From 5cd34672d7085ca4d55693a1008101c02ceeb7e9 Mon Sep 17 00:00:00 2001
From: Surya Bakshi <sbaks0820@gmail.com>
Date: Sun, 1 Jan 2017 18:34:21 -0600
Subject: [PATCH] fixed issue in is_witness_scriptpubkey where self[0] is
 interpretted as str instead of the necessary int

---
 bitcoin/core/script.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bitcoin/core/script.py b/bitcoin/core/script.py
index b5ffdfa..baca69b 100644
--- a/bitcoin/core/script.py
+++ b/bitcoin/core/script.py
@@ -680,7 +680,7 @@ def is_p2sh(self):
     def is_witness_scriptpubkey(self):
         """Returns true if this is a scriptpubkey signaling segregated witness
         data. """
-        return 3 <= len(self) <= 42 and CScriptOp(self[0]).is_small_int()
+        return 3 <= len(self) <= 42 and CScriptOp(struct.unpack('<b',self[0])[0]).is_small_int()
 
     def witness_version(self):
         """Returns the witness version on [0,16]. """