diff --git a/libraries/app/CMakeLists.txt b/libraries/app/CMakeLists.txt
index 93e540f9..e6f8940c 100644
--- a/libraries/app/CMakeLists.txt
+++ b/libraries/app/CMakeLists.txt
@@ -14,7 +14,7 @@ add_library( graphene_app
 
 # need to link graphene_debug_witness because plugins aren't sufficiently isolated #246
 #target_link_libraries( graphene_app graphene_market_history graphene_account_history graphene_chain fc graphene_db graphene_net graphene_utilities graphene_debug_witness )
-target_link_libraries( graphene_app graphene_market_history graphene_account_history graphene_accounts_list graphene_affiliate_stats graphene_chain fc graphene_db graphene_net graphene_time graphene_utilities graphene_debug_witness graphene_bookie )
+target_link_libraries( graphene_app graphene_market_history graphene_account_history graphene_accounts_list graphene_affiliate_stats graphene_chain fc graphene_db graphene_net graphene_time graphene_utilities graphene_debug_witness graphene_bookie peerplays_sidechain )
 target_include_directories( graphene_app
                             PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/include"
                             "${CMAKE_CURRENT_SOURCE_DIR}/../egenesis/include" )
diff --git a/libraries/app/api.cpp b/libraries/app/api.cpp
index 833069f8..d31abe19 100644
--- a/libraries/app/api.cpp
+++ b/libraries/app/api.cpp
@@ -443,6 +443,11 @@ namespace graphene { namespace app {
                assert( aobj != nullptr );
                accounts.insert( aobj->son_account );
                break;
+            } case sidechain_address_object_type:{
+               const auto& aobj = dynamic_cast<const sidechain_address_object*>(obj);
+               assert( aobj != nullptr );
+               accounts.insert( aobj->sidechain_address_account );
+               break;
             }
             case sport_object_type:
             case event_group_object_type:
diff --git a/libraries/app/database_api.cpp b/libraries/app/database_api.cpp
index b9ae31b6..39a984d3 100644
--- a/libraries/app/database_api.cpp
+++ b/libraries/app/database_api.cpp
@@ -103,7 +103,7 @@ class database_api_impl : public std::enable_shared_from_this<database_api_impl>
       uint64_t                       get_asset_count()const;
 
       // Peerplays
-      vector<sport_object>                list_sports() const; 
+      vector<sport_object>                list_sports() const;
       vector<event_group_object>          list_event_groups(sport_id_type sport_id) const;
       vector<event_object>                list_events_in_group(event_group_id_type event_group_id) const;
       vector<betting_market_group_object> list_betting_market_groups(event_id_type) const;
@@ -115,14 +115,14 @@ class database_api_impl : public std::enable_shared_from_this<database_api_impl>
       vector<asset_object> get_lotteries( asset_id_type stop  = asset_id_type(),
                                           unsigned limit = 100,
                                           asset_id_type start = asset_id_type() )const;
-      vector<asset_object> get_account_lotteries( account_id_type issuer, 
+      vector<asset_object> get_account_lotteries( account_id_type issuer,
                                                   asset_id_type stop,
                                                   unsigned limit,
                                                   asset_id_type start )const;
       asset get_lottery_balance( asset_id_type lottery_id )const;
       sweeps_vesting_balance_object get_sweeps_vesting_balance_object( account_id_type account )const;
       asset get_sweeps_vesting_balance_available_for_claim( account_id_type account )const;
-   
+
       // Markets / feeds
       vector<limit_order_object>         get_limit_orders(asset_id_type a, asset_id_type b, uint32_t limit)const;
       vector<call_order_object>          get_call_orders(asset_id_type a, uint32_t limit)const;
@@ -152,6 +152,12 @@ class database_api_impl : public std::enable_shared_from_this<database_api_impl>
       map<string, son_id_type> lookup_son_accounts(const string& lower_bound_name, uint32_t limit)const;
       uint64_t get_son_count()const;
 
+      // Sidechain addresses
+      vector<optional<sidechain_address_object>> get_sidechain_addresses(const vector<sidechain_address_id_type>& sidechain_address_ids)const;
+      vector<optional<sidechain_address_object>> get_sidechain_addresses_by_account(account_id_type account)const;
+      fc::optional<sidechain_address_object> get_sidechain_addresses_by_account_and_sidechain(account_id_type account, peerplays_sidechain::sidechain_type sidechain)const;
+      uint64_t get_sidechain_addresses_count()const;
+
       // Votes
       vector<variant> lookup_vote_ids( const vector<vote_id_type>& votes )const;
 
