = address;
+
+          if (uaddr) {
+            if (!uniq[uaddr])
+              uniq[uaddr] = true;
+            else
+              uaddr = null;
+          }
+
+          if (uaddr)
+            batch.del('t/a/' + uaddr + '/' + hash);
+
+          if (address)
+            batch.del('u/a/' + address + '/' + hash + '/' + i);
+
+          batch.del('u/t/' + hash + '/' + i);
+        });
+
+        if (!--pending)
+          done();
+      });
+    });
+  });
+};
+
+BlockDB.prototype.fillTX = function fillTX(tx, callback) {
+  var self = this;
+  var pending = tx.inputs.length;
+
+  tx.inputs.forEach(function(input) {
+    if (input.output) {
+      if (!--pending)
+        callback(null, tx);
+      return;
+    }
+    self.getCoin(input.prevout.hash, input.prevout.index, function(err, coin) {
+      if (err)
+        return callback(err);
+
+      if (coin)
+        input.output = coin;
+
+      if (!--pending)
+        callback(null, tx);
+    });
+  });
+};
+
+BlockDB.prototype.fillTX2 = function fillTX2(tx, callback) {
+  var self = this;
+  var pending = tx.inputs.length;
+
+  tx.inputs.forEach(function(input) {
+    if (input.output) {
+      if (!--pending)
+        callback(null, tx);
+      return;
+    }
+    self.getTX(input.prevout.hash, function(err, tx) {
+      if (err)
+        return callback(err);
+
+      if (tx)
+        input.output = bcoin.coin(tx, input.prevout.index);
+
+      if (!--pending)
+        callback(null, tx);
+    });
+  });
+};
+
+BlockDB.prototype.getCoinsByAddress = function getCoinsByAddress(addresses, callback) {
+  var self = this;
+  var coins = [];
+  var pending;
+
+  if (typeof addresses === 'string')
+    addresses = [addresses];
+
+  addresses = utils.uniqs(addresses);
+
+  var pending = addresses.length;
+
+  addresses.forEach(function(address) {
+    self._getCoinsByAddress(address, function(err, coin) {
+      if (err)
+        return callback(err);
+
+      if (coin)
+        coins = coins.concat(coin);
+
+      if (!--pending)
+        return callback(null, coins);
+    });
+  });
+};
+
+BlockDB.prototype._getCoinsByAddress = function _getCoinsByAddress(address, callback) {
+  var self = this;
+  var pending = 0;
+  var coins = [];
+  var done = false;
+
+  callback = utils.asyncify(callback);
+
+  var stream = this.index.createReadStream({
+    start: 'u/a/' + address,
+    end: 'u/a/' + address + '~'
+  });
+
+  stream.on('data', function(data) {
+    var parts = data.key.split('/').slice(3);
+    var hash = parts[0];
+    var index = +parts[1];
+    var record = self.parseOffset(data.value);
+    pending++;
+    self.data.getAsync(record.size, record.offset, function(err, data) {
+      if (err)
+        return callback(err);
+
+      if (data) {
+        var coin = bcoin.coin.fromRaw(data, true);
+        coin.hash = hash;
+        coin.index = index;
+        coin.height = record.height;
+        coins.push(coin);
+      }
+
+      pending--;
+
+      if (done) {
+        if (!pending)
+          return callback(null, coins);
+      }
+    });
+  });
+
+  stream.on('error', function(err) {
+    return callback(err);
+  });
+
+  stream.on('end', function() {
+    done = true;
+    if (!pending)
+      return callback(null, coins);
+  });
+};
+
+BlockDB.prototype.getCoin = function getCoin(hash, index, callback) {
+  var self = this;
+  var id = 'u/t/' + hash + '/' + index;
+
+  this.index.get(id, { valueEncoding: 'binary' }, function(err, record) {
+    if (err) {
+      if (err.type === 'NotFoundError')
+        return callback();
+      return callback(err);
+    }
+
+    record = self.parseOffset(record);
+
+    self.data.getAsync(record.size, record.offset, function(err, data) {
+      var coin;
+
+      if (err)
+        return callback(err);
+
+      if (data) {
+        coin = bcoin.coin.fromRaw(data, true);
+        coin.hash = hash;
+        coin.index = index;
+        coin.height = record.height;
+      }
+
+      return callback(null, coin);
+    });
+  });
+};
+
+BlockDB.prototype.getTXByAddress = function getTXByAddress(addresses, callback) {
+  var self = this;
+  var txs = [];
+  var pending;
+
+  if (typeof addresses === 'string')
+    addresses = [addresses];
+
+  addresses = utils.uniqs(addresses);
+
+  pending = addresses.length;
+
+  if (!pending)
+    return callback(null, txs);
+
+  addresses.forEach(function(address) {
+    self._getTXByAddress(address, function(err, tx) {
+      if (err)
+        return callback(err);
+
+      if (tx)
+        txs = txs.concat(tx);
+
+      if (!--pending)
+        return callback(null, txs);
+    });
+  });
+};
+
+BlockDB.prototype._getTXByAddress = function _getTXByAddress(address, callback) {
+  var self = this;
+  var pending = 0;
+  var txs = [];
+  var done = false;
+  var stream;
+
+  callback = utils.asyncify(callback);
+
+  stream = this.index.createReadStream({
+    start: 't/a/' + address,
+    end: 't/a/' + address + '~'
+  });
+
+  stream.on('data', function(data) {
+    var parts = data.key.split('/').slice(3);
+    var hash = parts[0];
+    var record = self.parseOffset(data.value);
