From 7c6e5cf7b1a913fc4e33b67d282b4797b2c93b53 Mon Sep 17 00:00:00 2001
From: Braydon Fuller <courier@braydon.com>
Date: Thu, 7 Apr 2016 10:14:43 -0400
Subject: [PATCH] bitcoind: only cache transaction with height if confirmations
 >= 6

---
 lib/services/bitcoind.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/services/bitcoind.js b/lib/services/bitcoind.js
index a0298cd6..8a1e9edb 100644
--- a/lib/services/bitcoind.js
+++ b/lib/services/bitcoind.js
@@ -42,6 +42,7 @@ function Bitcoin(options) {
   // caches valid indefinitely
   this.transactionCache = LRU(100000);
   this.transactionInfoCache = LRU(100000);
+  this.transactionInfoCacheConfirmations = 6;
   this.blockCache = LRU(144);
   this.blockHeaderCache = LRU(288);
   this.zmqKnownTransactions = LRU(50);
@@ -1043,7 +1044,10 @@ Bitcoin.prototype.getTransactionWithBlockInfo = function(txid, queryMempool, cal
       tx.__blockHash = response.result.blockhash;
       tx.__height = response.result.height;
       tx.__timestamp = response.result.time;
-      self.transactionInfoCache.set(txid, tx);
+      var confirmations = self._getConfirmationsDetail(tx);
+      if (confirmations >= self.transactionInfoCacheConfirmations) {
+        self.transactionInfoCache.set(txid, tx);
+      }
       callback(null, tx);
     });
   }