@@ -528,11 +534,11 @@ vector<vector<account_id_type>> database_api::get_key_references( vector<public_
 vector<vector<account_id_type>> database_api_impl::get_key_references( vector<public_key_type> keys )const
 {
    wdump( (keys) );
-   
+
    const auto& idx = _db.get_index_type<account_index>();
    const auto& aidx = dynamic_cast<const base_primary_index&>(idx);
    const auto& refs = aidx.get_secondary_index<graphene::chain::account_member_index>();
-   
+
    vector< vector<account_id_type> > final_result;
    final_result.reserve(keys.size());
 
@@ -648,7 +654,7 @@ std::map<std::string, full_account> database_api_impl::get_full_accounts( const
    const auto& proposal_idx = _db.get_index_type<proposal_index>();
    const auto& pidx = dynamic_cast<const base_primary_index&>(proposal_idx);
    const auto& proposals_by_account = pidx.get_secondary_index<graphene::chain::required_approval_index>();
-   
+
    std::map<std::string, full_account> results;
 
    for (const std::string& account_name_or_id : names_or_ids)
@@ -738,7 +744,7 @@ std::map<std::string, full_account> database_api_impl::get_full_accounts( const
                        acnt.withdraws.emplace_back(withdraw);
                     });
 
-      auto pending_payouts_range = 
+      auto pending_payouts_range =
          _db.get_index_type<pending_dividend_payout_balance_for_holder_object_index>().indices().get<by_account_dividend_payout>().equal_range(boost::make_tuple(account->id));
 
       std::copy(pending_payouts_range.first, pending_payouts_range.second, std::back_inserter(acnt.pending_dividend_payments));
@@ -1058,7 +1064,7 @@ vector<asset_object> database_api_impl::get_lotteries( asset_id_type stop,
 
    return result;
 }
-vector<asset_object> database_api::get_account_lotteries( account_id_type issuer, 
+vector<asset_object> database_api::get_account_lotteries( account_id_type issuer,
                                                                asset_id_type stop,
                                                                unsigned limit,
                                                                asset_id_type start )const
@@ -1066,7 +1072,7 @@ vector<asset_object> database_api::get_account_lotteries( account_id_type issuer
    return my->get_account_lotteries( issuer, stop, limit, start );
 }
 
-vector<asset_object> database_api_impl::get_account_lotteries( account_id_type issuer, 
+vector<asset_object> database_api_impl::get_account_lotteries( account_id_type issuer,
                                                                asset_id_type stop,
                                                                unsigned limit,
                                                                asset_id_type start )const
@@ -1763,6 +1769,61 @@ uint64_t database_api_impl::get_son_count()const
    return _db.get_index_type<son_index>().indices().size();
 }
 
+//////////////////////////////////////////////////////////////////////
+//                                                                  //
+// Sidechain Accounts                                               //
+//                                                                  //
+//////////////////////////////////////////////////////////////////////
+
+vector<optional<sidechain_address_object>> database_api::get_sidechain_addresses(const vector<sidechain_address_id_type>& sidechain_address_ids)const
+{
+   return my->get_sidechain_addresses( sidechain_address_ids );
+}
+
+vector<optional<sidechain_address_object>> database_api_impl::get_sidechain_addresses(const vector<sidechain_address_id_type>& sidechain_address_ids)const
+{
+   vector<optional<sidechain_address_object>> result; result.reserve(sidechain_address_ids.size());
+   std::transform(sidechain_address_ids.begin(), sidechain_address_ids.end(), std::back_inserter(result),
+                  [this](sidechain_address_id_type id) -> optional<sidechain_address_object> {
+      if(auto o = _db.find(id))
+         return *o;
+      return {};
+   });
+   return result;
+}
+
+vector<optional<sidechain_address_object>> database_api::get_sidechain_addresses_by_account(account_id_type account)const
+{
+   return my->get_sidechain_addresses_by_account( account );
+}
+
+vector<optional<sidechain_address_object>> database_api_impl::get_sidechain_addresses_by_account(account_id_type account)const
+{
+   vector<optional<sidechain_address_object>> result;
+   return result;
+}
+
+fc::optional<sidechain_address_object> database_api::get_sidechain_addresses_by_account_and_sidechain(account_id_type account, peerplays_sidechain::sidechain_type sidechain)const
+{
+   return my->get_sidechain_addresses_by_account_and_sidechain( account, sidechain );
+}
+
+fc::optional<sidechain_address_object> database_api_impl::get_sidechain_addresses_by_account_and_sidechain(account_id_type account, peerplays_sidechain::sidechain_type sidechain)const
+{
+   sidechain_address_object result;
+   return result;
+}
+
+uint64_t database_api::get_sidechain_addresses_count()const
+{
+   return my->get_sidechain_addresses_count();
+}
+
+uint64_t database_api_impl::get_sidechain_addresses_count()const
+{
+   return 0;
+}
+
 //////////////////////////////////////////////////////////////////////
 //                                                                  //
 // Votes                                                            //
@@ -2164,7 +2225,7 @@ vector<tournament_object> database_api::get_tournaments(tournament_id_type stop,
 