+
+    pending++;
+
+    self.data.getAsync(record.size, record.offset, function(err, data) {
+      var tx, entry;
+
+      if (err)
+        return callback(err);
+
+      if (data) {
+        tx = bcoin.tx.fromRaw(data);
+        entry = bcoin.chain.global.db.get(record.height);
+        tx.height = record.height;
+        tx.ts = entry.ts;
+        tx.block = entry.hash;
+        txs.push(tx);
+      }
+
+      pending--;
+
+      if (done) {
+        if (!pending)
+          return callback(null, txs);
+      }
+    });
+  });
+
+  stream.on('error', function(err) {
+    return callback(err);
+  });
+
+  stream.on('end', function() {
+    done = true;
+    if (!pending)
+      return callback(null, txs);
+  });
+};
+
+BlockDB.prototype.getTX = function getTX(hash, callback) {
+  var self = this;
+  var id = 't/t/' + hash;
+
+  this.index.get(id, { valueEncoding: 'binary' }, function(err, record) {
+    if (err) {
+      if (err.type === 'NotFoundError')
+        return callback();
+      return callback(err);
+    }
+
+    record = self.parseOffset(record);
+
+    self.data.getAsync(record.size, record.offset, function(err, data) {
+      var tx, entry;
+
+      if (err)
+        return callback(err);
+
+      if (data) {
+        tx = bcoin.tx.fromRaw(data);
+        entry = bcoin.chain.global.db.get(record.height);
+        tx.height = record.height;
+        tx.ts = entry.ts;
+        tx.block = entry.hash;
+      }
+
+      return callback(null, tx);
+    });
+  });
+};
+
+BlockDB.prototype.getBlock = function getBlock(hash, callback) {
+  var self = this;
+  var id = 'b/b/' + value;
+
+  if (typeof hash === 'number')
+    id = 'b/h/' + value;
+
+  this.index.get(id, { valueEncoding: 'binary' }, function(err, record) {
+    if (err) {
+      if (err.type === 'NotFoundError')
+        return callback();
+      return callback(err);
+    }
+
+    record = self.parseOffset(record);
+
+    self.data.getAsync(record.size, record.offset, function(err, data) {
+      var block;
+
+      if (err)
+        return callback(err);
+
+      if (data) {
+        block = bcoin.block.fromRaw(data);
+        block._fileOffset = record.offset;
+        block.height = record.height;
+      }
+
+      return callback(null, block);
+    });
+  });
+};
+
+/**
+ * BlockData
+ */
+
+function BlockData(chain, options) {
+  if (!(this instanceof BlockData))
+    return new BlockData(chain, options);
+
+  if (!options)
+    options = {};
+
+  this.options = options;
+  this.chain = chain;
+  this.file = options.file;
+
+  if (!this.file)
+    this.file = process.env.HOME + '/bcoin-' + network.type + '.data';
+
+  this._queue = [];
+  this._cache = {};
+  this._bufferPool = { used: {} };
+  this.size = 0;
+  this.fd = null;
+
+  this._init();
+}
+
+BlockData.prototype._init = function _init() {
+  if (!bcoin.fs) {
+    utils.debug('`fs` module not available. Falling back to ramdisk.');
+    this.ramdisk = bcoin.ramdisk(new Buffer([]), 40 * 1024 * 1024);
+    return;
+  }
+
+  if (+process.env.BCOIN_FRESH === 1) {
+    try {
+      fs.unlinkSync(this.file);
+    } catch (e) {
+      ;
+    }
+  }
+
+  if (!this.exists()) {
+    fs.writeFileSync(this.file, new Buffer(0));
+    fs.truncateSync(this.file, 0);
+  }
+
+  this.size = this.getSize();
+
+  this.fd = fs.openSync(this.file, 'r+');
+};
+
+BlockData.prototype._malloc = function(size) {
+  if (!this._bufferPool[size])
+    this._bufferPool[size] = new Buffer(size);
+
+  if (this._bufferPool.used[size] === this._bufferPool[size])
+    return new Buffer(size);
+
+  this._bufferPool.used[size] = this._bufferPool[size];
+
+  return this._bufferPool[size];
+};
+
+BlockData.prototype._free = function(buf) {
+  if (this._bufferPool.used[buf.length] === buf) {
+    assert(this._bufferPool[buf.length] === buf);
+    delete this._bufferPool.used[buf.length];
+  }
+};
+
+BlockData.prototype.exists = function exists() {
+  if (!bcoin.fs)
+    return true;
+
+  try {
+    fs.statSync(this.file);
+    return true;
+  } catch (e) {
+    return false;
+  }
+};
+
+BlockData.prototype.getSize = function getSize() {
+  if (!bcoin.fs)
+    return this.ramdisk.size;
+
+  try {
+    return fs.statSync(this.file).size;
+  } catch (e) {
+    return 0;
+  }
+};
+
+BlockData.prototype.getSync = function getSync(size, offset) {
+  var hash = size + '/' + offset;
+
+  if (this._cache[hash])
+    return this._cache[hash];
+
+  if (this._queue[hash])
+    return this._queue[hash];
+
+  return this._readSync(size, offset);
+};
+
+BlockData.prototype.getAsync = function getAsync(size, offset, callback) {
+  var self = this;
+  var hash = size + '/' + offset;
+
+  callback = utils.asyncify(callback);
+
+  if (this._cache[hash])
+    return callback(null, this._cache[hash]);
+
+  if (this._queue[hash])
+    return callback(null, this._queue[hash]);
+
+  return this._readAsync(size, offset, callback);
+};
+
+BlockData.prototype.saveSync = function saveSync(data) {
+  var self = this;
+  var offset = this.size;
+  var hash = data + '/' + offset;
+
+  this._writeSync(data, offset);
