diff --git a/src/TransactionMeta.cpp b/src/TransactionMeta.cpp
new file mode 100644
index 0000000000..0772c0f067
--- /dev/null
+++ b/src/TransactionMeta.cpp
@@ -0,0 +1,70 @@
+#include "TransactionMeta.h"
+
+bool TransactionMetaNodeEntry::operator<(const TransactionMetaNodeEntry& e) const
+{
+	if (mType < e.mType) return true;
+	if (mType > e.mType) return false;
+	return compare(e) < 0;
+}
+
+bool TransactionMetaNodeEntry::operator<=(const TransactionMetaNodeEntry& e) const
+{
+	if (mType < e.mType) return true;
+	if (mType > e.mType) return false;
+	return compare(e) <= 0;
+}
+
+bool TransactionMetaNodeEntry::operator>(const TransactionMetaNodeEntry& e) const
+{
+	if (mType > e.mType) return true;
+	if (mType < e.mType) return false;
+	return compare(e) > 0;
+}
+
+bool TransactionMetaNodeEntry::operator>=(const TransactionMetaNodeEntry& e) const
+{
+	if (mType > e.mType) return true;
+	if (mType < e.mType) return false;
+	return compare(e) >= 0;
+}
+
+void TMNEBalance::adjustFirstAmount(const STAmount& a)
+{
+	mFirstAmount += a;
+}
+
+void TMNEBalance::adjustSecondAmount(const STAmount& a)
+{
+	mSecondAmount += a;
+	mFlags |= TMBTwoAmounts;
+}
+
+int TMNEBalance::compare(const TransactionMetaNodeEntry&) const
+{
+	assert(false); // should never be two TMNEBalance entries for the same node (as of now)
+	return 0;
+}
+
+Json::Value TMNEBalance::getJson(int p) const
+{
+	Json::Value ret(Json::objectValue);
+
+	if ((mFlags & TMBDestroyed) != 0)
+		ret["destroyed"] = "true";
+	if ((mFlags & TMBPaidFee) != 0)
+		ret["transaction_fee"] = "true";
+
+	if ((mFlags & TMBRipple) != 0)
+		ret["type"] = "ripple";
+	else if ((mFlags & TMBOffer) != 0)
+		ret["type"] = "offer";
+	else
+		ret["type"] = "account";
+
+	if (!mFirstAmount.isZero())
+		ret["amount"] = mFirstAmount.getJson(p);
+	if (!mSecondAmount.isZero())
+		ret["second_amount"] = mSecondAmount.getJson(p);
+
+	return ret;
+}
diff --git a/src/TransactionMeta.h b/src/TransactionMeta.h
index 4298304e09..97991034d4 100644
--- a/src/TransactionMeta.h
+++ b/src/TransactionMeta.h
@@ -27,7 +27,7 @@ public:
 
 	int getType() const { return mType; }
 	virtual Json::Value getJson(int) const = 0;
-	virtual int compare(const TransactionMetaNodeEntry&) = 0;
+	virtual int compare(const TransactionMetaNodeEntry&) const = 0;
 
 	bool operator<(const TransactionMetaNodeEntry&) const;
 	bool operator<=(const TransactionMetaNodeEntry&) const;
@@ -40,9 +40,8 @@ class TMNEBalance : public TransactionMetaNodeEntry
 public:
 
 	static const int TMBTwoAmounts 	= 0x001;
-	static const int TMBReverse		= 0x010;
-	static const int TMBDestroyed	= 0x020;
-	static const int TMBPaidFee		= 0x040;
+	static const int TMBDestroyed	= 0x010;
+	static const int TMBPaidFee		= 0x020;
 	static const int TMBRipple		= 0x100;
 	static const int TMBOffer		= 0x200;