diff --git a/SQLiteDatabases.sql b/SQLiteDatabases.sql
index 13ad457ad..7efa3eb28 100644
--- a/SQLiteDatabases.sql
+++ b/SQLiteDatabases.sql
@@ -1,17 +1,15 @@
 
 CREATE TABLE Transactions (			-- transactions in all states
 	TransID		CHARACTER(64) PRIMARY KEY,	-- in hex
+	TransType	CHARACTER(24),
 	FromAcct	CHARACTER(40),		-- 20 byte hash of pub key in hex
 	FromSeq		BIGINT UNSIGNED,	-- account seq
-	FromLedger	BIGINT UNSIGNED,
-	Identifier	BIGINT UNSIGNED,
-	ToAcct		CHARACTER(40),		-- 20 byte hash of pub key
-	Amount		BIGINT UNSIGNED,
-	Fee			BIGINT UNSIGNED,
+	OtherAcct	CHARACTER(40),		-- 20 byte hash of pub key
+	Amount		BIGINT UNSINGED<	-- if newcoin transfer
 	FirstSeen	TEXT,				-- time first seen
 	CommitSeq	BIGINT UNSIGNED,	-- ledger commited to, 0 if none
 	Status		CHARACTER(1),		-- (N)ew, (A)ctive, (C)onflicted, (D)one, (H)eld
-	Signature	BLOB
+	RawTxn		BLOB
 );
 
 CREATE TABLE PubKeys ( -- holds pub keys for nodes and accounts
diff --git a/src/DBInit.cpp b/src/DBInit.cpp
index 3bc64d4f9..116df7887 100644
--- a/src/DBInit.cpp
+++ b/src/DBInit.cpp
@@ -4,17 +4,15 @@
 const char *TxnDBInit[] = {
 	"CREATE TABLE Transactions (				\
 		TransID		CHARACTER(64) PRIMARY KEY,	\
+		TransType	CHARACTER(24)				\
 		FromAcct	CHARACTER(35),				\
 		FromSeq		BIGINT UNSIGNED,			\
-		FromLedger	BIGINT UNSIGNED,			\
-		Identifier	BIGINT UNSIGNED,			\
-		ToAcct		CHARACTER(35),				\
+		OtherAcct	CHARACTER(40),				\
 		Amount		BIGINT UNSIGNED,			\
-		Fee			BIGINT UNSIGNED,			\
 		FirstSeen	TEXT,						\
 		CommitSeq	BIGINT UNSIGNED,			\
 		Status		CHARACTER(1),				\
-		Signature	BLOB						\
+		RawTxn		BLOB						\
 	);",
 	"CREATE TABLE PubKeys (						\
 		ID			CHARACTER(35) PRIMARY KEY,	\
diff --git a/src/Ledger.cpp b/src/Ledger.cpp
index a6d3bd57a..7779e72fc 100644
--- a/src/Ledger.cpp
+++ b/src/Ledger.cpp
@@ -154,7 +154,9 @@ bool Ledger::addTransaction(Transaction::pointer trans)
 { // low-level - just add to table
 	assert(!mAccepted);
 	assert(!!trans->getID());
-	SHAMapItem::pointer item=boost::make_shared<SHAMapItem>(trans->getID(), trans->getSigned()->getData());
+	Serializer s;
+	trans->getSTransaction()->getTransaction(s, false);
+	SHAMapItem::pointer item=boost::make_shared<SHAMapItem>(trans->getID(), s.peekData());
 	return mTransactionMap->addGiveItem(item, true);
 }
 
diff --git a/src/NetworkOPs.cpp b/src/NetworkOPs.cpp
index e5a1279c6..5ef3a0e8c 100644
--- a/src/NetworkOPs.cpp
+++ b/src/NetworkOPs.cpp
@@ -71,7 +71,8 @@ Transaction::pointer NetworkOPs::processTransaction(Transaction::pointer trans,
 
 		newcoin::TMTransaction *tx=new newcoin::TMTransaction();
 
-		Serializer::pointer s(trans->getSigned());
+		Serializer::pointer s;
+		trans->getSTransaction()->getTransaction(*s, false);
 		tx->set_rawtransaction(&s->getData().front(), s->getLength());
 		tx->set_status(newcoin::tsCURRENT);
 		tx->set_receivetimestamp(getNetworkTime());
diff --git a/src/Peer.cpp b/src/Peer.cpp
index c032b77f4..14e190004 100644
--- a/src/Peer.cpp
+++ b/src/Peer.cpp
@@ -5,6 +5,7 @@
 //#include <boost/log/trivial.hpp>
 #include <boost/bind.hpp>
 #include <boost/make_shared.hpp>
+#include <boost/ref.hpp>
 
 #include "../json/writer.h"
 
@@ -13,6 +14,7 @@
 #include "Config.h"
 #include "Application.h"
 #include "Conversion.h"
+#include "SerializedTransaction.h"
 
 Peer::Peer(boost::asio::io_service& io_service)
 	: mSocket(io_service)
@@ -335,12 +337,20 @@ void Peer::recvTransaction(newcoin::TMTransaction& packet)
 	std::cerr << "Got transaction from peer" << std::endl;
 #endif
 
-	std::string rawTx=packet.rawtransaction();
-	std::vector<unsigned char> rTx(rawTx.begin(), rawTx.end());
-	Transaction::pointer tx=boost::make_shared<Transaction>(rTx, true);
+	Transaction::pointer tx;
+	try
+	{
+		std::string rawTx=packet.rawtransaction();
+		Serializer s(std::vector<unsigned char>(rawTx.begin(), rawTx.end()));
+		SerializerIterator sit(s);
+		SerializedTransaction::pointer stx=boost::make_shared<SerializedTransaction>(boost::ref(sit), -1);
 
-	if(tx->getStatus()==INVALID)
-	{ // transaction fails basic validity tests
+		if(stx->getTxnType()!=ttMAKE_PAYMENT) throw(0); // FIXME to support other transaction
+		tx=boost::make_shared<Transaction>(stx, true);
+		if(tx->getStatus()==INVALID) throw(0);
+	}
+	catch (...)
+	{
 #ifdef DEBUG
 		std::cerr << "Transaction from peer fails validity tests" << std::endl;
 		Json::StyledStreamWriter w;
diff --git a/src/SerializedObject.cpp b/src/SerializedObject.cpp
index e9805ed83..e27ce55d2 100644
--- a/src/SerializedObject.cpp
+++ b/src/SerializedObject.cpp
@@ -1,53 +1,98 @@
 
 #include "SerializedObject.h"
 
-STUObject::STUObject(SOElement* elem, const char *name) : SerializedType(name)
+#include "boost/lexical_cast.hpp"
+
+SerializedType* STObject::makeDefaultObject(SerializedTypeID id, const char *name)
+{
+	switch(id)
+	{
+		case STI_UINT16:
+			return new STUInt16(name);
+
+		case STI_UINT32:
+			return new STUInt32(name);
+
+		case STI_UINT64:
+			return new STUInt64(name);
+
+		case STI_HASH160:
+			return new STHash160(name);
+
+		case STI_HASH256:
+			return new STHash256(name);
+
+		case STI_VL:
+			return new STVariableLength(name);
+
+		case STI_TL:
+			return new STTaggedList(name);
+
+		case STI_ACCOUNT:
+			return new STAccount(name);
+
+		default:
+			return NULL;
+	}
+}
+
+SerializedType* STObject::makeDeserializedObject(SerializedTypeID id, const char *name, SerializerIterator& sit)
+{
+	switch(id)
+	{
+		case STI_UINT16:
+			return STUInt16::construct(sit, name);
+
+		case STI_UINT32:
+			return STUInt32::construct(sit, name);
+
+		case STI_UINT64:
+			return STUInt64::construct(sit, name);
+
+		case STI_HASH160:
+			return STHash160::construct(sit, name);
+
+		case STI_HASH256:
+			return STHash256::construct(sit, name);
+
+		case STI_VL:
+			return STVariableLength::construct(sit, name);
+
+		case STI_TL:
+			return STTaggedList::construct(sit, name);
+
+		case STI_ACCOUNT:
+			return STAccount::construct(sit, name);
+
+		default:
+			return NULL;
+	}
+}
+
+STObject::STObject(SOElement* elem, const char *name) : SerializedType(name), mFlagIdx(-1)
 {
 	while(elem->e_id!=STI_DONE)
 	{
-		type.push_back(elem);
+		if(elem->e_type==SOE_FLAGS) mFlagIdx=mType.size();
+		mType.push_back(elem);
 		if( (elem->e_type==SOE_IFFLAG) || (elem->e_type==SOE_IFNFLAG) )
-			giveObject(new STUObject(elem->e_name));
-		else switch(elem->e_id)
+			giveObject(new STObject(elem->e_name));
+		else
 		{
-			case STI_UINT16:
-				giveObject(new STUInt16(elem->e_name));
-				break;
-			case STI_UINT32:
-				giveObject(new STUInt32(elem->e_name));
-				break;
-			case STI_UINT64:
-				giveObject(new STUInt64(elem->e_name));
-				break;
-			case STI_HASH160:
-				giveObject(new STHash160(elem->e_name));
-				break;
-			case STI_HASH256:
-				giveObject(new STHash256(elem->e_name));
-				break;
-			case STI_VL:
-				giveObject(new STVariableLength(elem->e_name));
-				break;
-			case STI_TL:
-				giveObject(new STTaggedList(elem->e_name));
-				break;
-#if 0
-			case STI_ACCOUNT: // CHECKME: Should an account be variable length?
-				giveObject(new STVariableLength(elem->e_name));
-				break;
-#endif
-			default: throw(std::runtime_error("invalid transaction element"));
+			SerializedType* t=makeDefaultObject(elem->e_id, elem->e_name);
+			if(!t) throw(std::runtime_error("invalid transaction element"));
+			giveObject(t);
 		}
 		elem++;
 	}
 }
 