+
+  return { size: data.length, offset: offset };
+};
+
+BlockData.prototype.saveAsync = function saveAsync(data, callback) {
+  var self = this;
+  var offset = this.size;
+  var hash = data + '/' + offset;
+
+  callback = utils.asyncify(callback);
+
+  // Something is already writing. Cancel it
+  // and synchronously write the data after
+  // it cancels.
+  if (this._queue[hash]) {
+    this._queue[hash] = data;
+    return callback(null, { size: data.length, offset: offset });
+  }
+
+  // Speed up writes by doing them asynchronously
+  // and keeping the data to be written in memory.
+  this._queue[hash] = data;
+
+  return this._writeAsync(data, offset, function(err, success) {
+    if (err)
+      return callback(err);
+
+    var item = self._queue[hash];
+
+    // Something tried to write here but couldn't.
+    // Synchronously write it and get it over with.
+    try {
+      if (item && item !== data)
+        success = self._writeSync(item, offset);
+    } catch (e) {
+      err = e;
+    }
+
+    delete self._queue[hash];
+
+    return callback(null, { size: data.length, offset: offset });
+  });
+};
+
+BlockData.prototype.truncate = function truncate(height) {
+  this.size = (height + 1) * BLOCK_SIZE;
+  this.tip = height;
+
+  if (!bcoin.fs) {
+    this.ramdisk.truncate(this.size);
+    return;
+  }
+
+  fs.ftruncateSync(this.fd, this.size);
+};
+
+BlockData.prototype._readSync = function _readSync(size, offset) {
+  var index = 0;
+  var data, bytes;
+
+  if (offset < 0 || offset == null)
+    return;
+
+  if (!bcoin.fs)
+    return this.ramdisk.read(size, offset);
+
+  data = this._malloc(size);
+
+  try {
+    while (bytes = fs.readSync(this.fd, data, index, size, offset)) {
+      index += bytes;
+      size -= bytes;
+      offset += bytes;
+      if (index === data.length) {
+        this._free(data);
+        return data;
+      }
+    }
+  } catch (e) {
+    this._free(data);
+    throw e;
+  }
+
+  this._free(data);
+
+  throw new Error('_readSync() failed.');
+};
+
+BlockData.prototype._readAsync = function _readAsync(size, offset, callback) {
+  var self = this;
+  var index = 0;
+  var data, bytes;
+
+  callback = utils.asyncify(callback);
+
+  if (offset < 0 || offset == null)
+    return callback();
+
+  if (!bcoin.fs)
+    return callback(null, this.ramdisk.read(size, offset));
+
+  data = this._malloc(size);
+
+  (function next() {
+    fs.read(self.fd, data, index, size, offset, function(err, bytes) {
+      if (err) {
+        self._free(data);
+        return callback(err);
+      }
+
+      index += bytes;
+      size -= bytes;
+      offset += bytes;
+
+      if (index === data.length) {
+        self._free(data);
+        return callback(null, data);
+      }
+
+      next();
+    });
+  })();
+};
+
+BlockData.prototype._writeSync = function _writeSync(data, offset) {
+  var size = data.length;
+  var added = Math.max(0, (offset + data.length) - this.size);
+  var index = 0;
+  var bytes;
+
+  if (offset < 0 || offset == null)
+    return false;
+
+  if (!bcoin.fs) {
+    this.size += added;
+    this.ramdisk.write(data, offset);
+    return;
+  }
+
+  try {
+    while (bytes = fs.writeSync(this.fd, data, index, size, offset)) {
+      index += bytes;
+      size -= bytes;
+      offset += bytes;
+      if (index === data.length) {
+        this.size += added;
+        return true;
+      }
+    }
+  } catch (e) {
+    throw e;
+  }
+
+  throw new Error('_writeSync() failed.');
+};
+
+BlockData.prototype._writeAsync = function _writeAsync(data, offset, callback) {
+  var self = this;
+  var added = Math.max(0, (offset + data.length) - this.size);
+  var size = data.length;
+  var index = 0;
+
+  callback = utils.asyncify(callback);
+
+  if (offset < 0 || offset == null)
+    return callback(null, false);
+
+  if (!bcoin.fs) {
+    this.size += added;
+    this.ramdisk.write(data, offset);
+    return callback(null, true);
+  }
+
+  this.size += added;
+
+  (function next() {
+    fs.write(self.fd, data, index, size, offset, function(err, bytes) {
+      if (err) {
+        self.size -= (added - index);
+        return callback(err);
+      }
+
+      index += bytes;
+      size -= bytes;
+      offset += bytes;
+
+      if (index === data.length)
+        return callback(null, true);
+
+      next();
+    });
+  })();
+};
+
+/**
+ * Expose
+ */
+
+module.exports = BlockDB;
diff --git a/lib/bcoin/coin.js b/lib/bcoin/coin.js
index 51439cfe..e2102e0c 100644
--- a/lib/bcoin/coin.js
+++ b/lib/bcoin/coin.js
@@ -34,6 +34,8 @@ function Coin(tx, index) {
     this.height = tx.height;
     this.value = tx.outputs[index].value;
     this.script = tx.outputs[index].script;
+    this._offset = tx.outputs[index]._offset;
+    this._size = tx.outputs[index]._size;
     this.hash = tx.hash('hex');
     this.index = index;
     this.spent = false;
@@ -46,6 +48,8 @@ function Coin(tx, index) {
     this.hash = options.hash;
     this.index = options.index;
     this.spent = options.spent;
+    this._size = options._size || 0;
+    this._offset = options._offset || 0;
   }
 
