diff --git a/src/komodo_validation015.h b/src/komodo_validation015.h
index b29c01ea9..512a5d083 100644
--- a/src/komodo_validation015.h
+++ b/src/komodo_validation015.h
@@ -54,7 +54,7 @@
 }*/
 
 #include <wallet/wallet.h>
-#include <key.h>
+#include <key_io.h>
 #include <base58.h>
 
 #define SATOSHIDEN ((uint64_t)100000000L)
diff --git a/src/primitives/transaction.h b/src/primitives/transaction.h
index f9723e399..2c20f83b2 100644
--- a/src/primitives/transaction.h
+++ b/src/primitives/transaction.h
@@ -13,6 +13,7 @@
 #include "uint256.h"
 #include "consensus/consensus.h"
 
+#include <memory>
 #include <boost/array.hpp>
 
 #include "zcash/NoteEncryption.hpp"
@@ -407,6 +408,10 @@ public:
     std::string ToString() const;
 };
 
+typedef std::shared_ptr<const CTransaction> CTransactionRef;
+static inline CTransactionRef MakeTransactionRef() { return std::make_shared<const CTransaction>(); }
+template <typename Tx> static inline CTransactionRef MakeTransactionRef(Tx&& txIn) { return std::make_shared<const CTransaction>(std::forward<Tx>(txIn)); }
+
 /** A mutable version of CTransaction. */
 struct CMutableTransaction
 {
diff --git a/src/script/standard.cpp b/src/script/standard.cpp
index ce50e3aad..88cde3698 100644
--- a/src/script/standard.cpp
+++ b/src/script/standard.cpp
@@ -316,3 +316,7 @@ CScript GetScriptForMultisig(int nRequired, const std::vector<CPubKey>& keys)
     script << CScript::EncodeOP_N(keys.size()) << OP_CHECKMULTISIG;
     return script;
 }
+
+bool IsValidDestination(const CTxDestination& dest) {
+    return dest.which() != 0;
+}
diff --git a/src/script/standard.h b/src/script/standard.h
index da778878b..c574b8146 100644
--- a/src/script/standard.h
+++ b/src/script/standard.h
@@ -84,6 +84,8 @@ typedef boost::variant<CNoDestination, CKeyID, CScriptID> CTxDestination;
 
 const char* GetTxnOutputType(txnouttype t);
 
+bool IsValidDestination(const CTxDestination& dest);
+
 bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<std::vector<unsigned char> >& vSolutionsRet);
 int ScriptSigArgsExpected(txnouttype t, const std::vector<std::vector<unsigned char> >& vSolutions);
 bool IsStandard(const CScript& scriptPubKey, txnouttype& whichType);