 vector<tournament_object> database_api_impl::get_tournaments(tournament_id_type stop,
                                                              unsigned limit,
-                                                             tournament_id_type start) 
+                                                             tournament_id_type start)
 {
    vector<tournament_object> result;
    const auto& tournament_idx = _db.get_index_type<tournament_index>().indices().get<by_id>();
@@ -2191,7 +2252,7 @@ vector<tournament_object> database_api_impl::get_tournaments_by_state(tournament
                                                                       unsigned limit,
                                                                       tournament_id_type start,
                                                                       tournament_state state)
-{   
+{
    vector<tournament_object> result;
    const auto& tournament_idx = _db.get_index_type<tournament_index>().indices().get<by_id>();
    for (auto elem: tournament_idx) {
@@ -2320,7 +2381,7 @@ void database_api_impl::handle_object_changed(bool force_notify, bool full_objec
    /// if a connection hangs then this could get backed up and result in
    /// a failure to exit cleanly.
    //fc::async([capture_this,this,updates,market_broadcast_queue](){
-   //if( _subscribe_callback ) 
+   //if( _subscribe_callback )
    //         _subscribe_callback( updates );
 
       for(auto id : ids)
diff --git a/libraries/app/impacted.cpp b/libraries/app/impacted.cpp
index 997a3a38..4a21adcc 100644
--- a/libraries/app/impacted.cpp
+++ b/libraries/app/impacted.cpp
@@ -307,6 +307,15 @@ struct get_impacted_account_visitor
    void operator()( const son_delete_operation& op ){
       _impacted.insert( op.owner_account );
    }
+   void operator()( const sidechain_address_add_operation& op ){
+        _impacted.insert( op.sidechain_address_account );
+   }
+   void operator()( const sidechain_address_update_operation& op ){
+      _impacted.insert( op.sidechain_address_account );
+   }
+   void operator()( const sidechain_address_delete_operation& op ){
+      _impacted.insert( op.sidechain_address_account );
+   }
 };
 
 void operation_get_impacted_accounts( const operation& op, flat_set<account_id_type>& result )
diff --git a/libraries/app/include/graphene/app/database_api.hpp b/libraries/app/include/graphene/app/database_api.hpp
index d597110e..2cf1bcd0 100644
--- a/libraries/app/include/graphene/app/database_api.hpp
+++ b/libraries/app/include/graphene/app/database_api.hpp
@@ -44,6 +44,7 @@
 #include <graphene/chain/betting_market_object.hpp>
 #include <graphene/chain/global_betting_statistics_object.hpp>
 #include <graphene/chain/son_object.hpp>
+#include <graphene/chain/sidechain_address_object.hpp>
 
 #include <graphene/chain/worker_object.hpp>
 #include <graphene/chain/witness_object.hpp>
@@ -602,6 +603,39 @@ class database_api
        */
       uint64_t get_son_count()const;
 
+      /////////////////////////
+      // Sidechain Addresses //
+      /////////////////////////
+
+      /**
+       * @brief Get a list of sidechain addresses
+       * @param sidechain_address_ids IDs of the sidechain accounts to retrieve
+       * @return The sidechain accounts corresponding to the provided IDs
+       *
+       * This function has semantics identical to @ref get_objects
+       */
+      vector<optional<sidechain_address_object>> get_sidechain_addresses(const vector<sidechain_address_id_type>& sidechain_address_ids)const;
+
+      /**
+       * @brief Get the sidechain addresses for a given account
+       * @param account The ID of the account whose sidechain addresses should be retrieved
+       * @return The sidechain addresses objects, or null if the account does not have a sidechain addresses
+       */
+      vector<optional<sidechain_address_object>> get_sidechain_addresses_by_account(account_id_type account)const;
+
+      /**
+       * @brief Get the sidechain addresses for a given account and sidechain
+       * @param account The ID of the account whose sidechain addresses should be retrieved
+       * @param sidechain Sidechain for which address should be retrieved
+       * @return The sidechain addresses objects, or null if the account does not have a sidechain addresses for a given network
+       */
+      fc::optional<sidechain_address_object> get_sidechain_addresses_by_account_and_sidechain(account_id_type account, peerplays_sidechain::sidechain_type sidechain)const;
+
+      /**
+       * @brief Get the total number of sidechain addresses registered with the blockchain
+       */
+      uint64_t get_sidechain_addresses_count()const;
+
       /// WORKERS
 