   if (utils.isBuffer(this.hash))
diff --git a/lib/bcoin/input.js b/lib/bcoin/input.js
index e136ecae..5c391530 100644
--- a/lib/bcoin/input.js
+++ b/lib/bcoin/input.js
@@ -39,6 +39,8 @@ function Input(options) {
 
   this.script = options.script ? options.script.slice() : [];
   this.sequence = options.sequence == null ? 0xffffffff : options.sequence;
+  this._size = options._size || 0;
+  this._offset = options._offset || 0;
 
   // Legacy
   if (options.seq != null)
diff --git a/lib/bcoin/mempool.js b/lib/bcoin/mempool.js
index 8769fcc7..aa1a3109 100644
--- a/lib/bcoin/mempool.js
+++ b/lib/bcoin/mempool.js
@@ -19,7 +19,7 @@ var fs = bcoin.fs;
  * Mempool
  */
 
-function Mempool(pool, options) {
+function Mempool(node, options) {
   if (!(this instanceof Mempool))
     return new Mempool(pool, options);
 
@@ -27,11 +27,13 @@ function Mempool(pool, options) {
     options = {};
 
   this.options = options;
-  this.pool = pool;
-  this.storage = bcoin.db;
+  this.node = node;
+  this.pool = node.pool;
+  this.storage = node.storage;
 
   this.txs = {};
-  this.prevout = {};
+  this.spent = {};
+  this.addresses = {};
   this.size = 0;
   this.count = 0;
   this.locked = false;
@@ -39,42 +41,119 @@ function Mempool(pool, options) {
   this._init();
 }
 
-Mempool.prototype._init = function _init() {
-  var self = this;
+inherits(Mempool, EventEmitter);
 
+Mempool.prototype._init = function _init() {
+  ;
+};
+
+Mempool.prototype.addBlock = function addBlock(block) {
+  var self = this;
   // Remove now-mined transactions
-  this.pool.on('block', function(block) {
-    block.txs.forEach(function(tx) {
-      var mtx = self.get(tx);
+  block.txs.forEach(function(tx) {
+    var mtx = self.get(tx);
+    if (!mtx)
+      return;
+
+    mtx.ps = 0;
+    mtx.ts = block.ts;
+    mtx.block = block.hash('hex');
+    mtx.network = true;
+
+    self.removeTX(mtx);
+  });
+};
+
+Mempool.prototype.removeBlock = function removeBlock(block) {
+  var self = this;
+  block.txs.forEach(function(tx) {
+    var hash = tx.hash('hex');
+    // Remove anything that tries to redeem these outputs
+    tx.outputs.forEach(function(output, i) {
+      var mtx = self.spent[hash + '/' + i];
       if (!mtx)
         return;
 
-      mtx.ps = 0;
-      mtx.ts = block.ts;
-      mtx.block = block.hash('hex');
-
-      self.remove(mtx);
+      self.removeTX(mtx);
     });
   });
 };
 
-Mempool.prototype.get = function get(hash) {
+Mempool.prototype.get =
+Mempool.prototype.getTX = function getTX(hash) {
   if (hash instanceof bcoin.tx)
     hash = hash.hash('hex');
   return this.txs[hash];
 };
 
+Mempool.prototype.getCoin = function getCoin(hash, index) {
+  var tx = this.get(hash);
+  if (!tx)
+    return;
+
+  return bcoin.coin(tx, index);
+};
+
+Mempool.prototype.isSpent = function isSpent(hash, index) {
+  return !!this.spent[hash + '/' + index];
+};
+
+Mempool.prototype.getCoinsByAddress = function getCoinsByAddress(addresses) {
+  var txs = this.getByAddress(addresses);
+  return txs.reduce(function(out, tx) {
+    return out.concat(tx.outputs.map(function(output, i) {
+      return bcoin.coin(tx, i);
+    }));
+  }, []);
+};
+
+Mempool.prototype.getByAddress =
+Mempool.prototype.getTXByAddress = function getTXByAddress(addresses) {
+  var self = this;
+  var txs = [];
+  var uniq = {};
+
+  if (typeof addresses === 'string')
+    addresses = [addresses];
+
+  addresses = utils.uniqs(addresses);
+
+  addresses.forEach(function(address) {
+    var map = self.addresses[address];
+    if (!map)
+      return;
+
+    Object.keys(map).forEach(function(hash) {
+      var tx;
+
+      if (uniq[hash])
+        return;
+
+      uniq[hash] = true;
+
+      tx = self.get(hash);
+      assert(tx);
+
+      txs.push(tx);
+    });
+  });
+
+  return txs;
+};
+
 Mempool.prototype.getAll = function getAll(hash) {
   return Object.keys(this.txs).map(function(key) {
     return this.txs[key];
   }, this);
 };
 