-STUObject::STUObject(SOElement* elem, SerializerIterator& sit, const char *name) : SerializedType(name)
+STObject::STObject(SOElement* elem, SerializerIterator& sit, const char *name) : SerializedType(name), mFlagIdx(-1)
 {
 	int flags=-1;
 	while(elem->e_id!=STI_DONE)
 	{
-		type.push_back(elem);
+		mType.push_back(elem);
 		bool done=false;
 		if(elem->e_type==SOE_IFFLAG)
 		{
@@ -63,47 +108,20 @@ STUObject::STUObject(SOElement* elem, SerializerIterator& sit, const char *name)
 		{
 			assert(elem->e_id==STI_UINT16);
 			flags=sit.get16();
-			giveObject(new STUInt16(elem->e_name, flags));
+			mFlagIdx=giveObject(new STUInt16(elem->e_name, flags));
 			done=true;
 		}
 		if(!done)
 		{
-			switch(elem->e_id)
-			{
-				case STI_UINT16:
-					giveObject(STUInt16::construct(sit, elem->e_name));
-					break;
-				case STI_UINT32:
-					giveObject(STUInt32::construct(sit, elem->e_name));
-					break;
-				case STI_UINT64:
-					giveObject(STUInt64::construct(sit, elem->e_name));
-					break;
-				case STI_HASH160:
-					giveObject(STHash160::construct(sit, elem->e_name));
-					break;
-				case STI_HASH256:
-					giveObject(STHash256::construct(sit, elem->e_name));
-					break;
-				case STI_VL:
-					giveObject(STVariableLength::construct(sit, elem->e_name));
-					break;
-				case STI_TL:
-					giveObject(STTaggedList::construct(sit, elem->e_name));
-					break;
-	#if 0
-				case STI_ACCOUNT: // CHECKME: Should an account be variable length?
-					giveObject(STVariableLength::construct(sit, elem->e_name));
-					break;
-	#endif
-				default: throw(std::runtime_error("invalid transaction element"));
-			}
+			SerializedType* t=makeDeserializedObject(elem->e_id, elem->e_name, sit);
+			if(!t) throw(std::runtime_error("invalid transaction element"));
+			giveObject(t);
 		}
 		elem++;
 	}
 }
 
-std::string STUObject::getFullText() const
+std::string STObject::getFullText() const
 {
 	std::string ret;
 	if(name!=NULL)
@@ -112,31 +130,31 @@ std::string STUObject::getFullText() const
 		ret+=" = {";
 	}
 	else ret="{";
-	for(boost::ptr_vector<SerializedType>::const_iterator it=data.begin(), end=data.end(); it!=end; ++it)
+	for(boost::ptr_vector<SerializedType>::const_iterator it=mData.begin(), end=mData.end(); it!=end; ++it)
 		ret+=it->getFullText();
 	ret+="}";
 	return ret;
 }
 
-int STUObject::getLength() const
+int STObject::getLength() const
 {
 	int ret=0;
-	for(boost::ptr_vector<SerializedType>::const_iterator it=data.begin(), end=data.end(); it!=end; ++it)
+	for(boost::ptr_vector<SerializedType>::const_iterator it=mData.begin(), end=mData.end(); it!=end; ++it)
 		ret+=it->getLength();
 	return ret;
 }
 
-void STUObject::add(Serializer& s) const
+void STObject::add(Serializer& s) const
 {
-	for(boost::ptr_vector<SerializedType>::const_iterator it=data.begin(), end=data.end(); it!=end; ++it)
+	for(boost::ptr_vector<SerializedType>::const_iterator it=mData.begin(), end=mData.end(); it!=end; ++it)
 		it->add(s);
 }
 
-std::string STUObject::getText() const
+std::string STObject::getText() const
 {
 	std::string ret="{";
 	bool first=false;
-	for(boost::ptr_vector<SerializedType>::const_iterator it=data.begin(), end=data.end(); it!=end; ++it)
+	for(boost::ptr_vector<SerializedType>::const_iterator it=mData.begin(), end=mData.end(); it!=end; ++it)
 	{
 		if(!first)
 		{
@@ -148,3 +166,313 @@ std::string STUObject::getText() const
 	ret+="}";
 	return ret;
 }
+
+int STObject::getFieldIndex(SOE_Field field) const
+{
+	int i=0;
+	for(std::vector<SOElement*>::const_iterator it=mType.begin(), end=mType.end(); it!=end; ++it, ++i)
+		if((*it)->e_field==field) return i;
+	return -1;
+}
+
+const SerializedType& STObject::peekAtField(SOE_Field field) const
+{
+	int index=getFieldIndex(field);
+	if(index==-1) throw std::runtime_error("Field not found");
+	return peekAtIndex(index);
+}
+
+SerializedType& STObject::getField(SOE_Field field)
+{
+	int index=getFieldIndex(field);
+	if(index==-1) throw std::runtime_error("Field not found");
+	return getIndex(index);
+}
+
+const SerializedType* STObject::peekAtPField(SOE_Field field) const
+{
+	int index=getFieldIndex(field);
+	if(index==-1) return NULL;
+	return peekAtPIndex(index);
+}
+
+SerializedType* STObject::getPField(SOE_Field field)
+{
+	int index=getFieldIndex(field);
+	if(index==-1) return NULL;
+	return getPIndex(index);
+}
+
+bool STObject::isFieldPresent(SOE_Field field) const
+{
+	int index=getFieldIndex(field);
+	if(index==-1) return false;
+	return peekAtIndex(field).getType()==STI_OBJECT;
+}
+
+bool STObject::setFlag(int f)
+{
+	if(mFlagIdx<0) return false;
+	STUInt16* t=dynamic_cast<STUInt16*>(getPIndex(mFlagIdx));
+	assert(t);
+	t->setValue(t->getValue() | f);
+	return true;
+}
+
+bool STObject::clearFlag(int f)
+{
+	if(mFlagIdx<0) return false;
+	STUInt16* t=dynamic_cast<STUInt16*>(getPIndex(mFlagIdx));
+	assert(t);
+	t->setValue(t->getValue() & ~f);
+	return true;
+}
+
+int STObject::getFlag(void) const
+{
+	if(mFlagIdx<0) return 0;
+	const STUInt16* t=dynamic_cast<const STUInt16*>(peekAtPIndex(mFlagIdx));
+	assert(t);
+	return t->getValue();
+}
+
+void STObject::makeFieldPresent(SOE_Field field)
+{
+	int index=getFieldIndex(field);
+	if(index==-1) throw std::runtime_error("Field not found");
+	if(peekAtIndex(field).getType()!=STI_OBJECT) return;
+	mData.replace(index, makeDefaultObject(mType[index]->e_id, mType[index]->e_name));
+	setFlag(mType[index]->e_flags);
+}
+
+void STObject::makeFieldAbsent(SOE_Field field)
+{
+	int index=getFieldIndex(field);
+	if(index==-1) throw std::runtime_error("Field not found");
+	if(peekAtIndex(field).getType()==STI_OBJECT) return;
+	mData.replace(index, new STObject(mType[index]->e_name));
+	clearFlag(mType[index]->e_flags);
+}
+
+std::string STObject::getFieldString(SOE_Field field) const
+{
+	const SerializedType* rf=peekAtPField(field);
+	if(!rf) throw std::runtime_error("Field not found");
+	return rf->getText();
+}
+
+unsigned char STObject::getValueFieldU8(SOE_Field field) const
+{
+	const SerializedType* rf=peekAtPField(field);
+	if(!rf) throw std::runtime_error("Field not found");
+	SerializedTypeID id=rf->getType();
+	if(id==STI_OBJECT) return 0; // optional field not present
+	const STUInt8 *cf=dynamic_cast<const STUInt8 *>(rf);
+	if(!cf) throw std::runtime_error("Wrong field type");
+	return cf->getValue();
+}
+
+uint16 STObject::getValueFieldU16(SOE_Field field) const
+{
+	const SerializedType* rf=peekAtPField(field);
+	if(!rf) throw std::runtime_error("Field not found");
+	SerializedTypeID id=rf->getType();
+	if(id==STI_OBJECT) return 0; // optional field not present
+	const STUInt16 *cf=dynamic_cast<const STUInt16 *>(rf);
+	if(!cf) throw std::runtime_error("Wrong field type");
+	return cf->getValue();
+}
+
+uint32 STObject::getValueFieldU32(SOE_Field field) const
+{
+	const SerializedType* rf=peekAtPField(field);
+	if(!rf) throw std::runtime_error("Field not found");
+	SerializedTypeID id=rf->getType();
+	if(id==STI_OBJECT) return 0; // optional field not present
+	const STUInt32 *cf=dynamic_cast<const STUInt32 *>(rf);
+	if(!cf) throw std::runtime_error("Wrong field type");
+	return cf->getValue();
+}
+
+uint64 STObject::getValueFieldU64(SOE_Field field) const
+{
+	const SerializedType* rf=peekAtPField(field);
+	if(!rf) throw std::runtime_error("Field not found");
+	SerializedTypeID id=rf->getType();
+	if(id==STI_OBJECT) return 0; // optional field not present
+	const STUInt64 *cf=dynamic_cast<const STUInt64 *>(rf);
+	if(!cf) throw std::runtime_error("Wrong field type");
+	return cf->getValue();
+}
+
+uint160 STObject::getValueFieldH160(SOE_Field field) const
+{
+	const SerializedType* rf=peekAtPField(field);
+	if(!rf) throw std::runtime_error("Field not found");
+	SerializedTypeID id=rf->getType();
+	if(id==STI_OBJECT) return uint160(); // optional field not present
+	const STHash160 *cf=dynamic_cast<const STHash160 *>(rf);
+	if(!cf) throw std::runtime_error("Wrong field type");
+	return cf->getValue();
+}
+
+uint256 STObject::getValueFieldH256(SOE_Field field) const
+{
+	const SerializedType* rf=peekAtPField(field);
+	if(!rf) throw std::runtime_error("Field not found");
+	SerializedTypeID id=rf->getType();
+	if(id==STI_OBJECT) return uint256(); // optional field not present
+	const STHash256 *cf=dynamic_cast<const STHash256 *>(rf);
+	if(!cf) throw std::runtime_error("Wrong field type");
+	return cf->getValue();
+}
+
+std::vector<unsigned char> STObject::getValueFieldVL(SOE_Field field) const
+{
+	const SerializedType* rf=peekAtPField(field);
+	if(!rf) throw std::runtime_error("Field not found");
+	SerializedTypeID id=rf->getType();
+	if(id==STI_OBJECT) return std::vector<unsigned char>(); // optional field not present
+	const STVariableLength *cf=dynamic_cast<const STVariableLength *>(rf);
+	if(!cf) throw std::runtime_error("Wrong field type");
+	return cf->getValue();
+}
+
+std::vector<TaggedListItem> STObject::getValueFieldTL(SOE_Field field) const
+{
+	const SerializedType* rf=peekAtPField(field);
+	if(!rf) throw std::runtime_error("Field not found");
+	SerializedTypeID id=rf->getType();
+	if(id==STI_OBJECT) return std::vector<TaggedListItem>(); // optional field not present
+	const STTaggedList *cf=dynamic_cast<const STTaggedList *>(rf);
+	if(!cf) throw std::runtime_error("Wrong field type");
+	return cf->getValue();
+}
+
+void STObject::setValueFieldU8(SOE_Field field, unsigned char v)
+{
+	SerializedType* rf=getPField(field);
+	if(!rf) throw std::runtime_error("Field not found");
+	SerializedTypeID id=rf->getType();
+	if(id==STI_OBJECT)
+	{
+		makeFieldPresent(field);
+		rf=getPField(field);
+		id=rf->getType();
+	}
+	STUInt8* cf=dynamic_cast<STUInt8*>(rf);
+	if(!cf) throw(std::runtime_error("Wrong field type"));
+	cf->setValue(v);
+}
+
+void STObject::setValueFieldU16(SOE_Field field, uint16 v)
+{
+	SerializedType* rf=getPField(field);
+	if(!rf) throw std::runtime_error("Field not found");
+	SerializedTypeID id=rf->getType();
+	if(id==STI_OBJECT)
+	{
+		makeFieldPresent(field);
+		rf=getPField(field);
+		id=rf->getType();
+	}
+	STUInt16* cf=dynamic_cast<STUInt16*>(rf);
+	if(!cf) throw(std::runtime_error("Wrong field type"));
+	cf->setValue(v);
+}
+
+void STObject::setValueFieldU32(SOE_Field field, uint32 v)
+{
+	SerializedType* rf=getPField(field);
+	if(!rf) throw std::runtime_error("Field not found");
+	SerializedTypeID id=rf->getType();
+	if(id==STI_OBJECT)
+	{
+		makeFieldPresent(field);
+		rf=getPField(field);
+		id=rf->getType();
+	}
+	STUInt32* cf=dynamic_cast<STUInt32*>(rf);
+	if(!cf) throw(std::runtime_error("Wrong field type"));
+	cf->setValue(v);
+}
+
+void STObject::setValueFieldU64(SOE_Field field, uint64 v)
+{
+	SerializedType* rf=getPField(field);
+	if(!rf) throw std::runtime_error("Field not found");
+	SerializedTypeID id=rf->getType();
+	if(id==STI_OBJECT)
+	{
+		makeFieldPresent(field);
+		rf=getPField(field);
+		id=rf->getType();
+	}
+	STUInt64* cf=dynamic_cast<STUInt64*>(rf);
+	if(!cf) throw(std::runtime_error("Wrong field type"));
+	cf->setValue(v);
+}
+
+void STObject::setValueFieldH160(SOE_Field field, const uint160& v)
+{
+	SerializedType* rf=getPField(field);
+	if(!rf) throw std::runtime_error("Field not found");
+	SerializedTypeID id=rf->getType();
+	if(id==STI_OBJECT)
+	{
+		makeFieldPresent(field);
+		rf=getPField(field);
+		id=rf->getType();
+	}
+	STHash160* cf=dynamic_cast<STHash160*>(rf);
+	if(!cf) throw(std::runtime_error("Wrong field type"));
+	cf->setValue(v);
+}
+
+void STObject::setValueFieldVL(SOE_Field field, const std::vector<unsigned char>& v)
+{
+	SerializedType* rf=getPField(field);
+	if(!rf) throw std::runtime_error("Field not found");
+	SerializedTypeID id=rf->getType();
+	if(id==STI_OBJECT)
+	{
+		makeFieldPresent(field);
+		rf=getPField(field);
+		id=rf->getType();
+	}
+	STVariableLength* cf=dynamic_cast<STVariableLength*>(rf);
+	if(!cf) throw(std::runtime_error("Wrong field type"));
+	cf->setValue(v);
+}
+
+void STObject::setValueFieldTL(SOE_Field field, const std::vector<TaggedListItem>& v)
+{
+	SerializedType* rf=getPField(field);
+	if(!rf) throw std::runtime_error("Field not found");
+	SerializedTypeID id=rf->getType();
+	if(id==STI_OBJECT)
+	{
+		makeFieldPresent(field);
+		rf=getPField(field);
+		id=rf->getType();
+	}
+	STTaggedList* cf=dynamic_cast<STTaggedList*>(rf);
+	if(!cf) throw(std::runtime_error("Wrong field type"));
+	cf->setValue(v);
+}
+
+Json::Value STObject::getJson(int options) const
+{
+	Json::Value ret(Json::objectValue);
+	int index=1;
+	for(boost::ptr_vector<SerializedType>::const_iterator it=mData.begin(), end=mData.end(); it!=end; ++it, ++index)
+	{
+		if(it->getType()!=STI_NOTPRESENT)
+		{
+			if(it->getName()==NULL)
+				ret[boost::lexical_cast<std::string>(index)]=it->getText();
+			else ret[it->getName()]=it->getText();
+		}
+	}
+	return ret;
+}
diff --git a/src/SerializedObject.h b/src/SerializedObject.h
index a0f8c3413..10f4585b7 100644
--- a/src/SerializedObject.h
+++ b/src/SerializedObject.h
@@ -5,6 +5,8 @@
 