       /**
diff --git a/libraries/chain/CMakeLists.txt b/libraries/chain/CMakeLists.txt
index 5688eabf..4e3d4625 100644
--- a/libraries/chain/CMakeLists.txt
+++ b/libraries/chain/CMakeLists.txt
@@ -116,13 +116,15 @@ add_library( graphene_chain
              son_evaluator.cpp
              son_object.cpp
 
+             sidechain_address_evaluator.cpp
+
              ${HEADERS}
              ${PROTOCOL_HEADERS}
              "${CMAKE_CURRENT_BINARY_DIR}/include/graphene/chain/hardfork.hpp"
            )
 
 add_dependencies( graphene_chain build_hardfork_hpp )
-target_link_libraries( graphene_chain fc graphene_db )
+target_link_libraries( graphene_chain fc graphene_db peerplays_sidechain )
 target_include_directories( graphene_chain
                             PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/include" "${CMAKE_CURRENT_BINARY_DIR}/include" )
 
diff --git a/libraries/chain/db_init.cpp b/libraries/chain/db_init.cpp
index 72841afe..4c4f62f4 100644
--- a/libraries/chain/db_init.cpp
+++ b/libraries/chain/db_init.cpp
@@ -56,6 +56,7 @@
 #include <graphene/chain/global_betting_statistics_object.hpp>
 #include <graphene/chain/son_object.hpp>
 #include <graphene/chain/son_proposal_object.hpp>
+#include <graphene/chain/sidechain_address_object.hpp>
 
 #include <graphene/chain/account_evaluator.hpp>
 #include <graphene/chain/asset_evaluator.hpp>
@@ -78,6 +79,7 @@
 #include <graphene/chain/betting_market_evaluator.hpp>
 #include <graphene/chain/tournament_evaluator.hpp>
 #include <graphene/chain/son_evaluator.hpp>
+#include <graphene/chain/sidechain_address_evaluator.hpp>
 
 #include <graphene/chain/protocol/fee_schedule.hpp>
 
@@ -247,6 +249,9 @@ void database::initialize_evaluators()
    register_evaluator<create_son_evaluator>();
    register_evaluator<update_son_evaluator>();
    register_evaluator<delete_son_evaluator>();
+   register_evaluator<add_sidechain_address_evaluator>();
+   register_evaluator<update_sidechain_address_evaluator>();
+   register_evaluator<delete_sidechain_address_evaluator>();
 }
 
 void database::initialize_indexes()
@@ -291,6 +296,8 @@ void database::initialize_indexes()
    add_index< primary_index<game_index> >();
    add_index< primary_index<son_proposal_index> >();
 
+   add_index< primary_index<sidechain_address_index> >();
+
    //Implementation object indexes
    add_index< primary_index<transaction_index                             > >();
 
diff --git a/libraries/chain/db_notify.cpp b/libraries/chain/db_notify.cpp
index 63b0fce8..401b5770 100644
--- a/libraries/chain/db_notify.cpp
+++ b/libraries/chain/db_notify.cpp
@@ -294,6 +294,15 @@ struct get_impacted_account_visitor
    void operator()( const son_delete_operation& op ) {
       _impacted.insert( op.owner_account );
    }
+   void operator()( const sidechain_address_add_operation& op ) {
+      _impacted.insert( op.sidechain_address_account );
+   }
+   void operator()( const sidechain_address_update_operation& op ) {
+       _impacted.insert( op.sidechain_address_account );
+   }
+   void operator()( const sidechain_address_delete_operation& op ) {
+      _impacted.insert( op.sidechain_address_account );
+   }
 };
 