-Mempool.prototype.has = function has(hash) {
+Mempool.prototype.has =
+Mempool.prototype.hasTX = function hasTX(hash) {
   return !!this.get(hash);
 };
 
-Mempool.prototype.add = function add(tx, peer, callback) {
+Mempool.prototype.add =
+Mempool.prototype.addTX = function addTX(tx, peer, callback) {
   var self = this;
   var hash = tx.hash('hex');
 
@@ -105,6 +184,7 @@ Mempool.prototype.add = function add(tx, peer, callback) {
       return callback(err);
 
     if (!tx.hasPrevout()) {
+      return callback(new Error('Previous outputs not found.'));
       peer.reject({
         data: tx.hash(),
         reason: 'no-prevout'
@@ -114,6 +194,7 @@ Mempool.prototype.add = function add(tx, peer, callback) {
     }
 
     if (!tx.isStandard()) {
+      return callback(new Error('TX is not standard.'));
       peer.reject({
         data: tx.hash(),
         reason: 'non-standard'
@@ -123,6 +204,7 @@ Mempool.prototype.add = function add(tx, peer, callback) {
     }
 
     if (!tx.isStandardInputs()) {
+      return callback(new Error('TX inputs are not standard.'));
       peer.reject({
         data: tx.hash(),
         reason: 'non-standard-inputs'
@@ -132,6 +214,7 @@ Mempool.prototype.add = function add(tx, peer, callback) {
     }
 
     if (tx.getOutputValue().cmp(tx.getInputValue()) > 0) {
+      return callback(new Error('TX is spending coins that it does not have.'));
       peer.reject({
         data: tx.hash(),
         reason: 'nonexistent-coins'
@@ -143,6 +226,7 @@ Mempool.prototype.add = function add(tx, peer, callback) {
     height = self.pool.chain.height() + 1;
     ts = utils.now();
     if (!tx.isFinal(height, ts)) {
+      return callback(new Error('TX is not final.'));
       peer.reject({
         data: tx.hash(),
         reason: 'not-final'
@@ -154,6 +238,7 @@ Mempool.prototype.add = function add(tx, peer, callback) {
     for (i = 0; i < tx.inputs.length; i++) {
       input = tx.inputs[i];
       if (input.output.spent) {
+        return callback(new Error('TX is spending old outputs.'));
         peer.reject({
           data: tx.hash(),
           reason: 'old-outputs'
@@ -161,7 +246,7 @@ Mempool.prototype.add = function add(tx, peer, callback) {
         pool.setMisbehavior(peer, 100);
         return callback(new Error('TX is spending old outputs.'));
       }
-      dup = self.prevout[input.prevout.hash];
+      dup = self.spent[input.prevout.hash + '/' + input.prevout.index];
       if (dup) {
         // Replace-by-fee
         if (input.sequence === 0xffffffff - 1) {
@@ -170,6 +255,7 @@ Mempool.prototype.add = function add(tx, peer, callback) {
             continue;
           }
         }
+        return callback(new Error('TX is double spending.'));
         peer.reject({
           data: tx.hash(),
           reason: 'double-spend'
@@ -182,6 +268,7 @@ Mempool.prototype.add = function add(tx, peer, callback) {
     for (i = 0; i < tx.outputs.length; i++) {
       output = tx.outputs[i];
       if (output.value.cmpn(0) < 0) {
+        return callback(new Error('TX is spending negative coins.'));
         peer.reject({
           data: tx.hash(),
           reason: 'negative-value'
@@ -192,6 +279,7 @@ Mempool.prototype.add = function add(tx, peer, callback) {
     }
 
     if (!tx.verify(true)) {
+      return callback(new Error('TX did not verify.'));
       peer.reject({
         data: tx.hash(),
         reason: 'script-failed'
@@ -202,7 +290,7 @@ Mempool.prototype.add = function add(tx, peer, callback) {
 
     for (i = 0; i < tx.inputs.length; i++) {
       input = tx.inputs[i];
-      self.prevout[input.prevout.hash] = tx;
+      self.spent[input.prevout.hash + '/' + input.prevout.index] = tx;
     }
 
     // Possibly do something bitcoinxt-like here with priority
@@ -212,11 +300,28 @@ Mempool.prototype.add = function add(tx, peer, callback) {
     self.count++;
     self.size += tx.getSize();
 
-    self.storage.saveMempoolTX(tx, function(err) {
-      if (err)
-        return callback(err);
+    tx.inputs.forEach(function(input) {
+      var address = input.getAddress();
 