 #include <boost/ptr_container/ptr_vector.hpp>
 
+#include "../json/value.h"
+
 #include "SerializedTypes.h"
 
 enum SOE_Type
@@ -12,42 +14,101 @@ enum SOE_Type
 	SOE_NEVER=-1, SOE_REQUIRED=0, SOE_FLAGS, SOE_IFFLAG=1, SOE_IFNFLAG=2
 };
 
+enum SOE_Field
+{
+	sfInvalid=-1,
+	sfGeneric=0,
+
+	// common fields
+	sfFlags, sfExtensions, sfTargetLedger, sfSourceTag, sfIdentifier,
+	sfDestination, sfTarget, sfAmount, sfCurrency,
+	sfAmountIn, sfAmountOut, sfCurrencyIn, sfCurrencyOut,
+	sfInvoiceID,
+	sfExpireLedger
+};
+
 struct SOElement
 { // An element in the description of a serialized object
+	SOE_Field e_field;
 	const char *e_name;
 	SerializedTypeID e_id;
 	SOE_Type e_type;
 	int e_flags;
 };
 
-class STUObject : public SerializedType
+class STObject : public SerializedType
 {
 protected:
-	boost::ptr_vector<SerializedType> data;
-	std::vector<SOElement*> type;
+	int mFlagIdx; // the offset to the flags object, -1 if none
+	boost::ptr_vector<SerializedType> mData;
+	std::vector<SOElement*> mType;
+
+	static SerializedType* makeDefaultObject(SerializedTypeID id, const char *name);
+	static SerializedType* makeDeserializedObject(SerializedTypeID id, const char *name, SerializerIterator&);
 
 public:
-	STUObject(const char *n=NULL) : SerializedType(n) { ; }
-	STUObject(SOElement *t, const char *n=NULL);
-	STUObject(SOElement *t, SerializerIterator& u, const char *n=NULL);
-	virtual ~STUObject() { ; }
+	STObject(const char *n=NULL) : SerializedType(n), mFlagIdx(-1) { ; }
+	STObject(SOElement *t, const char *n=NULL);
+	STObject(SOElement *t, SerializerIterator& u, const char *n=NULL);
+	virtual ~STObject() { ; }
 
 	int getLength() const;
 	SerializedTypeID getType() const { return STI_OBJECT; }
-	STUObject* duplicate() const { return new STUObject(*this); }
+	STObject* duplicate() const { return new STObject(*this); }
 
 	void add(Serializer& s) const;
 	std::string getFullText() const;
 	std::string getText() const;
+	virtual Json::Value getJson(int options) const;
 
-	void addObject(const SerializedType& t) { data.push_back(t.duplicate()); }
-	void giveObject(SerializedType* t) { data.push_back(t); }
-	const boost::ptr_vector<SerializedType>& peekData() const { return data; }
-	boost::ptr_vector<SerializedType>& peekData() { return data; }
+	int addObject(const SerializedType& t) { mData.push_back(t.duplicate()); return mData.size()-1; }
+	int giveObject(SerializedType* t) { mData.push_back(t); return mData.size()-1; }
+	const boost::ptr_vector<SerializedType>& peekData() const { return mData; }
+	boost::ptr_vector<SerializedType>& peekData() { return mData; }
 
-	int getCount() const { return data.size(); }
-	const SerializedType& peekAt(int offset) const { return data[offset]; }
-	SerializedType& getAt(int offset) { return data[offset]; }
+	int getCount() const { return mData.size(); }
+
+	bool setFlag(int);
+	bool clearFlag(int);
+	int getFlag() const;
+
+	const SerializedType& peekAtIndex(int offset) const { return mData[offset]; }
+	SerializedType& getIndex(int offset) { return mData[offset]; }
+	const SerializedType* peekAtPIndex(int offset) const { return &(mData[offset]); }
+	SerializedType* getPIndex(int offset) { return &(mData[offset]); }
+
+	int getFieldIndex(SOE_Field field) const;
+
+	const SerializedType& peekAtField(SOE_Field field) const;
+	SerializedType& getField(SOE_Field field);
+	const SerializedType* peekAtPField(SOE_Field field) const;
+	SerializedType* getPField(SOE_Field field);
+	const SOElement* getFieldType(SOE_Field field) const;
+
+	// these throw if the field type doesn't match, or return default values if the
+	// field is optional but not present
+	std::string getFieldString(SOE_Field field) const;
+	unsigned char getValueFieldU8(SOE_Field field) const;
+	uint16 getValueFieldU16(SOE_Field field) const;
+	uint32 getValueFieldU32(SOE_Field field) const;
+	uint64 getValueFieldU64(SOE_Field field) const;
+	uint160 getValueFieldH160(SOE_Field field) const;
+	uint256 getValueFieldH256(SOE_Field field) const;
+	std::vector<unsigned char> getValueFieldVL(SOE_Field field) const;
+	std::vector<TaggedListItem> getValueFieldTL(SOE_Field field) const;
+
+	void setValueFieldU8(SOE_Field field, unsigned char);
+	void setValueFieldU16(SOE_Field field, uint16);
+	void setValueFieldU32(SOE_Field field, uint32);
+	void setValueFieldU64(SOE_Field field, uint64);
+	void setValueFieldH160(SOE_Field field, const uint160&);
+	void setValueFieldH256(SOE_Field field, const uint256&);
+	void setValueFieldVL(SOE_Field field, const std::vector<unsigned char>&);
+	void setValueFieldTL(SOE_Field field, const std::vector<TaggedListItem>&);
+
+	bool isFieldPresent(SOE_Field field) const;
+	void makeFieldPresent(SOE_Field field);
+	void makeFieldAbsent(SOE_Field field);
 };
 
 
diff --git a/src/SerializedTransaction.cpp b/src/SerializedTransaction.cpp
index ce7d97f29..b88472d55 100644
--- a/src/SerializedTransaction.cpp
+++ b/src/SerializedTransaction.cpp
@@ -7,15 +7,18 @@ SerializedTransaction::SerializedTransaction(TransactionType type)
 	if(mFormat==NULL) throw(std::runtime_error("invalid transaction type"));
 
 	mMiddleTxn.giveObject(new STUInt32("Magic", TransactionMagic));
-	mMiddleTxn.giveObject(new STVariableLength("Signature")); // signature
+	mMiddleTxn.giveObject(new STVariableLength("SigningAccount"));
+	mMiddleTxn.giveObject(new STUInt32("Sequence"));
 	mMiddleTxn.giveObject(new STUInt8("Type", static_cast<unsigned char>(type)));
+	mMiddleTxn.giveObject(new STUInt64("Fee"));
 
-	mInnerTxn=STUObject(mFormat->elements, "InnerTransaction");
+	mInnerTxn=STObject(mFormat->elements, "InnerTransaction");
 }
 
