From 1aa55790aed7cb2a958cf67548fbbe854ed719b0 Mon Sep 17 00:00:00 2001
From: Thomas Kerin <afk11@users.noreply.github.com>
Date: Sun, 13 Mar 2016 18:09:56 +0000
Subject: [PATCH] Transaction.verifySignature(): no longer require
 satoshisBuffer param, can call Input method

---
 lib/transaction/transaction.js | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/lib/transaction/transaction.js b/lib/transaction/transaction.js
index e49d647..1c5202f 100644
--- a/lib/transaction/transaction.js
+++ b/lib/transaction/transaction.js
@@ -1194,22 +1194,14 @@ Transaction.prototype.isValidSignature = function(signature) {
 /**
  * @returns {bool} whether the signature is valid for this transaction input
  */
-Transaction.prototype.verifySignature = function(sig, pubkey, nin, subscript, sigversion, satoshisBuffer) {
+Transaction.prototype.verifySignature = function(sig, pubkey, nin, subscript, sigversion) {
 
   if (_.isUndefined(sigversion)) {
     sigversion = 0;
   }
 
-  if (_.isUndefined(satoshisBuffer)) {
-    if (sigversion == 1) {
-      throw new errors.Transaction.UnableToVerifySignature(
-          'satoshisBuffer is required when sigversion is 1'
-      );
-    }
-  }
-
   if (sigversion == 1) {
-    return SighashWitness.verify(this, sig, pubkey, nin, subscript, satoshisBuffer);
+    return SighashWitness.verify(this, sig, pubkey, nin, subscript, this.inputs[nin].getSatoshisBuffer());
   }
 
   return Sighash.verify(this, sig, pubkey, nin, subscript);