-      return callback();
+      if (!address)
+        return;
+
+      if (!self.addresses[address])
+        self.addresses[address] = {};
+
+      self.addresses[address][hash] = true;
+    });
+
+    tx.outputs.forEach(function(output) {
+      var address = output.getAddress();
+
+      if (!address)
+        return;
+
+      if (!self.addresses[address])
+        self.addresses[address] = {};
+
+      self.addresses[address][hash] = true;
     });
   });
 };
@@ -224,35 +329,38 @@ Mempool.prototype.add = function add(tx, peer, callback) {
 // Lock a tx to prevent race conditions
 Mempool.prototype._lockTX = function _lockTX(tx) {
   var hash = tx.hash('hex');
-  var i, input;
+  var i, input, id;
 
   if (!this.txs[hash])
     this.txs[hash] = tx;
 
   for (i = 0; i < tx.inputs.length; i++) {
     input = tx.inputs[i];
-    if (!this.prevout[input.prevout.hash])
-      this.prevout[input.prevout.hash] = tx;
+    id = input.prevout.hash + '/' + input.prevout.index;
+    if (!this.spent[id])
+      this.spent[id] = tx;
   }
 };
 
 Mempool.prototype._unlockTX = function _unlockTX(tx) {
   var hash = tx.hash('hex');
-  var i, input;
+  var i, input, id;
 
   if (this.txs[hash] === tx)
     delete this.txs[hash];
 
   for (i = 0; i < tx.inputs.length; i++) {
     input = tx.inputs[i];
-    if (this.prevout[input.prevout.hash] === tx)
-      delete this.prevout[input.prevout.hash];
+    id = input.prevout.hash + '/' + input.prevout.index;
+    if (this.spent[id] === tx)
+      delete this.spent[id];
   }
 };
 
-Mempool.prototype.remove = function remove(hash, callback) {
+Mempool.prototype.remove =
+Mempool.prototype.removeTX = function removeTX(hash, callback) {
   var self = this;
-  var tx, input;
+  var tx, input, id;
 
   callback = utils.asyncify(callback);
 
@@ -266,8 +374,9 @@ Mempool.prototype.remove = function remove(hash, callback) {
 
   for (i = 0; i < tx.inputs.length; i++) {
     input = tx.inputs[i];
-    if (this.prevout[input.prevout.hash] === tx)
-      delete this.prevout[input.prevout.hash];
+    id = input.prevout.hash + '/' + input.prevout.index;
+    if (this.spent[id] === tx)
+      delete this.spent[id];
   }
 
   delete this.txs[hash];
@@ -275,11 +384,30 @@ Mempool.prototype.remove = function remove(hash, callback) {
   this.count--;
   this.size -= tx.getSize();
 
-  this.storage.removeMempoolTX(tx, function(err) {
-    if (err)
-      return callback(err);
+  tx.inputs.forEach(function(input) {
+    var address = input.getAddress();
 
-    return callback();
+    if (!address)
+      return;
+
+    if (self.addresses[address]) {
+      delete self.addresses[address][hash];
+      if (Object.keys(self.addresses[address]).length === 0)
+        delete self.addresses[address];
+    }
+  });
+
+  tx.outputs.forEach(function(output) {
+    var address = output.getAddress();
+
+    if (!address)
+      return;
+
+    if (self.addresses[address]) {
+      delete self.addresses[address][hash];
+      if (Object.keys(self.addresses[address]).length === 0)
+        delete self.addresses[address];
+    }
   });
 };
 