 SerializedTransaction::SerializedTransaction(SerializerIterator& sit, int length)
 {
-	if(length==0) length=sit.get32();
+	if(length==-1) length=sit.getBytesLeft();
+	else if(length==0) length=sit.get32();
 	if( (length<TransactionMinLen) || (length>TransactionMaxLen) )
 		throw(std::runtime_error("Transaction length invalid"));
 
@@ -25,14 +28,16 @@ SerializedTransaction::SerializedTransaction(SerializerIterator& sit, int length
 		throw(std::runtime_error("Transaction has invalid magic"));
 
 	mMiddleTxn.giveObject(new STUInt32("Magic", TransactionMagic));
-	mMiddleTxn.giveObject(new STVariableLength("Signature", sit.getVL()));
+	mMiddleTxn.giveObject(new STVariableLength("SigningAccount", sit.getVL()));
+	mMiddleTxn.giveObject(new STUInt32("Sequence", sit.get32()));
 
 	int type=sit.get32();
 	mMiddleTxn.giveObject(new STUInt32("Type", type));
 	mFormat=getFormat(static_cast<TransactionType>(type));
 	if(!mFormat) throw(std::runtime_error("Transaction has invalid type"));
+	mMiddleTxn.giveObject(new STUInt64("Fee", sit.get64()));
 
-	mInnerTxn=STUObject(mFormat->elements, sit, "InnerTransaction");
+	mInnerTxn=STObject(mFormat->elements, sit, "InnerTransaction");
 }
 
 int SerializedTransaction::getLength() const
@@ -41,8 +46,10 @@ int SerializedTransaction::getLength() const
 }
 
 std::string SerializedTransaction::getFullText() const
-{ // WRITEME: Add transaction ID
-	std::string ret="{";
+{
+	std::string ret="\"";
+	ret+=getTransactionID().GetHex();
+	ret+="\" = {";
 	ret+=mSignature.getFullText();
 	ret+=mMiddleTxn.getFullText();
 	ret+=mInnerTxn.getFullText();
@@ -56,9 +63,176 @@ std::string SerializedTransaction::getText() const
 	ret+=mSignature.getText();
 	ret+=mMiddleTxn.getText();
 	ret+=mInnerTxn.getText();
+	ret+="}";
 	return ret;
 }
 
-void SerializedTransaction::add(Serializer& s) const
+int SerializedTransaction::getTransaction(Serializer& s, bool include_length) const
 {
+	int l=getLength();
+	if(include_length) s.add32(l);
+	mSignature.add(s);
+	mMiddleTxn.add(s);
+	mInnerTxn.add(s);
+	return l;
+}
+
+uint256 SerializedTransaction::getSigningHash() const
+{
+	Serializer s;
+	mMiddleTxn.add(s);
+	mInnerTxn.add(s);
+	return s.getSHA512Half();
+}
+
+uint256 SerializedTransaction::getTransactionID() const
+{ // perhaps we should cache this
+	Serializer s;
+	mSignature.add(s);
+	mMiddleTxn.add(s);
+	mInnerTxn.add(s);
+	return s.getSHA512Half();
+}
+
+std::vector<unsigned char> SerializedTransaction::getSignature() const
+{
+	return mSignature.getValue();
+}
+
+const std::vector<unsigned char>& SerializedTransaction::peekSignature() const
+{
+	return mSignature.peekValue();
+}
+
+bool SerializedTransaction::sign(CKey& key)
+{
+	return key.Sign(getSigningHash(), mSignature.peekValue());
+}
+
+bool SerializedTransaction::checkSign(const CKey& key) const
+{
+	return key.Verify(getSigningHash(), mSignature.getValue());
+}
+
+void SerializedTransaction::setSignature(const std::vector<unsigned char>& sig)
+{
+	mSignature.setValue(sig);
+}
+
+uint32 SerializedTransaction::getVersion() const
+{
+	const STUInt32* v=dynamic_cast<const STUInt32*>(mMiddleTxn.peekAtPIndex(TransactionIVersion));
+	if(!v) throw(std::runtime_error("corrupt transaction"));
+	return v->getValue();
+}
+
+void SerializedTransaction::setVersion(uint32 ver)
+{
+	STUInt32* v=dynamic_cast<STUInt32*>(mMiddleTxn.getPIndex(TransactionIVersion));
+	if(!v) throw(std::runtime_error("corrupt transaction"));
+	v->setValue(ver);
+}
+
+uint64 SerializedTransaction::getTransactionFee() const
+{
+	const STUInt64* v=dynamic_cast<const STUInt64*>(mMiddleTxn.peekAtPIndex(TransactionIFee));
+	if(!v) throw(std::runtime_error("corrupt transaction"));
+	return v->getValue();
+}
+
+void SerializedTransaction::setTransactionFee(uint64 fee)
+{
+	STUInt64* v=dynamic_cast<STUInt64*>(mMiddleTxn.getPIndex(TransactionIFee));
+	if(!v) throw(std::runtime_error("corrupt transaction"));
+	v->setValue(fee);
+}
+
+uint32 SerializedTransaction::getSequence() const
+{
+	const STUInt32* v=dynamic_cast<const STUInt32*>(mMiddleTxn.peekAtPIndex(TransactionISequence));
+	if(!v) throw(std::runtime_error("corrupt transaction"));
+	return v->getValue();
+}
+
+void SerializedTransaction::setSequence(uint32 seq)
+{
+	STUInt32* v=dynamic_cast<STUInt32*>(mMiddleTxn.getPIndex(TransactionISequence));
+	if(!v) throw(std::runtime_error("corrupt transaction"));
+	v->setValue(seq);
+}
+
+std::vector<unsigned char> SerializedTransaction::getSigningAccount() const
+{
+	const STVariableLength* v=
+		dynamic_cast<const STVariableLength*>(mMiddleTxn.peekAtPIndex(TransactionISigningAccount));
+	if(!v) throw(std::runtime_error("corrupt transaction"));
+	return v->getValue();
+}
+
+const std::vector<unsigned char>& SerializedTransaction::peekSigningAccount() const
+{
+	const STVariableLength* v=
+		dynamic_cast<const STVariableLength*>(mMiddleTxn.peekAtPIndex(TransactionISigningAccount));
+	if(!v) throw(std::runtime_error("corrupt transaction"));
+	return v->peekValue();
+}
+
+std::vector<unsigned char>& SerializedTransaction::peekSigningAccount()
+{
+	STVariableLength* v=dynamic_cast<STVariableLength*>(mMiddleTxn.getPIndex(TransactionISigningAccount));
+	if(!v) throw(std::runtime_error("corrupt transaction"));
+	return v->peekValue();
+}
+
+void SerializedTransaction::setSigningAccount(const std::vector<unsigned char>& s)
+{
+	STVariableLength* v=dynamic_cast<STVariableLength*>(mMiddleTxn.getPIndex(TransactionISigningAccount));
+	if(!v) throw(std::runtime_error("corrupt transaction"));
+	v->setValue(s);
+}
+
+int SerializedTransaction::getITFieldIndex(SOE_Field field) const
+{
+	return mInnerTxn.getFieldIndex(field);
+}
+
+int SerializedTransaction::getITFieldCount() const
+{
+	return mInnerTxn.getCount();
+}
+
+bool SerializedTransaction::getITFieldPresent(SOE_Field field) const
+{
+	return mInnerTxn.isFieldPresent(field);
+}
+
+const SerializedType& SerializedTransaction::peekITField(SOE_Field field)
+{
+	return mInnerTxn.peekAtField(field);
+}
+
+SerializedType& SerializedTransaction::getITField(SOE_Field field)
+{
+	return mInnerTxn.getField(field);
+}
+
+void SerializedTransaction::makeITFieldPresent(SOE_Field field)
+{
+	return mInnerTxn.makeFieldPresent(field);
+}
+
+void SerializedTransaction::makeITFieldAbsent(SOE_Field field)
+{
+	return mInnerTxn.makeFieldAbsent(field);
+}
+
+Json::Value SerializedTransaction::getJson(int options) const
+{
+	Json::Value ret(Json::objectValue);
+	ret["Type"]=mFormat->t_name;
+	ret["ID"]=getTransactionID().GetHex();
+	ret["Signature"]=mSignature.getText();
+	ret["Middle"]=mMiddleTxn.getJson(options);
+	ret["Inner"]=mInnerTxn.getJson(options);
+	return ret;
 }
diff --git a/src/SerializedTransaction.h b/src/SerializedTransaction.h
index d5cc95e2b..644634d8f 100644
--- a/src/SerializedTransaction.h
+++ b/src/SerializedTransaction.h
@@ -3,41 +3,52 @@
 
 #include <vector>
 
+#include <boost/shared_ptr.hpp>
+
 #include "uint256.h"
 #include "SerializedObject.h"
 #include "TransactionFormats.h"
 
-class SerializedTransaction : public STUObject
+class SerializedTransaction : public STObject
 {
+public:
+	typedef boost::shared_ptr<SerializedTransaction> pointer;
+
 protected:
 	TransactionType type;
 	STVariableLength mSignature;
-	STUObject mMiddleTxn, mInnerTxn;
+	STObject mMiddleTxn, mInnerTxn;
 	TransactionFormat* mFormat;
 
 public:
-	SerializedTransaction(SerializerIterator&, int length);
+	SerializedTransaction(SerializerIterator& sit, int length); // -1=all remaining, 0=get from sit
 	SerializedTransaction(TransactionType type);
 
-	// STUObject functions
+	// STObject functions
 	int getLength() const;
 	SerializedTypeID getType() const { return STI_TRANSACTION; }
 	SerializedTransaction* duplicate() const { return new SerializedTransaction(*this); }
 	std::string getFullText() const;
 	std::string getText() const;
-	void add(Serializer& s) const;
+	void add(Serializer& s) const { getTransaction(s, true); }
 
 	// outer transaction functions / signature functions
 	std::vector<unsigned char> getSignature() const;
+	const std::vector<unsigned char>& peekSignature() const;
 	void setSignature(const std::vector<unsigned char>& s);
 	uint256 getSigningHash() const;
 		
 	// middle transaction functions
 	uint32 getVersion() const;
 	void setVersion(uint32);
-	int getTransactionType() const;
+	TransactionType getTxnType() const { return type; }
 	uint64 getTransactionFee() const;
 	void setTransactionFee(uint64);
+	std::vector<unsigned char> getSigningAccount() const;
+	const std::vector<unsigned char>& peekSigningAccount() const;
+	std::vector<unsigned char>& peekSigningAccount();
+	void setSigningAccount(const std::vector<unsigned char>& s);
+	std::string getTransactionType() const { return mFormat->t_name; }
 
 	// inner transaction functions
 	uint16 getFlags() const;
@@ -49,15 +60,45 @@ public:
 	void setSequence(uint32);
 
