diff --git a/src/carrot_impl/carrot_boost_serialization.h b/src/carrot_impl/carrot_boost_serialization.h
index 8b066b3..176f097 100644
--- a/src/carrot_impl/carrot_boost_serialization.h
+++ b/src/carrot_impl/carrot_boost_serialization.h
@@ -31,9 +31,13 @@
 #pragma once
 
 //local headers
-#include "carrot_core/core_types.h"
+#include "carrot_chain_serialization.h"
+#include "carrot_core/payment_proposal.h"
+#include "carrot_tx_builder_types.h"
+#include "subaddress_index.h"
 
 //third party headers
+#include <boost/serialization/optional_shim.hpp>
 #include <boost/serialization/utility.hpp>
 
 //standard headers
@@ -46,6 +50,12 @@ namespace serialization
 {
 //---------------------------------------------------
 template <class Archive>
+inline void serialize(Archive &a, mx25519_pubkey &x, const boost::serialization::version_type ver)
+{
+    a & x.data;
+}
+//---------------------------------------------------
+template <class Archive>
 inline void serialize(Archive &a, carrot::view_tag_t &x, const boost::serialization::version_type ver)
 {
     a & x.bytes;
@@ -57,5 +67,70 @@ inline void serialize(Archive &a, carrot::encrypted_janus_anchor_t &x, const boo
     a & x.bytes;
 }
 //---------------------------------------------------
+template <class Archive>
+inline void serialize(Archive &a, carrot::encrypted_payment_id_t &x, const boost::serialization::version_type ver)
+{
+    a & x.bytes;
+}
+//---------------------------------------------------
+template <class Archive>
+inline void serialize(Archive &a, carrot::CarrotDestinationV1 &x, const boost::serialization::version_type ver)
+{
+    a & x.address_spend_pubkey;
+    a & x.address_view_pubkey;
+    a & x.is_subaddress;
+    a & x.payment_id;
+}
+//---------------------------------------------------
+template <class Archive>
+inline void serialize(Archive &a, carrot::CarrotPaymentProposalV1 &x, const boost::serialization::version_type ver)
+{
+    a & x.destination;
+    a & x.amount;
+    a & x.randomness;
+}
+//---------------------------------------------------
+template <class Archive>
+inline void serialize(Archive &a, carrot::CarrotPaymentProposalSelfSendV1 &x, const boost::serialization::version_type ver)
+{
+    a & x.destination_address_spend_pubkey;
+    a & x.amount;
+    a & x.enote_type;
+    a & x.enote_ephemeral_pubkey;
+    a & x.internal_message;
+}
+//---------------------------------------------------
+template <class Archive>
+inline void serialize(Archive &a, carrot::subaddress_index &x, const boost::serialization::version_type ver)
+{
+    a & x.major;
+    a & x.minor;
+}
+//---------------------------------------------------
+template <class Archive>
+inline void serialize(Archive &a, carrot::subaddress_index_extended &x, const boost::serialization::version_type ver)
+{
+    a & x.index;
+    a & x.derive_type;
+}
+//---------------------------------------------------
+template <class Archive>
+inline void serialize(Archive &a, carrot::CarrotPaymentProposalVerifiableSelfSendV1 &x, const boost::serialization::version_type ver)
+{
+    a & x.proposal;
+    a & x.subaddr_index;
+}
+//---------------------------------------------------
+template <class Archive>
+inline void serialize(Archive &a, carrot::CarrotTransactionProposalV1 &x, const boost::serialization::version_type ver)
+{
+    a & x.key_images_sorted;
+    a & x.normal_payment_proposals;
+    a & x.selfsend_payment_proposals;
+    a & x.dummy_encrypted_payment_id;
+    a & x.fee;
+    a & x.extra;
+}
+//---------------------------------------------------
 } //namespace serialization
 } //namespace boot
diff --git a/src/carrot_impl/carrot_chain_serialization.h b/src/carrot_impl/carrot_chain_serialization.h
index 8a3139f..009eabd 100644
--- a/src/carrot_impl/carrot_chain_serialization.h
+++ b/src/carrot_impl/carrot_chain_serialization.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2024, The Monero Project
+// Copyright (c) 2025, The Monero Project
 // 
 // All rights reserved.
 // 
diff --git a/src/carrot_impl/carrot_offchain_serialization.h b/src/carrot_impl/carrot_offchain_serialization.h
new file mode 100644
index 0000000..345a3f3
--- /dev/null
+++ b/src/carrot_impl/carrot_offchain_serialization.h
@@ -0,0 +1,90 @@
+// Copyright (c) 2025, The Monero Project
+// 
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+// 
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+// 
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+// 
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#pragma once
+
+//local headers
+#include "carrot_chain_serialization.h"
+#include "carrot_core/payment_proposal.h"
+#include "carrot_tx_builder_types.h"
+#include "serialization/crypto.h"
+#include "serialization/optional.h"
+#include "subaddress_index.h"
+
+//third party headers
+
+//standard headers
+
+//forward declarations
+
+BLOB_SERIALIZER(carrot::payment_id_t);
+
+BEGIN_SERIALIZE_OBJECT_FN(carrot::CarrotDestinationV1)
+    FIELD_F(address_spend_pubkey)
+    FIELD_F(address_view_pubkey)
+    FIELD_F(is_subaddress)
+    FIELD_F(payment_id)
+END_SERIALIZE()
+
+BEGIN_SERIALIZE_OBJECT_FN(carrot::CarrotPaymentProposalV1)
+    FIELD_F(destination)
+    VARINT_FIELD_F(amount)
+    FIELD_F(randomness)
+END_SERIALIZE()
+
+BEGIN_SERIALIZE_OBJECT_FN(carrot::CarrotPaymentProposalSelfSendV1)
+    FIELD_F(destination_address_spend_pubkey)
+    VARINT_FIELD_F(amount)
+    VARINT_FIELD_F(enote_type)
+    FIELD_F(enote_ephemeral_pubkey)
+    FIELD_F(internal_message)
+END_SERIALIZE()
+
+BEGIN_SERIALIZE_OBJECT_FN(carrot::subaddress_index)
+    VARINT_FIELD_F(major)
+    VARINT_FIELD_F(minor)
+END_SERIALIZE()
+
+BEGIN_SERIALIZE_OBJECT_FN(carrot::subaddress_index_extended)
+    FIELD_F(index)
+    VARINT_FIELD_F(derive_type)
+END_SERIALIZE()
+
+BEGIN_SERIALIZE_OBJECT_FN(carrot::CarrotPaymentProposalVerifiableSelfSendV1)
+    FIELD_F(proposal)
+    FIELD_F(subaddr_index)
+END_SERIALIZE()
+
+BEGIN_SERIALIZE_OBJECT_FN(carrot::CarrotTransactionProposalV1)
+    FIELD_F(key_images_sorted)
+    FIELD_F(normal_payment_proposals)
+    FIELD_F(selfsend_payment_proposals)
+    FIELD_F(dummy_encrypted_payment_id)
+    VARINT_FIELD_F(fee)
+    FIELD_F(extra)
+END_SERIALIZE()