 void operation_get_impacted_accounts( const operation& op, flat_set<account_id_type>& result )
@@ -387,6 +396,11 @@ void get_relevant_accounts( const object* obj, flat_set<account_id_type>& accoun
            assert( aobj != nullptr );
            accounts.insert( aobj->son_account );
            break;
+        /*} case sidechain_address_object_type:{
+           const auto& aobj = dynamic_cast<const sidechain_address_object*>(obj);
+           assert( aobj != nullptr );
+           accounts.insert( aobj->sidechain_address_account );
+           break;*/
         }
       }
    }
diff --git a/libraries/chain/include/graphene/chain/protocol/operations.hpp b/libraries/chain/include/graphene/chain/protocol/operations.hpp
index cbad1e05..8958cf25 100644
--- a/libraries/chain/include/graphene/chain/protocol/operations.hpp
+++ b/libraries/chain/include/graphene/chain/protocol/operations.hpp
@@ -46,6 +46,7 @@
 #include <graphene/chain/protocol/betting_market.hpp>
 #include <graphene/chain/protocol/tournament.hpp>
 #include <graphene/chain/protocol/son.hpp>
+#include <graphene/chain/protocol/sidechain_address.hpp>
 
 namespace graphene { namespace chain {
 
@@ -139,7 +140,10 @@ namespace graphene { namespace chain {
             sweeps_vesting_claim_operation,
             son_create_operation,
             son_update_operation,
-            son_delete_operation
+            son_delete_operation,
+            sidechain_address_add_operation,
+            sidechain_address_update_operation,
+            sidechain_address_delete_operation
          > operation;
 
    /// @} // operations group
diff --git a/libraries/chain/include/graphene/chain/protocol/sidechain_address.hpp b/libraries/chain/include/graphene/chain/protocol/sidechain_address.hpp
new file mode 100644
index 00000000..81654497
--- /dev/null
+++ b/libraries/chain/include/graphene/chain/protocol/sidechain_address.hpp
@@ -0,0 +1,63 @@
+#pragma once
+#include <graphene/chain/protocol/base.hpp>
+
+#include <graphene/peerplays_sidechain/defs.hpp>
+
+namespace graphene { namespace chain {
+
+    struct sidechain_address_add_operation : public base_operation
+    {
+        struct fee_parameters_type { uint64_t fee = 0; };
+
+        asset fee;
+        account_id_type sidechain_address_account;
+        graphene::peerplays_sidechain::sidechain_type sidechain;
+        string address;
+        string private_key;
+        string public_key;
+
+        account_id_type fee_payer()const { return sidechain_address_account; }
+        share_type      calculate_fee(const fee_parameters_type& k)const { return 0; }
+    };
+
+    struct sidechain_address_update_operation : public base_operation
+    {
+        struct fee_parameters_type { uint64_t fee = 0; };
+
+        asset fee;
+        sidechain_address_id_type sidechain_address_id;
+        account_id_type sidechain_address_account;
+        graphene::peerplays_sidechain::sidechain_type sidechain;
+        optional<string> address;
+        optional<string> private_key;
+        optional<string> public_key;
+
+        account_id_type fee_payer()const { return sidechain_address_account; }
+        share_type      calculate_fee(const fee_parameters_type& k)const { return 0; }
+    };
+
+    struct sidechain_address_delete_operation : public base_operation
+    {
+        struct fee_parameters_type { uint64_t fee = 0; };
+
+        asset fee;
+        sidechain_address_id_type sidechain_address_id;
+        account_id_type sidechain_address_account;
+        graphene::peerplays_sidechain::sidechain_type sidechain;
+
+        account_id_type fee_payer()const { return sidechain_address_account; }
+        share_type      calculate_fee(const fee_parameters_type& k)const { return 0; }
+    };
+
+} } // namespace graphene::chain
+
+FC_REFLECT(graphene::chain::sidechain_address_add_operation::fee_parameters_type, (fee) )
+FC_REFLECT(graphene::chain::sidechain_address_add_operation, (fee)(sidechain_address_account)(sidechain)
+        (address)(private_key)(public_key) )
+
+FC_REFLECT(graphene::chain::sidechain_address_update_operation::fee_parameters_type, (fee) )
+//FC_REFLECT(graphene::chain::sidechain_address_update_operation, (fee)(sidechain_address_id)(sidechain_address_account)/*(sidechain)*/
+//        (address)(private_key)(public_key) )
+
+FC_REFLECT(graphene::chain::sidechain_address_delete_operation::fee_parameters_type, (fee) )
+//FC_REFLECT(graphene::chain::sidechain_address_delete_operation, (fee)(sidechain_address_id)(sidechain_address_account)/*(sidechain)*/ )
diff --git a/libraries/chain/include/graphene/chain/protocol/types.hpp b/libraries/chain/include/graphene/chain/protocol/types.hpp
index bcdd1a83..463c862f 100644
--- a/libraries/chain/include/graphene/chain/protocol/types.hpp
+++ b/libraries/chain/include/graphene/chain/protocol/types.hpp
@@ -147,6 +147,7 @@ namespace graphene { namespace chain {
       bet_object_type,
       son_object_type,
       son_proposal_object_type,
+      sidechain_address_object_type,
       OBJECT_TYPE_COUNT ///< Sentry value which contains the number of different object types
    };
 