 	// inner transaction field functions
-	int getITFieldIndex(const char *) const;
+	int getITFieldIndex(SOE_Field field) const;
 	int getITFieldCount() const;
-	bool getITFieldPresent(int index) const;
-	const SerializedType& peekITField(int index);
-	SerializedType& getITField(int index);
-	void makeITFieldPresent(int index);
+	const SerializedType& peekITField(SOE_Field field);
+	SerializedType& getITField(SOE_Field field);
+
+	// inner transaction field value functions
+	std::string getITFieldString(SOE_Field field) const { return mInnerTxn.getFieldString(field); }
+	unsigned char getITFieldU8(SOE_Field field) const { return mInnerTxn.getValueFieldU8(field); }
+	uint16 getITFieldU16(SOE_Field field) const { return mInnerTxn.getValueFieldU16(field); }
+	uint32 getITFieldU32(SOE_Field field) const { return mInnerTxn.getValueFieldU32(field); }
+	uint64 getITFieldU64(SOE_Field field) const { return mInnerTxn.getValueFieldU64(field); }
+	uint160 getITFieldH160(SOE_Field field) const { return mInnerTxn.getValueFieldH160(field); }
+	uint256 getITFieldH256(SOE_Field field) const { return mInnerTxn.getValueFieldH256(field); }
+	std::vector<unsigned char> getITFieldVL(SOE_Field field) const { return mInnerTxn.getValueFieldVL(field); }
+	std::vector<TaggedListItem> getITFieldTL(SOE_Field field) const { return mInnerTxn.getValueFieldTL(field); }
+	void setITFieldU8(SOE_Field field, unsigned char v) { return mInnerTxn.setValueFieldU8(field, v); }
+	void setITFieldU16(SOE_Field field, uint16 v) { return mInnerTxn.setValueFieldU16(field, v); }
+	void setITFieldU32(SOE_Field field, uint32 v) { return mInnerTxn.setValueFieldU32(field, v); }
+	void setITFieldU64(SOE_Field field, uint32 v) { return mInnerTxn.setValueFieldU64(field, v); }
+	void setITFieldH160(SOE_Field field, const uint160& v) { return mInnerTxn.setValueFieldH160(field, v); }
+	void setITFieldH256(SOE_Field field, const uint256& v) { return mInnerTxn.setValueFieldH256(field, v); }
+	void setITFieldVL(SOE_Field field, const std::vector<unsigned char>& v)
+		{ return mInnerTxn.setValueFieldVL(field, v); }
+	void setITFieldTL(SOE_Field field, const std::vector<TaggedListItem>& v)
+		{ return mInnerTxn.setValueFieldTL(field, v); }
+
+	// optional field functions
+	bool getITFieldPresent(SOE_Field field) const;
+	void makeITFieldPresent(SOE_Field field);
+	void makeITFieldAbsent(SOE_Field field);
 
 	// whole transaction functions
-	int getTransaction(Serializer& s, bool include_length);
+	int getTransaction(Serializer& s, bool include_length) const;
+	uint256 getTransactionID() const;
+
+	virtual Json::Value getJson(int options) const;
+
+	bool sign(CKey& key);
+	bool checkSign(const CKey& key) const;
 };
 
 #endif
diff --git a/src/SerializedTypes.cpp b/src/SerializedTypes.cpp
index 9f94631b7..885886adf 100644
--- a/src/SerializedTypes.cpp
+++ b/src/SerializedTypes.cpp
@@ -4,6 +4,7 @@
 #include "SerializedTypes.h"
 #include "SerializedObject.h"
 #include "TransactionFormats.h"
+#include "NewcoinAddress.h"
 
 std::string SerializedType::getFullText() const
 {
@@ -104,6 +105,44 @@ int STVariableLength::getLength() const
 	return Serializer::encodeLengthLength(value.size()) + value.size();
 }
 
+std::string STAccount::getText() const
+{
+	uint160 u;
+	NewcoinAddress a;
+	if(!getValueH160(u)) return STVariableLength::getText();
+	a.setAccountID(u);
+	return a.humanAccountPublic();
+}
+
+STAccount* STAccount::construct(SerializerIterator& u, const char *name)
+{
+	STAccount *ret=new STAccount(u.getVL());
+	if(!ret->isValueH160())
+	{
+		delete ret;
+		throw(std::runtime_error("invalid account in transaction"));
+	}
+	return ret;
+}
+
+bool STAccount::isValueH160() const
+{
+	return peekValue().size() == (160/8);
+}
+
+void STAccount::setValueH160(const uint160& v)
+{
+	peekValue().empty();
+	peekValue().insert(peekValue().end(), v.begin(), v.end());
+}
+
+bool STAccount::getValueH160(uint160& v) const
+{
+	if(!isValueH160()) return false;
+	memcpy(v.begin(), &(peekValue().front()), 32);
+	return true;
+}
+
 std::string STTaggedList::getText() const
 {
 	std::string ret;
@@ -128,3 +167,4 @@ int STTaggedList::getLength() const
 	return ret;
 }
 
+
diff --git a/src/SerializedTypes.h b/src/SerializedTypes.h
index 8a9fced78..824d170fa 100644
--- a/src/SerializedTypes.h
+++ b/src/SerializedTypes.h
@@ -17,7 +17,7 @@ enum SerializedTypeID
 	STI_HASH160=6, STI_HASH256=7, STI_VL=8, STI_TL=9,
 
 	// high level types
-	STI_TRANSACTION=10
+	STI_ACCOUNT=10, STI_TRANSACTION=10
 };
 
 class SerializedType
@@ -32,7 +32,7 @@ public:
 	virtual ~SerializedType() { ; }
 
 	void setName(const char *n) { name=n; }
-	const char *getName() { return name; }
+	const char *getName() const { return name; }
 
 	virtual int getLength() const { return 0; }
 	virtual SerializedTypeID getType() const { return STI_NOTPRESENT; }
@@ -61,9 +61,9 @@ public:
 
 	int getLength() const { return 1; }
 	SerializedTypeID getType() const { return STI_UINT8; }
-	STUInt8 *duplicate() const { return new STUInt8(name, value); }
+	STUInt8* duplicate() const { return new STUInt8(name, value); }
 	std::string getText() const;
-	virtual void add(Serializer& s) const { s.add8(value); }
+	void add(Serializer& s) const { s.add8(value); }
 
 	unsigned char getValue() const { return value; }
 	void setValue(unsigned char v) { value=v; }
@@ -85,9 +85,9 @@ public:
 
 	int getLength() const { return 2; }
 	SerializedTypeID getType() const { return STI_UINT16; }
-	STUInt16 *duplicate() const { return new STUInt16(name, value); }
+	STUInt16* duplicate() const { return new STUInt16(name, value); }
 	std::string getText() const;
-	virtual void add(Serializer& s) const { s.add16(value); }
+	void add(Serializer& s) const { s.add16(value); }
 
 	uint16 getValue() const { return value; }
 	void setValue(uint16 v) { value=v; }
@@ -109,9 +109,9 @@ public:
 
 	int getLength() const { return 4; }
 	SerializedTypeID getType() const { return STI_UINT32; }
-	STUInt32 *duplicate() const { return new STUInt32(name, value); }
+	STUInt32* duplicate() const { return new STUInt32(name, value); }
 	std::string getText() const;
-	virtual void add(Serializer& s) const { s.add32(value); }
+	void add(Serializer& s) const { s.add32(value); }
 
 	uint32 getValue() const { return value; }
 	void setValue(uint32 v) { value=v; }
@@ -133,9 +133,9 @@ public:
 
 	int getLength() const { return 8; }
 	SerializedTypeID getType() const { return STI_UINT64; }
-	STUInt64 *duplicate() const { return new STUInt64(name, value); }
+	STUInt64* duplicate() const { return new STUInt64(name, value); }
 	std::string getText() const;
-	virtual void add(Serializer& s) const { s.add64(value); }
+	void add(Serializer& s) const { s.add64(value); }
 
 	uint64 getValue() const { return value; }
 	void setValue(uint64 v) { value=v; }
@@ -158,9 +158,9 @@ public:
 
 	int getLength() const { return 20; }
 	SerializedTypeID getType() const { return STI_HASH160; }
-	STHash160 *duplicate() const { return new STHash160(name, value); }
-	std::string getText() const;
-	virtual void add(Serializer& s) const { s.add160(value); }
+	STHash160* duplicate() const { return new STHash160(name, value); }
+	virtual std::string getText() const;
+	void add(Serializer& s) const { s.add160(value); }
 
 	const uint160& getValue() const { return value; }
 	void setValue(const uint160& v) { value=v; }
@@ -183,9 +183,9 @@ public:
 
 	int getLength() const { return 32; }
 	SerializedTypeID getType() const { return STI_HASH256; }
-	STHash256 *duplicate() const { return new STHash256(name, value); }
+	STHash256* duplicate() const { return new STHash256(name, value); }
 	std::string getText() const;
-	virtual void add(Serializer& s) const { s.add256(value); }
+	void add(Serializer& s) const { s.add256(value); }
 
 	const uint256& getValue() const { return value; }
 	void setValue(const uint256& v) { value=v; }
@@ -208,10 +208,10 @@ public:
 	static STVariableLength* construct(SerializerIterator&, const char *name=NULL);
 
 	int getLength() const;
-	SerializedTypeID getType() const { return STI_VL; }
-	STVariableLength *duplicate() const { return new STVariableLength(name, value); }
-	std::string getText() const;
-	virtual void add(Serializer& s) const { s.addVL(value); }
+	virtual SerializedTypeID getType() const { return STI_VL; }
+	virtual STVariableLength* duplicate() const { return new STVariableLength(name, value); }
+	virtual std::string getText() const;
+	void add(Serializer& s) const { s.addVL(value); }
 
 	const std::vector<unsigned char>& peekValue() const { return value; }
 	std::vector<unsigned char>& peekValue() { return value; }
@@ -222,6 +222,25 @@ public:
 	STVariableLength& operator=(const std::vector<unsigned char>& v) { value=v; return *this; }
 };
 