diff --git a/lib/bcoin/node.js b/lib/bcoin/node.js
new file mode 100644
index 00000000..c0c414c3
--- /dev/null
+++ b/lib/bcoin/node.js
@@ -0,0 +1,218 @@
+/**
+ * node.js - full node for bcoin
+ * Copyright (c) 2014-2015, Fedor Indutny (MIT License)
+ * https://github.com/indutny/bcoin
+ */
+
+var inherits = require('inherits');
+var EventEmitter = require('events').EventEmitter;
+var bcoin = require('../bcoin');
+var bn = require('bn.js');
+var constants = bcoin.protocol.constants;
+var network = bcoin.protocol.network;
+var utils = bcoin.utils;
+var assert = utils.assert;
+var fs = bcoin.fs;
+
+/**
+ * Node
+ */
+
+function Node(options) {
+  if (!(this instanceof Node))
+    return new Node(options);
+
+  EventEmitter.call(this);
+
+  if (!options)
+    options = {};
+
+  this.options = options;
+
+  if (this.options.debug)
+    bcoin.debug = this.options.debug;
+
+  if (this.options.network)
+    network.set(this.options.network);
+
+  this.storage = null;
+  this.mempool = null;
+  this.pool = null;
+  this.chain = null;
+
+  Node.global = this;
+
+  this._init();
+}
+
+inherits(Node, EventEmitter);
+
+Node.prototype._init = function _init() {
+  var self = this;
+
+  if (!this.options.pool)
+    this.options.pool = {};
+
+  this.options.pool.type = 'full';
+
+  this.storage = new bcoin.blockdb(this.options.storage);
+  this.mempool = new bcoin.mempool(this, this.options.mempool);
+  this.pool = new bcoin.pool(this.options.pool);
+  this.chain = this.pool.chain;
+
+  this.pool.on('block', function(block, peer) {
+    self.storage.saveBlock(block, function(err) {
+      if (err)
+        throw err;
+
+      self.mempool.addBlock(block);
+      var hash = block.txs[0].hash('hex');
+      if (0)
+      self.storage.getTX(hash, function(err, tx) {
+        if (err) throw err;
+        utils.print(tx);
+      });
+      self.storage.getCoin(hash, 0, function(err, tx) {
+        if (err) throw err;
+        utils.print(tx);
+      });
+    });
+  });
+
+  this.mempool.on('error', function(err) {
+    self.emit('error', err);
+  });
+
+  this.chain.on('error', function(err) {
+    self.emit('error', err);
+  });
+
+  this.pool.on('error', function(err) {
+    self.emit('error', err);
+  });
+
+  this.pool.on('fork', function(a, b) {
+    [a, b].forEach(function(hash) {
+      self.storage.removeBlock(hash, function(err, block) {
+        if (err)
+          throw err;
+
+        if (!block)
+          return;
+
+        self.mempool.removeBlock(block);
+      });
+    });
+  });
+
+  this.pool.on('tx', function(tx, peer) {
+    assert(tx.ts === 0);
+    self.mempool.addTX(tx, peer);
+  });
+
+  this.pool.startSync();
+};
+
+Node.prototype.getCoin = function getCoin(hash, index, callback) {
+  var self = this;
+  var coin;
+
+  callback = utils.asyncify(callback);
+
+  coin = this.mempool.getCoin(hash, index);
+  if (coin)
+    return callback(null, coin);
+
+  if (this.mempool.isSpent(hash, index))
+    return callback(null, null);
+
+  this.storage.getCoin(hash, index, function(err, coin) {
+    if (err)
+      return callback(err);
+
+    if (!coin)
+      return;
+
+    return callback(null, coin);
+  });
+};
+
+Node.prototype.getCoinByAddress = function getCoinsByAddress(addresses, callback) {
+  var self = this;
+  var mempool;
+
+  callback = utils.asyncify(callback);
+
+  mempool = this.mempool.getCoinsByAddress(addresses);
+
+  this.storage.getCoinsByAddress(addresses, function(err, coins) {
+    if (err)
+      return callback(err);
+
+    return callback(null, mempool.concat(coins.filter(function(coin) {
+      if (self.mempool.isSpent(coin.hash, coin.index))
+        return false;
+      return true;
+    })));
+  });
+};
+
+Node.prototype.getTX = function getTX(hash, callback) {
+  var self = this;
+  var tx;
+
+  callback = utils.asyncify(callback);
+
+  tx = this.mempool.getTX(hash);
+  if (tx)
+    return callback(null, tx);
+
+  this.storage.getTX(hash, function(err, tx) {
+    if (err)
+      return callback(err);
+
+    return callback(null, tx);
+  });
+};
+
+Node.prototype.isSpent = function isSpent(hash, index, callback) {
+  var self = this;
+
+  callback = utils.asyncify(callback);
+
+  if (this.mempool.isSpent(hash, index))
+    return callback(null, true);
+
+  this.storage.getCoin(hash, index, function(err, coin) {
+    if (err)
+      return callback(err);
+
+    return callback(null, coin ? false : true);
+  });
+};
+
+Node.prototype.getTXByAddress = function getTXByAddress(addresses, callback) {
+  var self = this;
+  var mempool;
+
+  callback = utils.asyncify(callback);
+
+  mempool = this.mempool.getTXByAddress(addresses);
+
+  this.storage.getTXByAddress(addresses, function(err, txs) {
+    if (err)
+      return callback(err);
+
+    return callback(null, mempool.concat(txs));
+  });
+};
+
+Node.prototype.fillTX = function fillTX(tx, callback) {
+  this.storage.fillTX(tx, callback);
+};
+
+/**
+ * Expose
+ */
+
+module.exports = Node;
diff --git a/lib/bcoin/output.js b/lib/bcoin/output.js
index 56695e81..f8cb2fae 100644
--- a/lib/bcoin/output.js
+++ b/lib/bcoin/output.js
@@ -28,6 +28,8 @@ function Output(options) {
 
   this.value = utils.satoshi(value || new bn(0));
   this.script = options.script ? options.script.slice() : [];
+  this._size = options._size || 0;
+  this._offset = options._offset || 0;
 
   // For safety: do not allow usage of
   // Numbers, do not allow negative values.
diff --git a/lib/bcoin/protocol/parser.js b/lib/bcoin/protocol/parser.js
index 9bfc8080..34e5d2b6 100644
--- a/lib/bcoin/protocol/parser.js
+++ b/lib/bcoin/protocol/parser.js
@@ -340,7 +340,8 @@ Parser.prototype.parseBlock = function parseBlock(p) {
     tx = this.parseTX(p.slice(off));
     if (!tx)
       return this._error('Invalid tx count for block');
-    off += tx._off;
+    tx._offset = off;
+    off += tx._size;
     txs.push(tx);
   }
 