@@ -209,6 +210,7 @@ namespace graphene { namespace chain {
    class bet_object;
    class son_object;
    class son_proposal_object;
+   class sidechain_address_object;
 
    typedef object_id< protocol_ids, account_object_type,            account_object>               account_id_type;
    typedef object_id< protocol_ids, asset_object_type,              asset_object>                 asset_id_type;
@@ -237,6 +239,7 @@ namespace graphene { namespace chain {
    typedef object_id< protocol_ids, bet_object_type,                bet_object>                   bet_id_type;
    typedef object_id< protocol_ids, son_object_type,                son_object>                   son_id_type;
    typedef object_id< protocol_ids, son_proposal_object_type,       son_proposal_object>          son_proposal_id_type;
+   typedef object_id< protocol_ids, sidechain_address_object_type,  sidechain_address_object>     sidechain_address_id_type;
 
    // implementation types
    class global_property_object;
@@ -421,6 +424,7 @@ FC_REFLECT_ENUM( graphene::chain::object_type,
                  (bet_object_type)
                  (son_object_type)
                  (son_proposal_object_type)
+                 (sidechain_address_object_type)
                  (OBJECT_TYPE_COUNT)
                )
 FC_REFLECT_ENUM( graphene::chain::impl_object_type,
@@ -493,6 +497,7 @@ FC_REFLECT_TYPENAME( graphene::chain::global_betting_statistics_id_type )
 FC_REFLECT_TYPENAME( graphene::chain::tournament_details_id_type )
 FC_REFLECT_TYPENAME( graphene::chain::son_id_type )
 FC_REFLECT_TYPENAME( graphene::chain::son_proposal_id_type )
+FC_REFLECT_TYPENAME( graphene::chain::sidechain_address_id_type )
 