+class STAccount : public STVariableLength
+{
+public:
+
+	STAccount(const std::vector<unsigned char>& v) : STVariableLength(v) { ; }
+	STAccount(const char *n, const std::vector<unsigned char>& v) : STVariableLength(n, v) { ; }
+	STAccount(const char *n) : STVariableLength(n) { ; }
+	STAccount() { ; }
+	static STAccount* construct(SerializerIterator&, const char *name=NULL);
+
+	SerializedTypeID getType() const { return STI_ACCOUNT; }
+	virtual STAccount* duplicate() const { return new STAccount(name, value); }
+	std::string getText() const;
+
+	void setValueH160(const uint160& v);
+	bool getValueH160(uint160&) const;
+	bool isValueH160() const;
+};
+
 class STTaggedList : public SerializedType
 {
 protected:
@@ -237,9 +256,9 @@ public:
 
 	int getLength() const;
 	SerializedTypeID getType() const { return STI_TL; }
-	STTaggedList *duplicate() const { return new STTaggedList(name, value); }
+	STTaggedList* duplicate() const { return new STTaggedList(name, value); }
 	std::string getText() const;
-	virtual void add(Serializer& s) const { if(s.addTaggedList(value)<0) throw(0); }
+	void add(Serializer& s) const { if(s.addTaggedList(value)<0) throw(0); }
 
 	const std::vector<TaggedListItem>& peekValue() const { return value; }
 	std::vector<TaggedListItem>& peekValue() { return value; }
diff --git a/src/Serializer.cpp b/src/Serializer.cpp
index 24be5f05a..30fbfae9c 100644
--- a/src/Serializer.cpp
+++ b/src/Serializer.cpp
@@ -102,14 +102,14 @@ bool Serializer::get64(uint64& o, int offset) const
 bool Serializer::get160(uint160& o, int offset) const
 {
 	if((offset+20)>mData.size()) return false;
-	memcpy(&o, &(mData.front())+offset, 20);
+	memcpy(o.begin(), &(mData.front())+offset, 20);
 	return true;
 }
 
 bool Serializer::get256(uint256& o, int offset) const
 {
 	if((offset+32)>mData.size()) return false;
-	memcpy(&o, &(mData.front())+offset, 32);
+	memcpy(o.begin(), &(mData.front())+offset, 32);
 	return true;
 }
 
diff --git a/src/Transaction.cpp b/src/Transaction.cpp
index 01f27b37b..bd54e6b1c 100644
--- a/src/Transaction.cpp
+++ b/src/Transaction.cpp
@@ -2,45 +2,45 @@
 
 #include "boost/lexical_cast.hpp"
 #include "boost/make_shared.hpp"
+#include "boost/ref.hpp"
 
 #include "Application.h"
 #include "Transaction.h"
 #include "Wallet.h"
 #include "BitcoinUtil.h"
-#include "BinaryFormats.h"
-
-using namespace std;
-
-Transaction::Transaction() : mTransactionID(0), mAccountFrom(), mAccountTo(),
-	mAmount(0), mFee(0), mFromAccountSeq(0), mSourceLedger(0), mIdent(0),
-	mInLedger(0), mStatus(INVALID)
-{
-}
+#include "Serializer.h"
+#include "SerializedTransaction.h"
 
 Transaction::Transaction(LocalAccount::pointer fromLocalAccount, const NewcoinAddress& toAccount, uint64 amount,
-	uint32 ident, uint32 ledger) :
-		mAccountTo(toAccount), mAmount(amount), mSourceLedger(ledger), mIdent(ident), mInLedger(0), mStatus(NEW)
+	uint32 ident, uint32 ledger) : mInLedger(0), mStatus(NEW)
 {
 	mAccountFrom=fromLocalAccount->getAddress();
+	mAccountTo=toAccount;
+
+	mTransaction=boost::make_shared<SerializedTransaction>(ttMAKE_PAYMENT);
+
 	mFromPubKey=fromLocalAccount->getPublicKey();
 	assert(mFromPubKey);
-	mFromAccountSeq=fromLocalAccount->getTxnSeq();
+	mTransaction->setSigningAccount(mFromPubKey->GetPubKey());
 
-#ifdef DEBUG
-		std::cerr << "Construct local Txn" << std::endl;
-		std::cerr << "ledger(" << ledger << "), fromseq(" << mFromAccountSeq << ")" << std::endl;
-#endif
+	mTransaction->setSequence(fromLocalAccount->getTxnSeq());
+	assert(mTransaction->getSequence()!=0);
+	mTransaction->setTransactionFee(100); // for now
 
-	if(!mFromAccountSeq)
+	mTransaction->setITFieldVL(sfDestination, toAccount.getAccountPublic());
+	mTransaction->setITFieldU64(sfAmount, amount);
+	if(ledger!=0)
 	{
-#ifdef DEBUG
-		std::cerr << "Bad source account sequence" << std::endl;
-		assert(false);
-#endif
-		mStatus=INCOMPLETE;
+		mTransaction->makeITFieldPresent(sfTargetLedger);
+		mTransaction->setITFieldU32(sfTargetLedger, ledger);
 	}
+	if(ident!=0)
+	{
+		mTransaction->makeITFieldPresent(sfSourceTag);
+		mTransaction->setITFieldU32(sfSourceTag, ident);
+	}
+
 	assert(mFromPubKey);
-	updateFee();
 	if(!sign(fromLocalAccount))
 	{
 #ifdef DEBUG
@@ -50,22 +50,22 @@ Transaction::Transaction(LocalAccount::pointer fromLocalAccount, const NewcoinAd
 	}
 }
 
-Transaction::Transaction(const std::vector<unsigned char> &t, bool validate) : mStatus(INVALID)
+Transaction::Transaction(SerializedTransaction::pointer sit, bool validate) : mStatus(INVALID), mTransaction(sit)
 {
 	uint160	toAccountID;
 	uint160	fromAccountID;
-
-	Serializer s(t);
-	if(s.getLength()<BTxSize) { assert(false); return; }
-	if(!s.get160(toAccountID, BTxPDestAcct)) { assert(false); return; }
-	if(!s.get64(mAmount, BTxPAmount)) { assert(false); return; }
-	if(!s.get32(mFromAccountSeq, BTxPSASeq)) { assert(false); return; }
-	if(!s.get32(mSourceLedger, BTxPSLIdx)) { assert(false); return; }
-	if(!s.get32(mIdent, BTxPSTag)) { assert(false); return; }
-	if(!s.getRaw(mSignature, BTxPSig, BTxLSig)) { assert(false); return; }
-
 	std::vector<unsigned char> pubKey;
-	if(!s.getRaw(pubKey, BTxPSPubK, BTxLSPubK)) { assert(false); return; }
+
+	try
+	{
+		toAccountID=mTransaction->getITFieldH160(sfDestination);
+		pubKey=mTransaction->getSigningAccount();
+		mTransactionID=mTransaction->getTransactionID();
+	}
+	catch(...)
+	{
+		return;
+	}
 
 	mAccountTo.setAccountID(toAccountID);
 	mAccountFrom.setAccountID(fromAccountID);
@@ -75,13 +75,62 @@ Transaction::Transaction(const std::vector<unsigned char> &t, bool validate) : m
 	mAccountFrom.setAccountPublic(pubKey);
 	mFromPubKey=theApp->getPubKeyCache().store(mAccountFrom, mFromPubKey);
 
-	updateID();
-	updateFee();
-
 	if(!validate || checkSign())
 		mStatus=NEW;
 }
 
+Transaction::Transaction(const std::vector<unsigned char>& raw, bool validate) : mStatus(INVALID)
+{
+	uint160	toAccountID;
+	uint160	fromAccountID;
+	std::vector<unsigned char> pubKey;
+
+	try
+	{
+		Serializer s(raw);
+		SerializerIterator sit(s);
+		mTransaction=boost::make_shared<SerializedTransaction>(boost::ref(sit), -1);
+
+		mFromPubKey=boost::make_shared<CKey>();
+		if(!mFromPubKey->SetPubKey(pubKey)) return;
+		mAccountFrom.setAccountPublic(pubKey);
+		mFromPubKey=theApp->getPubKeyCache().store(mAccountFrom, mFromPubKey);
+		if(!mFromPubKey->SetPubKey(pubKey)) return;
+		mAccountFrom.setAccountPublic(pubKey);
+		mFromPubKey=theApp->getPubKeyCache().store(mAccountFrom, mFromPubKey);
+	}
+	catch(...)
+	{
+		return;
+	}
+	if(!validate || checkSign())
+		mStatus=NEW;
+}
+
+Transaction::Transaction(const NewcoinAddress& fromID, const NewcoinAddress& toID,
+	CKey::pointer pubKey, uint64 amount, uint64 fee, uint32 fromSeq, uint32 fromLedger,
+	uint32 ident, const std::vector<unsigned char>& signature, uint32 ledgerSeq, TransStatus st) :
+	mAccountFrom(fromID), mAccountTo(toID), mFromPubKey(pubKey), mInLedger(ledgerSeq), mStatus(st)
+{
+	mTransaction=boost::make_shared<SerializedTransaction>(ttMAKE_PAYMENT);
+	mTransaction->setSignature(signature);
+	mTransaction->setTransactionFee(fee);
+	mTransaction->setSigningAccount(pubKey->GetPubKey());
+	mTransaction->setSequence(fromSeq);
+	if(fromLedger!=0)
+	{
+		mTransaction->makeITFieldPresent(sfTargetLedger);
+		mTransaction->setITFieldU32(sfTargetLedger, fromLedger);
+	}
+	if(ident!=0)
+	{
+		mTransaction->makeITFieldPresent(sfSourceTag);
+		mTransaction->setITFieldU32(sfSourceTag, ident);
+	}
+	mTransaction->setValueFieldU64(sfAmount, amount);
+	updateID();
+}
+
 bool Transaction::sign(LocalAccount::pointer fromLocalAccount)
 {
 	CKey::pointer privateKey=fromLocalAccount->getPrivateKey();
@@ -93,10 +142,10 @@ bool Transaction::sign(LocalAccount::pointer fromLocalAccount)
 		return false;
 	}
 
-	if( (mAmount==0) || (mSourceLedger==0) || !mAccountTo.IsValid() )
+	if( (mTransaction->getITFieldU64(sfAmount)==0) || !mAccountTo.IsValid() )
 	{
 #ifdef DEBUG
-		std::cerr << "Bad amount, source ledger, or destination" << std::endl;
+		std::cerr << "Bad amount or destination" << std::endl;
 #endif
 		assert(false);
 		return false;
@@ -110,7 +159,8 @@ bool Transaction::sign(LocalAccount::pointer fromLocalAccount)
 		assert(false);
 		return false;
 	}
-	if(!getRaw(true)->makeSignature(mSignature, *privateKey))
+
+	if(!getSTransaction()->sign(*privateKey))
 	{
 #ifdef DEBUG
 		std::cerr << "Failed to make signature" << std::endl;
@@ -118,50 +168,14 @@ bool Transaction::sign(LocalAccount::pointer fromLocalAccount)
 		assert(false);
 		return false;
 	}
-	assert(mSignature.size()==72);
 	updateID();
 	return true;
 }
 
