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diff --git a/src/wallet/api/unsigned_transaction.h b/src/wallet/api/unsigned_transaction.h
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+++ b/src/wallet/api/unsigned_transaction.h
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+// Copyright (c) 2014-2016, 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.
+//
+// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
+
+#include "wallet/wallet2_api.h"
+#include "wallet/wallet2.h"
+
+#include <string>
+#include <vector>
+
+
+namespace Monero {
+
+class WalletImpl;
+class UnsignedTransactionImpl : public UnsignedTransaction
+{
+public:
+    UnsignedTransactionImpl(WalletImpl &wallet);
+    ~UnsignedTransactionImpl();
+    int status() const;
+    std::string errorString() const;
+    std::vector<uint64_t> amount() const;
+    std::vector<uint64_t> dust() const;
+    std::vector<uint64_t> fee() const;
+    std::vector<uint64_t> mixin() const;
+    std::vector<std::string> paymentId() const;
+    std::vector<std::string> recipientAddress() const;
+    uint64_t txCount() const;
+    // sign txs and save to file
+    bool sign(const std::string &signedFileName);
+    std::string confirmationMessage() const {return m_confirmationMessage;}
+    uint64_t minMixinCount() const;
+
+private:
+    // Callback function to check all loaded tx's and generate confirmationMessage
+    bool checkLoadedTx(const std::function<size_t()> get_num_txes, const std::function<const tools::wallet2::tx_construction_data&(size_t)> &get_tx, const std::string &extra_message);
+    
+    friend class WalletImpl;
+    WalletImpl &m_wallet;
+
+    int  m_status;
+    std::string m_errorString;
+    tools::wallet2::unsigned_tx_set m_unsigned_tx_set;
+    std::string m_confirmationMessage;
+};
+
+
+}
+
+namespace Bitmonero = Monero;