 
 FC_REFLECT( graphene::chain::void_t, )
diff --git a/libraries/chain/include/graphene/chain/sidechain_address_evaluator.hpp b/libraries/chain/include/graphene/chain/sidechain_address_evaluator.hpp
new file mode 100644
index 00000000..82bfcf1a
--- /dev/null
+++ b/libraries/chain/include/graphene/chain/sidechain_address_evaluator.hpp
@@ -0,0 +1,34 @@
+#pragma once
+#include <graphene/chain/evaluator.hpp>
+#include <graphene/chain/protocol/sidechain_address.hpp>
+
+namespace graphene { namespace chain {
+
+class add_sidechain_address_evaluator : public evaluator<add_sidechain_address_evaluator>
+{
+public:
+    typedef sidechain_address_add_operation operation_type;
+
+    void_result do_evaluate(const sidechain_address_add_operation& o);
+    object_id_type do_apply(const sidechain_address_add_operation& o);
+};
+
+class update_sidechain_address_evaluator : public evaluator<update_sidechain_address_evaluator>
+{
+public:
+    typedef sidechain_address_update_operation operation_type;
+
+    void_result do_evaluate(const sidechain_address_update_operation& o);
+    object_id_type do_apply(const sidechain_address_update_operation& o);
+};
+
+class delete_sidechain_address_evaluator : public evaluator<delete_sidechain_address_evaluator>
+{
+public:
+    typedef sidechain_address_delete_operation operation_type;
+
+    void_result do_evaluate(const sidechain_address_delete_operation& o);
+    void_result do_apply(const sidechain_address_delete_operation& o);
+};
+
+} } // namespace graphene::chain
diff --git a/libraries/chain/include/graphene/chain/sidechain_address_object.hpp b/libraries/chain/include/graphene/chain/sidechain_address_object.hpp
new file mode 100644
index 00000000..f9427243
--- /dev/null
+++ b/libraries/chain/include/graphene/chain/sidechain_address_object.hpp
@@ -0,0 +1,63 @@
+#pragma once
+#include <graphene/chain/protocol/types.hpp>
+#include <graphene/db/object.hpp>
+#include <graphene/db/generic_index.hpp>
+
+#include <graphene/peerplays_sidechain/defs.hpp>
+
+namespace graphene { namespace chain {
+   using namespace graphene::db;
+
+   /**
+    * @class sidechain_address_object
+    * @brief tracks information about a sidechain addresses for user accounts.
+    * @ingroup object
+    */
+   class sidechain_address_object : public abstract_object<sidechain_address_object>
+   {
+      public:
+         static const uint8_t space_id = protocol_ids;
+         static const uint8_t type_id  = sidechain_address_object_type;
+
+         account_id_type sidechain_address_account;
+         graphene::peerplays_sidechain::sidechain_type sidechain;
+         string address;
+         string private_key;
+         string public_key;
+
+         sidechain_address_object() :
+            sidechain(graphene::peerplays_sidechain::sidechain_type::bitcoin),
+            address(""),
+            private_key(""),
+            public_key("") {}
+   };
+
+   struct by_account;
+   struct by_network;
+   struct by_account_and_network;
+   using sidechain_address_multi_index_type = multi_index_container<
+      sidechain_address_object,
+      indexed_by<
+         ordered_unique< tag<by_id>,
+            member<object, object_id_type, &object::id>
+         >,
+         ordered_unique< tag<by_account>,
+            member<sidechain_address_object, account_id_type, &sidechain_address_object::sidechain_address_account>
+         >,
+         ordered_unique< tag<by_network>,
+            member<sidechain_address_object, const peerplays_sidechain::sidechain_type, &sidechain_address_object::sidechain>
+         >,
+         ordered_unique< tag<by_account_and_network>,
+            composite_key<sidechain_address_object,
+               member<sidechain_address_object, account_id_type, &sidechain_address_object::sidechain_address_account>,
+               member<sidechain_address_object, peerplays_sidechain::sidechain_type, &sidechain_address_object::sidechain>
+            >
+         >
+      >
+   >;
+   using sidechain_address_index = generic_index<sidechain_address_object, sidechain_address_multi_index_type>;
+
+} } // graphene::chain
+
+FC_REFLECT_DERIVED( graphene::chain::sidechain_address_object, (graphene::db::object),
+                    (sidechain_address_account)/*(sidechain)*/(address)(private_key)(public_key) )
diff --git a/libraries/chain/sidechain_address_evaluator.cpp b/libraries/chain/sidechain_address_evaluator.cpp
new file mode 100644
index 00000000..518e5be3
--- /dev/null
+++ b/libraries/chain/sidechain_address_evaluator.cpp
@@ -0,0 +1,70 @@
+#include <graphene/chain/sidechain_address_evaluator.hpp>
+
+#include <graphene/chain/database.hpp>
+#include <graphene/chain/sidechain_address_object.hpp>
+#include <graphene/chain/hardfork.hpp>
+
+namespace graphene { namespace chain {
+
+void_result add_sidechain_address_evaluator::do_evaluate(const sidechain_address_add_operation& op)
+{ try{
+
+   const auto& idx = db().get_index_type<sidechain_address_index>().indices().get<by_account_and_network>();
+   FC_ASSERT( idx.find(boost::make_tuple(op.sidechain_address_account, op.sidechain)) == idx.end(), "Duplicated item" );
+   return void_result();
+} FC_CAPTURE_AND_RETHROW( (op) ) }
+
+object_id_type add_sidechain_address_evaluator::do_apply(const sidechain_address_add_operation& op)
+{ try {
+    const auto& new_sidechain_address_object = db().create<sidechain_address_object>( [&]( sidechain_address_object& obj ){
+        obj.sidechain_address_account = op.sidechain_address_account;
+        obj.sidechain = op.sidechain;
+        obj.address = op.address;
+        obj.private_key = op.private_key;
+        obj.public_key = op.public_key;
+    });
+    return new_sidechain_address_object.id;
+} FC_CAPTURE_AND_RETHROW( (op) ) }
+
+void_result update_sidechain_address_evaluator::do_evaluate(const sidechain_address_update_operation& op)
+{ try {
+    FC_ASSERT(db().get(op.sidechain_address_id).sidechain_address_account == op.sidechain_address_account);
+    const auto& idx = db().get_index_type<sidechain_address_index>().indices().get<by_id>();
+    FC_ASSERT( idx.find(op.sidechain_address_id) != idx.end() );
+    return void_result();
+} FC_CAPTURE_AND_RETHROW( (op) ) }
+
+object_id_type update_sidechain_address_evaluator::do_apply(const sidechain_address_update_operation& op)
+{ try {
+   const auto& idx = db().get_index_type<sidechain_address_index>().indices().get<by_id>();
+   auto itr = idx.find(op.sidechain_address_id);
+   if(itr != idx.end())
+   {
+       db().modify(*itr, [&op](sidechain_address_object &sao) {
+           if(op.address.valid()) sao.address = *op.address;
+           if(op.private_key.valid()) sao.private_key = *op.private_key;
+           if(op.public_key.valid()) sao.public_key = *op.public_key;
+       });
+   }
+   return op.sidechain_address_id;
+} FC_CAPTURE_AND_RETHROW( (op) ) }
+
+void_result delete_sidechain_address_evaluator::do_evaluate(const sidechain_address_delete_operation& op)
+{ try {
+    FC_ASSERT(db().get(op.sidechain_address_id).sidechain_address_account == op.sidechain_address_account);
+    const auto& idx = db().get_index_type<sidechain_address_index>().indices().get<by_id>();
+    FC_ASSERT( idx.find(op.sidechain_address_id) != idx.end() );
+    return void_result();
+} FC_CAPTURE_AND_RETHROW( (op) ) }
+
+void_result delete_sidechain_address_evaluator::do_apply(const sidechain_address_delete_operation& op)
+{ try {
+    const auto& idx = db().get_index_type<sidechain_address_index>().indices().get<by_id>();
+    auto sidechain_address = idx.find(op.sidechain_address_id);
+    if(sidechain_address != idx.end()) {
+       db().remove(*sidechain_address);
+    }
+    return void_result();
+} FC_CAPTURE_AND_RETHROW( (op) ) }
+
+} } // namespace graphene::chain
diff --git a/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/defs.hpp b/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/defs.hpp
index 1b6a9099..9104074f 100644
--- a/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/defs.hpp
+++ b/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/defs.hpp
@@ -8,9 +8,10 @@
 