-void Transaction::updateFee()
-{ // for now, all transactions have a 1,000 unit fee
-	mFee=1000;
-}
-
 bool Transaction::checkSign() const
 {
 	assert(mFromPubKey);
-	Serializer::pointer signBuf=getRaw(true);
-	return getRaw(true)->checkSignature(mSignature, *mFromPubKey);
-}
-
-Serializer::pointer Transaction::getRaw(bool prefix) const
-{
-	uint160	toAccountID	= mAccountTo.getAccountID();
-
-	Serializer::pointer ret=boost::make_shared<Serializer>(77);
-	if(prefix) ret->add32(0x54584e00u);
-	ret->add160(toAccountID);
-	ret->add64(mAmount);
-	ret->add32(mFromAccountSeq);
-	ret->add32(mSourceLedger);
-	ret->add32(mIdent);
-	ret->addRaw(mFromPubKey->GetPubKey());
-	assert( (prefix&&(ret->getLength()==77)) || (!prefix&&(ret->getLength()==73)) );
-	return ret;
-}
-
-Serializer::pointer Transaction::getSigned() const
-{
-	Serializer::pointer ret(getRaw(false));
-	ret->addRaw(mSignature);
-	assert(ret->getLength()==BTxSize);
-	return ret;
-}
-
-void Transaction::updateID()
-{
-	mTransactionID=getSigned()->getSHA512Half();
+	return mTransaction->checkSign(*mFromPubKey);
 }
 
 void Transaction::setStatus(TransStatus ts, uint32 lseq)
@@ -176,29 +190,26 @@ void Transaction::saveTransaction(Transaction::pointer txn)
 }
 
 bool Transaction::save() const
-{
+{ // This code needs to be fixed to support new-style transactions - FIXME
 	if((mStatus==INVALID)||(mStatus==REMOVED)) return false;
 
 	std::string sql="INSERT INTO Transactions "
-		"(TransID,FromAcct,FromSeq,FromLedger,Identifier,ToAcct,Amount,Fee,FirstSeen,CommitSeq,Status, Signature)"
+		"(TransID,TransType,FromAcct,FromSeq,OtherAcct,Amount,FirstSeen,CommitSeq,Status,RawTxn)"
 		" VALUES ('";
 	sql.append(mTransactionID.GetHex());
 	sql.append("','");
+	sql.append(mTransaction->getTransactionType());
+	sql.append("','");
 	sql.append(mAccountFrom.humanAccountID());
 	sql.append("','");
-	sql.append(boost::lexical_cast<std::string>(mFromAccountSeq));
+	sql.append(boost::lexical_cast<std::string>(mTransaction->getSequence()));
 	sql.append("','");
-	sql.append(boost::lexical_cast<std::string>(mSourceLedger));
+	sql.append(mTransaction->getITFieldString(sfDestination));
 	sql.append("','");
-	sql.append(boost::lexical_cast<std::string>(mIdent));
-	sql.append("','");
-	sql.append(mAccountTo.humanAccountID());
-	sql.append("','");
-	sql.append(boost::lexical_cast<std::string>(mAmount));
-	sql.append("','");
-	sql.append(boost::lexical_cast<std::string>(mFee));
+	sql.append(mTransaction->getITFieldString(sfAmount));
 	sql.append("',now(),'");
-	sql.append(boost::lexical_cast<std::string>(mInLedger)); switch(mStatus)
+	sql.append(boost::lexical_cast<std::string>(mInLedger));
+	switch(mStatus)
 	{
 	 case NEW: sql.append("','N',"); break;
 	 case INCLUDED: sql.append("','A',"); break;
@@ -207,9 +218,13 @@ bool Transaction::save() const
 	 case HELD: sql.append("','H',"); break;
 	 default: sql.append("','U',"); break;
 	}
-	std::string signature;
-	theApp->getTxnDB()->getDB()->escape(&(mSignature.front()), mSignature.size(), signature);
-	sql.append(signature);
+
+	Serializer s;
+	mTransaction->getTransaction(s, false);
+
+	std::string rawTxn;
+	theApp->getTxnDB()->getDB()->escape(static_cast<const unsigned char *>(s.getDataPtr()), s.getLength(), rawTxn);
+	sql.append(rawTxn);
 	sql.append(");");
 	
 	ScopedLock sl(theApp->getTxnDB()->getDBLock());
@@ -218,12 +233,11 @@ bool Transaction::save() const
 }
 
 Transaction::pointer Transaction::transactionFromSQL(const std::string& sql)
-{
-	std::string transID, fromID, toID, status;
-	uint64 amount, fee;
-	uint32 ledgerSeq, fromSeq, fromLedger, ident;
-	std::vector<unsigned char> signature;
-	signature.reserve(78);
+{ // This code needs to be fixed to support new-style transactions - FIXME
+	std::vector<unsigned char> rawTxn;
+	std::string status;
+
+	rawTxn.reserve(2048);
 	if(1)
 	{
 		ScopedLock sl(theApp->getTxnDB()->getDBLock());
@@ -232,29 +246,17 @@ Transaction::pointer Transaction::transactionFromSQL(const std::string& sql)
 		if(!db->executeSQL(sql.c_str(), true) || !db->startIterRows() || !db->getNextRow())
 			return Transaction::pointer();
 
-		db->getStr("TransID", transID);
-		db->getStr("FromID", fromID);
-		fromSeq=db->getBigInt("FromSeq");
-		fromLedger=db->getBigInt("FromLedger");
-		db->getStr("ToID", toID);
-		amount=db->getBigInt("Amount");
-		fee=db->getBigInt("Fee");
-		ledgerSeq=db->getBigInt("CommitSeq");
-		ident=db->getBigInt("Identifier");
 		db->getStr("Status", status);
-		int sigSize=db->getBinary("Signature", &(signature.front()), signature.size());
-		signature.resize(sigSize);
+		int txSize=db->getBinary("RawTxn", &(rawTxn.front()), rawTxn.size());
+		rawTxn.resize(txSize);
+		if(txSize>rawTxn.size()) db->getBinary("RawTxn", &(rawTxn.front()), rawTxn.size());
 		db->endIterRows();
 	}
 
-	uint256 trID;
-	NewcoinAddress frID, tID;
-	trID.SetHex(transID);
-	frID.setAccountID(fromID);
-	tID.setAccountID(toID);
-
-	CKey::pointer pubkey=theApp->getPubKeyCache().locate(frID);
-	if(!pubkey) return Transaction::pointer();
+	Serializer s(rawTxn);
+	SerializerIterator it(s);
+	SerializedTransaction::pointer txn=boost::make_shared<SerializedTransaction>(boost::ref(it), -1);
+	Transaction::pointer tr=boost::make_shared<Transaction>(txn, true);
 
 	TransStatus st(INVALID);
 	switch(status[0])
@@ -265,15 +267,15 @@ Transaction::pointer Transaction::transactionFromSQL(const std::string& sql)
 		case 'D': st=COMMITTED; break;
 		case 'H': st=HELD; break;
 	}
-	
-	return Transaction::pointer(new Transaction(trID, frID, tID, pubkey, amount, fee, fromSeq, fromLedger,
-		ident, signature, ledgerSeq, st));
+	tr->setStatus(st);
+
+	return tr;
 
 }
 
 Transaction::pointer Transaction::load(const uint256& id)
 {
-	std::string sql="SELECT * FROM Transactions WHERE TransID='";
+	std::string sql="SELECT Status,RawTxn FROM Transactions WHERE TransID='";
 	sql.append(id.GetHex());
 	sql.append("';");
 	return transactionFromSQL(sql);
@@ -281,7 +283,7 @@ Transaction::pointer Transaction::load(const uint256& id)
 
 Transaction::pointer Transaction::findFrom(const NewcoinAddress& fromID, uint32 seq)
 {
-	std::string sql="SELECT * FROM Transactions WHERE FromID='";
+	std::string sql="SELECT Status,RawTxn FROM Transactions WHERE FromID='";
 	sql.append(fromID.humanAccountID());
 	sql.append("' AND FromSeq='");
 	sql.append(boost::lexical_cast<std::string>(seq));
@@ -304,6 +306,8 @@ bool Transaction::convertToTransactions(uint32 firstLedgerSeq, uint32 secondLedg
 		Transaction::pointer firstTrans, secondTrans;	
 		if(!!first)
 		{ // transaction in our table
+			Serializer s(first->getData());
+			SerializerIterator sit(s);
 			firstTrans=boost::make_shared<Transaction>(first->getData(), checkFirstTransactions);
 			if( (firstTrans->getStatus()==INVALID) || (firstTrans->getID()!=id) )
 			{
@@ -350,10 +354,7 @@ bool Transaction::isHexTxID(const std::string& txid)
 
 Json::Value Transaction::getJson(bool decorate, bool paid, bool credited) const
 {
-	Json::Value ret(Json::objectValue);
-	ret["TransactionID"]=mTransactionID.GetHex();
-	ret["Amount"]=boost::lexical_cast<std::string>(mAmount);
-	ret["Fee"]=boost::lexical_cast<std::string>(mFee);
+	Json::Value ret(mTransaction->getJson(0));
 	if(mInLedger) ret["InLedger"]=mInLedger;
 
 	switch(mStatus)
@@ -371,11 +372,7 @@ Json::Value Transaction::getJson(bool decorate, bool paid, bool credited) const
 	}
 
 	Json::Value source(Json::objectValue);
-
 	source["AccountID"]=mAccountFrom.humanAccountID();
-	source["AccountSeq"]=mFromAccountSeq;
-	source["Ledger"]=mSourceLedger;
-	if(!!mIdent) source["Identifier"]=mIdent;
 
 	Json::Value destination(Json::objectValue);
 	destination["AccountID"]=mAccountTo.humanAccountID();
@@ -393,4 +390,3 @@ Json::Value Transaction::getJson(bool decorate, bool paid, bool credited) const
 	ret["Destination"]=destination;
 	return ret;
 }
-
diff --git a/src/Transaction.h b/src/Transaction.h
index e3495c943..66c490eed 100644
--- a/src/Transaction.h
+++ b/src/Transaction.h
@@ -16,10 +16,7 @@
 #include "Serializer.h"
 #include "SHAMap.h"
 #include "LocalAccount.h"
-
-/*
-We could have made something that inherited from the protobuf transaction but this seemed simpler
-*/
+#include "SerializedTransaction.h"
 
 enum TransStatus
 {
@@ -40,41 +37,42 @@ public:
 
 	typedef boost::shared_ptr<Transaction> pointer;
 
-	static const uint32 TransSignMagic=0x54584E00; // "TXN"
-
 private:
 	uint256			mTransactionID;
-	NewcoinAddress		mAccountFrom, mAccountTo;
-	uint64			mAmount, mFee;
-	uint32			mFromAccountSeq, mSourceLedger, mIdent;
+	NewcoinAddress	mAccountFrom, mAccountTo;
 	CKey::pointer	mFromPubKey;
-	std::vector<unsigned char> mSignature;
 
 	uint32		mInLedger;
 	TransStatus	mStatus;
 
