2 files changed, 12 insertions, 0 deletions
diff --git a/src/primitives/transaction.cpp b/src/primitives/transaction.cpp
index 606dbea798..d864a9b6d3 100644
--- a/src/primitives/transaction.cpp
+++ b/src/primitives/transaction.cpp
@@ -87,6 +87,15 @@ CTransaction& CTransaction::operator=(const CTransaction &tx) {
     return *this;
 }
 
+bool CTransaction::IsEquivalentTo(const CTransaction& tx) const
+{
+	CMutableTransaction tx1 = *this;
+	CMutableTransaction tx2 = tx;
+	for (unsigned int i = 0; i < tx1.vin.size(); i++) tx1.vin[i].scriptSig = CScript();
+	for (unsigned int i = 0; i < tx2.vin.size(); i++) tx2.vin[i].scriptSig = CScript();
+	return CTransaction(tx1) == CTransaction(tx2);
+}
+
 CAmount CTransaction::GetValueOut() const
 {
     CAmount nValueOut = 0;
diff --git a/src/primitives/transaction.h b/src/primitives/transaction.h
index 6cfd93a9a1..0c9ebb7b88 100644
--- a/src/primitives/transaction.h
+++ b/src/primitives/transaction.h
@@ -222,6 +222,9 @@ public:
         return hash;
     }
 
+    // True if only scriptSigs are different
+    bool IsEquivalentTo(const CTransaction& tx) const;
+
     // Return sum of txouts.
     CAmount GetValueOut() const;
     // GetValueIn() is a method on CCoinsViewCache, because