From e461e443039fd586bb567c18fd3d149e5e32b5aa Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Wed, 20 Jan 2016 13:58:11 -0800
Subject: [PATCH] save memory by not storing prevBlock.

---
 lib/bcoin/chain.js | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/bcoin/chain.js b/lib/bcoin/chain.js
index 53d3e7eb..091aa532 100644
--- a/lib/bcoin/chain.js
+++ b/lib/bcoin/chain.js
@@ -61,7 +61,7 @@ function Chain(options) {
       {
         hash: network.genesis.hash,
         version: network.genesis.version,
-        prevBlock: network.genesis.prevBlock,
+        // prevBlock: network.genesis.prevBlock,
         ts: network.genesis.ts,
         bits: network.genesis.bits,
         height: 0
@@ -349,7 +349,7 @@ Chain.prototype.add = function add(block, peer) {
     entry = new ChainBlock(this, {
       hash: hash,
       version: block.version,
-      prevBlock: prevHash,
+      // prevBlock: prevHash,
       ts: block.ts,
       bits: block.bits,
       height: prevHeight + 1
@@ -872,7 +872,7 @@ function ChainBlock(chain, data) {
   this.chain = chain;
   this.hash = data.hash;
   this.version = data.version;
-  this.prevBlock = data.prevBlock;
+  // this.prevBlock = data.prevBlock;
   this.ts = data.ts;
   this.bits = data.bits;
   this.height = data.height;
@@ -950,7 +950,7 @@ ChainBlock.prototype.toJSON = function() {
   return {
     hash: this.hash,
     version: this.version,
-    prevBlock: this.prevBlock,
+    // prevBlock: this.prevBlock,
     ts: this.ts,
     bits: this.bits,
     height: this.height