@@ -372,7 +373,7 @@ Parser.prototype.parseTXIn = function parseTXIn(p) {
     return this._error('Invalid tx_in script length');
 
   return {
-    size: off + scriptLen + 4,
+    _size: off + scriptLen + 4,
     prevout: {
       hash: utils.toArray(p.slice(0, 32)),
       index: utils.readU32(p, 32)
@@ -396,7 +397,7 @@ Parser.prototype.parseTXOut = function parseTXOut(p) {
     return this._error('Invalid tx_out script length');
 
   return {
-    size: off + scriptLen,
+    _size: off + scriptLen,
     value: utils.read64(p, 0),
     script: bcoin.script.decode(utils.toArray(p.slice(off, off + scriptLen)))
   };
@@ -428,7 +429,8 @@ Parser.prototype.parseTX = function parseTX(p) {
       return;
 
     txIn[i] = tx;
-    off += tx.size;
+    tx._offset = off;
+    off += tx._size;
 
     if (off + 5 > p.length)
       return this._error('Invalid tx_in offset');
@@ -450,7 +452,8 @@ Parser.prototype.parseTX = function parseTX(p) {
       return;
 
     txOut[i] = tx;
-    off += tx.size;
+    tx._offset = off;
+    off += tx._size;
 
     if (off + 4 > p.length)
       return this._error('Invalid tx_out offset');
@@ -462,8 +465,7 @@ Parser.prototype.parseTX = function parseTX(p) {
     inputs: txIn,
     outputs: txOut,
     locktime: utils.readU32(p, off),
-    _off: off + 4,
-    _size: p.length
+    _size: off + 4
   };
 };
 
diff --git a/lib/bcoin/tx.js b/lib/bcoin/tx.js
index b2a1beee..4c3366a9 100644
--- a/lib/bcoin/tx.js
+++ b/lib/bcoin/tx.js
@@ -37,6 +37,7 @@ function TX(data, block) {
 
   this._raw = data._raw || null;
   this._size = data._size || 0;
+  this._offset = data._offset || 0;
 
   this.height = data.height != null ? data.height : -1;
   this.network = data.network || false;
@@ -101,14 +102,30 @@ TX.prototype.clone = function clone() {
   return new TX(this);
 };
 
+TX.prototype.isStatic = function isStatic() {
+  return this.ts !== 0 || this.network;
+};
+
 TX.prototype.hash = function hash(enc, force) {
-  var h = utils.dsha256(this.render(force));
-  return enc === 'hex' ? utils.toHex(h) : h;
+  var hash;
+
+  if (!force && this._hash)
+    return enc === 'hex' ? utils.toHex(this._hash) : this._hash;
+
+  if (!force && this.isStatic() && this._raw)
+    hash = utils.dsha256(this._raw);
+  else
+    hash = utils.dsha256(this.render(true));
+
+  if (this.isStatic())
+    this._hash = hash;
+
+  return enc === 'hex' ? utils.toHex(hash) : hash;
 };
 
 TX.prototype.render = function render(force) {
-  if (!force && this.network && this._raw)
-    return utils.toArray(this._raw).slice();
+  if (!force && this.isStatic() && this._raw)
+    return utils.toArray(this._raw);
   return bcoin.protocol.framer.tx(this);
 };
 
@@ -145,6 +162,7 @@ TX.prototype._addInput = function _addInput(options, index) {
   if (options.seq != null)
     options.sequence = options.seq;
 
+  var isInput;
   if (!options.prevout) {
     if (options instanceof bcoin.coin) {
       options = {
@@ -167,6 +185,8 @@ TX.prototype._addInput = function _addInput(options, index) {
         sequence: options.sequence
       };
     }
+  } else {
+    isInput = true;
   }
 
   input = bcoin.input({
@@ -177,7 +197,9 @@ TX.prototype._addInput = function _addInput(options, index) {
     },
     output: options.output,
     script: options.script,
-    sequence: options.sequence
+    sequence: options.sequence,
+    _size: isInput ? options._size : null,
+    _offset: isInput ? options._offset : null
   });
 
   // Try modifying existing input first
@@ -673,7 +695,9 @@ TX.prototype.addOutput = function addOutput(obj, value) {
   output = bcoin.output({
     tx: this,
     value: options.value,
-    script: options.script
+    script: options.script,
+    _size: options._size,
+    _offset: options._offset
   });
 
   this.outputs.push(output);
@@ -1762,7 +1786,7 @@ TX.prototype.inspect = function inspect() {
   return copy;
 };
 
-TX.prototype.toJSON = function toJSON() {
+TX.prototype.toJSON = function toJSON(coins) {
   // Compact representation
   return {
     v: 1,
@@ -1774,9 +1798,9 @@ TX.prototype.toJSON = function toJSON() {
     network: this.network,
     relayedBy: this.relayedBy,
     changeIndex: this.changeIndex,
-    coins: this.inputs.map(function(input) {
+    coins: coins ? this.inputs.map(function(input) {
       return input.output ? input.output.toJSON() : null;
-    }),
+    }) : null,
     tx: utils.toHex(this.render())
   };
 };
@@ -1804,12 +1828,14 @@ TX.fromJSON = function fromJSON(json) {
   tx.block = json.block || null;
   tx.ps = json.ps;
 
-  json.coins.forEach(function(output, i) {
-    if (!output)
-      return;
+  if (json.coins) {
+    json.coins.forEach(function(output, i) {
+      if (!output)
+        return;
 
-    tx.inputs[i].output = bcoin.coin.fromJSON(output);
-  });
+      tx.inputs[i].output = bcoin.coin.fromJSON(output);
+    });
+  }
 
   return tx;
 };
@@ -1817,7 +1843,7 @@ TX.fromJSON = function fromJSON(json) {
 TX.prototype.toRaw = function toRaw(enc) {
   var data;
 
-  if (this.network && this._raw)
+  if (this.isStatic() && this._raw)
     data = this._raw;
   else
     data = new Buffer(this.render());