fixes.

lib/bcoin/block.js

@@ -127,7 +127,7 @@ Block.verify = function verify(data, subtype) {
 };
 
 Block.prototype.render = function render() {
-  if (this.network && this._raw && this._raw.length > 80)
+  if (this.network && this._raw)
     return this._raw;
   return bcoin.protocol.framer.block(this, this.subtype);
 };
@@ -561,10 +561,7 @@ Block.prototype.toRaw = function toRaw(enc) {
 
   assert(this.subtype === 'block');
 
-  if (this.network && this._raw && this._raw.length > 80)
-    data = this._raw;
-  else
-    data = new Buffer(this.render());
+  data = new Buffer(this.render());
 
   if (enc === 'hex')
     data = utils.toHex(data);

lib/bcoin/miner.js

@@ -231,12 +231,9 @@ Miner.prototype.createBlock = function createBlock(tx) {
       // miner succeeded.
       new Buffer(this.msg || 'mined by bcoin', 'ascii')
     ],
-    seq: 0xffffffff
+    sequence: 0xffffffff
   });
 
-  if (bcoin.script.getSize(coinbase.inputs[0].script) > 100)
-    throw new Error('Coinbase script is too large');
-
   coinbase.addOutput({
     address: this.address,
     value: new bn(0)
@@ -246,7 +243,7 @@ Miner.prototype.createBlock = function createBlock(tx) {
   headers = {
     version: 4,
     prevBlock: this.last.hash,
-    merkleRoot: utils.toHex(constants.zeroHash.slice()),
+    merkleRoot: utils.toHex(constants.zeroHash),
     ts: ts,
     bits: target,
     nonce: 0

lib/bcoin/protocol/framer.js

@@ -262,7 +262,7 @@ Framer.prototype._getBlocks = function _getBlocks(cmd, hashes, stop) {
   }
 
   if (stop) {
-    if (typeof hash === 'string')
+    if (typeof stop === 'string')
       stop = new Buffer(stop, 'hex');
     len = utils.copy(stop, p, off);
   } else {

lib/bcoin/protocol/parser.js

@@ -440,7 +440,7 @@ Parser.prototype.parseCoin = function parseCoin(p, extended) {
     spent = utils.readU8(p, off) === 1;
     off += 1;
   } else {
-    hash = constants.zeroHash;
+    hash = new Buffer(constants.zeroHash);
     index = 0xffffffff;
     spent = false;
   }

lib/bcoin/tx.js

@@ -832,7 +832,7 @@ TX.prototype.signatureHash = function signatureHash(index, s, type) {
     // Bitcoind used to return 1 as an error code:
     // it ended up being treated like a hash.
     if (index >= copy.outputs.length)
-      return constants.oneHash.slice();
+      return new Buffer(constants.oneHash);
 
     // Drop all the outputs after the input index.
     copy.outputs.length = index + 1;