+	SerializedTransaction::pointer mTransaction;
+
 public:
-	Transaction();
-	Transaction(const std::vector<unsigned char>& rawTransaction, bool validate);
-	Transaction(LocalAccount::pointer fromLocal, const NewcoinAddress& to, uint64 amount, uint32 ident, uint32 ledger);
+	Transaction(const std::vector<unsigned char>&, bool validate);
+	Transaction(SerializedTransaction::pointer st, bool validate);
+
+	Transaction(LocalAccount::pointer fromLocal, const NewcoinAddress& to, uint64 amount,
+		uint32 ident, uint32 ledger);
+
+	Transaction(const NewcoinAddress& fromID, const NewcoinAddress& toID,
+		CKey::pointer pubKey, uint64 amount, uint64 fee, uint32 fromSeq, uint32 fromLedger,
+		uint32 ident, const std::vector<unsigned char>& signature, uint32 ledgerSeq, TransStatus st);
 
 	bool sign(LocalAccount::pointer fromLocalAccount);
 	bool checkSign() const;
-	void updateID();
-	void updateFee();
+	void updateID() { mTransactionID=mTransaction->getTransactionID(); }
 
-	Serializer::pointer getRaw(bool prefix) const;
-	Serializer::pointer getSigned() const;
+	SerializedTransaction::pointer getSTransaction() { return mTransaction; }
 
 	const uint256& getID() const { return mTransactionID; }
 	const NewcoinAddress& getFromAccount() const { return mAccountFrom; }
 	const NewcoinAddress& getToAccount() const { return mAccountTo; }
-	uint64 getAmount() const { return mAmount; }
-	uint64 getFee() const { return mFee; }
-	uint32 getFromAccountSeq() const { return mFromAccountSeq; }
-	uint32 getSourceLedger() const { return mSourceLedger; }
-	uint32 getIdent() const { return mIdent; }
-	const std::vector<unsigned char>& getSignature() const { return mSignature; }
+	uint64 getAmount() const { return mTransaction->getITFieldU64(sfAmount); }
+	uint64 getFee() const { return mTransaction->getTransactionFee(); }
+	uint32 getFromAccountSeq() const { return mTransaction->getSequence(); }
+	uint32 getSourceLedger() const { return mTransaction->getITFieldU32(sfTargetLedger); }
+	uint32 getIdent() const { return mTransaction->getITFieldU32(sfSourceTag); }
+	std::vector<unsigned char> getSignature() const { return mTransaction->getSignature(); }
 	uint32 getLedger() const { return mInLedger; }
 	TransStatus getStatus() const { return mStatus; }
 
@@ -107,12 +105,7 @@ protected:
 	static Transaction::pointer transactionFromSQL(const std::string& statement);
 	Transaction(const uint256& transactionID, const NewcoinAddress& accountFrom, const NewcoinAddress& accountTo,
 		 CKey::pointer key, uint64 amount, uint64 fee, uint32 fromAccountSeq, uint32 sourceLedger,
-		 uint32 ident, const std::vector<unsigned char>& signature, uint32 inLedger, TransStatus status) :
-		 	mTransactionID(transactionID), mAccountFrom(accountFrom), mAccountTo(accountTo),
-		 	mAmount(amount), mFee(fee), mFromAccountSeq(fromAccountSeq), mSourceLedger(sourceLedger),
-			mIdent(ident), mFromPubKey(key), mSignature(signature), mInLedger(inLedger), mStatus(status)
-	{ ; }
-
+		 uint32 ident, const std::vector<unsigned char>& signature, uint32 inLedger, TransStatus status);
 };
 
 #endif
diff --git a/src/TransactionFormats.cpp b/src/TransactionFormats.cpp
index ce11a294d..455b3a9e4 100644
--- a/src/TransactionFormats.cpp
+++ b/src/TransactionFormats.cpp
@@ -1,49 +1,48 @@
 
 #include "TransactionFormats.h"
 
+#define S_FIELD(x) sf##x, #x
+
 TransactionFormat InnerTxnFormats[]=
 {
 	{ "MakePayment", ttMAKE_PAYMENT, {
-		{ "Flags",        STI_UINT16,  SOE_FLAGS,    0 },
-		{ "Sequence", 	  STI_UINT32,  SOE_REQUIRED, 0 },
-		{ "Destination",  STI_ACCOUNT, SOE_REQUIRED, 0 },
-		{ "Amount",       STI_UINT64,  SOE_REQUIRED, 0 },
-		{ "Currency",     STI_HASH160, SOE_IFFLAG,   1 },
-		{ "SourceTag",    STI_UINT32,  SOE_IFFLAG,   2 },
-		{ "TargetLedger", STI_UINT32,  SOE_IFFLAG,   4 },
-		{ "InvoiceID",    STI_HASH256, SOE_IFFLAG,   8 },
-		{ "Extensions",   STI_TL,      SOE_IFFLAG,   32768 },
-		{ NULL,           STI_DONE,    SOE_NEVER,    -1 } }
+		{ S_FIELD(Flags),        STI_UINT16,  SOE_FLAGS,    0 },
+		{ S_FIELD(Destination),  STI_ACCOUNT, SOE_REQUIRED, 0 },
+		{ S_FIELD(Amount),       STI_UINT64,  SOE_REQUIRED, 0 },
+		{ S_FIELD(Currency),     STI_HASH160, SOE_IFFLAG,   1 },
+		{ S_FIELD(SourceTag),    STI_UINT32,  SOE_IFFLAG,   2 },
+		{ S_FIELD(TargetLedger), STI_UINT32,  SOE_IFFLAG,   4 },
+		{ S_FIELD(InvoiceID),    STI_HASH256, SOE_IFFLAG,   8 },
+		{ S_FIELD(Extensions),   STI_TL,      SOE_IFFLAG,   32768 },
+		{ sfInvalid, NULL,       STI_DONE,    SOE_NEVER,    -1 } }
 	},
 	{ "Invoice", ttINVOICE, {
-		{ "Flags",        STI_UINT16,  SOE_FLAGS,    0 },
-		{ "Sequence",     STI_UINT32,  SOE_REQUIRED, 0 },
-		{ "Target",       STI_ACCOUNT, SOE_REQUIRED, 0 },
-		{ "Amount",       STI_UINT64,  SOE_REQUIRED, 0 },
-		{ "Currency",     STI_HASH160, SOE_IFFLAG,   1 },
-		{ "SourceTag",    STI_UINT32,  SOE_IFFLAG,   2 },
-		{ "Destination",  STI_ACCOUNT, SOE_IFFLAG,   4 },
-		{ "TargetLedger", STI_UINT32,  SOE_IFFLAG,   8 },
-		{ "Identifier",   STI_VL,      SOE_IFFLAG,   16 },
-		{ "Extensions",   STI_TL,      SOE_IFFLAG,   32768 },
-		{ NULL,           STI_DONE,    SOE_NEVER,    -1 } }
+		{ S_FIELD(Flags),        STI_UINT16,  SOE_FLAGS,    0 },
+		{ S_FIELD(Target),       STI_ACCOUNT, SOE_REQUIRED, 0 },
+		{ S_FIELD(Amount),       STI_UINT64,  SOE_REQUIRED, 0 },
+		{ S_FIELD(Currency),     STI_HASH160, SOE_IFFLAG,   1 },
+		{ S_FIELD(SourceTag),    STI_UINT32,  SOE_IFFLAG,   2 },
+		{ S_FIELD(Destination),  STI_ACCOUNT, SOE_IFFLAG,   4 },
+		{ S_FIELD(TargetLedger), STI_UINT32,  SOE_IFFLAG,   8 },
+		{ S_FIELD(Identifier),   STI_VL,      SOE_IFFLAG,   16 },
+		{ S_FIELD(Extensions),   STI_TL,      SOE_IFFLAG,   32768 },
+		{ sfInvalid, NULL,       STI_DONE,    SOE_NEVER,    -1 } }
 	},
 	{ "Offer", ttEXCHANGE_OFFER, {
-		{ "Flags",        STI_UINT16,  SOE_FLAGS,    0 },
-		{ "Sequence",     STI_UINT32,  SOE_REQUIRED, 0 },
-		{ "AmountIn",     STI_UINT64,  SOE_REQUIRED, 0 },
-		{ "CurrencyIn",   STI_HASH160, SOE_IFFLAG,   2 },
-		{ "AmountOut",    STI_UINT64,  SOE_REQUIRED, 0 },
-		{ "CurrencyOut",  STI_HASH160, SOE_IFFLAG,   4 },
-		{ "SourceTag",    STI_UINT32,  SOE_IFFLAG,   8 },
-		{ "Destination",  STI_ACCOUNT, SOE_IFFLAG,   16 },
-		{ "TargetLedger", STI_UINT32,  SOE_IFFLAG,   32 },
-		{ "ExpireLedger", STI_UINT32,  SOE_IFFLAG,   64 },
-		{ "Identifier",   STI_VL,      SOE_IFFLAG,   128 },
-		{ "Extensions",   STI_TL,      SOE_IFFLAG,   32768 },
-		{ NULL,           STI_DONE,    SOE_NEVER,    -1 } }
+		{ S_FIELD(Flags),        STI_UINT16,  SOE_FLAGS,    0 },
+		{ S_FIELD(AmountIn),     STI_UINT64,  SOE_REQUIRED, 0 },
+		{ S_FIELD(CurrencyIn),   STI_HASH160, SOE_IFFLAG,   2 },
+		{ S_FIELD(AmountOut),    STI_UINT64,  SOE_REQUIRED, 0 },
+		{ S_FIELD(CurrencyOut),  STI_HASH160, SOE_IFFLAG,   4 },
+		{ S_FIELD(SourceTag),    STI_UINT32,  SOE_IFFLAG,   8 },
+		{ S_FIELD(Destination),  STI_ACCOUNT, SOE_IFFLAG,   16 },
+		{ S_FIELD(TargetLedger), STI_UINT32,  SOE_IFFLAG,   32 },
+		{ S_FIELD(ExpireLedger), STI_UINT32,  SOE_IFFLAG,   64 },
+		{ S_FIELD(Identifier),   STI_VL,      SOE_IFFLAG,   128 },
+		{ S_FIELD(Extensions),   STI_TL,      SOE_IFFLAG,   32768 },
+		{ sfInvalid, NULL,       STI_DONE,    SOE_NEVER,    -1 } }
 	},
-	{ NULL, ttINVALID  }
+	{ NULL, ttINVALID }
 };
 
 TransactionFormat* getFormat(TransactionType t)
diff --git a/src/TransactionFormats.h b/src/TransactionFormats.h
index 52e91e1c9..6c68d12c3 100644
--- a/src/TransactionFormats.h
+++ b/src/TransactionFormats.h
@@ -3,8 +3,6 @@
 
 #include "SerializedObject.h"
 
-#define STI_ACCOUNT STI_HASH160
-
 enum TransactionType
 {
 	ttINVALID=-1,
@@ -20,7 +18,11 @@ struct TransactionFormat
 	SOElement elements[16];
 };
 
-const int32 TransactionMagic=0x54583000;
+const int32 TransactionMagic=0x54584E00;
+
+const int TransactionIVersion=0, TransactionISigningAccount=1, TransactionISequence=2;
+const int TransactionIType=3, TransactionIFee=4;
+
 const int TransactionMinLen=32;
 const int TransactionMaxLen=1048576;