 namespace graphene { namespace peerplays_sidechain {
 
-enum network {
+enum class sidechain_type {
    bitcoin,
-   //ethereum
+   //ethereum,
+   //eos
 };
 
 using bytes = std::vector<char>;
@@ -59,7 +60,7 @@ struct info_for_vin
 };
 
 struct sidechain_event_data {
-    network sidechain;
+    sidechain_type sidechain;
     std::string transaction_id;
     std::string from;
     std::string to;
diff --git a/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/peerplays_sidechain_plugin.hpp b/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/peerplays_sidechain_plugin.hpp
index 45628223..2f72ae06 100644
--- a/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/peerplays_sidechain_plugin.hpp
+++ b/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/peerplays_sidechain_plugin.hpp
@@ -5,6 +5,8 @@
 #include <graphene/chain/account_object.hpp>
 #include <graphene/chain/database.hpp>
 
+#include <graphene/peerplays_sidechain/defs.hpp>
+
 namespace graphene { namespace peerplays_sidechain {
 using namespace chain;
 
diff --git a/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/sidechain_net_handler.hpp b/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/sidechain_net_handler.hpp
index fa4f0b50..556ed3e4 100644
--- a/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/sidechain_net_handler.hpp
+++ b/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/sidechain_net_handler.hpp
@@ -16,7 +16,7 @@ public:
     std::vector<std::string> get_user_sidechain_address_mapping();
 
 protected:
-    graphene::peerplays_sidechain::network network;
+    graphene::peerplays_sidechain::sidechain_type sidechain;
 
     virtual std::string create_multisignature_wallet( const std::vector<std::string> public_keys ) = 0;
     virtual std::string transfer( const std::string& from, const std::string& to, const uint64_t amount ) = 0;
diff --git a/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/sidechain_net_manager.hpp b/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/sidechain_net_manager.hpp
index 49073314..3eb48263 100644
--- a/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/sidechain_net_manager.hpp
+++ b/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/sidechain_net_manager.hpp
@@ -14,7 +14,7 @@ public:
    sidechain_net_manager();
    virtual ~sidechain_net_manager();
 
-   bool create_handler(peerplays_sidechain::network network, const boost::program_options::variables_map& options);
+   bool create_handler(peerplays_sidechain::sidechain_type sidechain, const boost::program_options::variables_map& options);
 private:
 
    std::vector<std::unique_ptr<sidechain_net_handler>> net_handlers;
diff --git a/libraries/plugins/peerplays_sidechain/peerplays_sidechain_plugin.cpp b/libraries/plugins/peerplays_sidechain/peerplays_sidechain_plugin.cpp
index 9b993614..616add2d 100644
--- a/libraries/plugins/peerplays_sidechain/peerplays_sidechain_plugin.cpp
+++ b/libraries/plugins/peerplays_sidechain/peerplays_sidechain_plugin.cpp
@@ -80,7 +80,7 @@ void peerplays_sidechain_plugin::plugin_initialize(const boost::program_options:
       && options.count( "bitcoin-node-rpc-user" ) && options.count( "bitcoin-node-rpc-password" )
       && options.count( "bitcoin-address" ) && options.count( "bitcoin-public-key" ) && options.count( "bitcoin-private-key" ) )
    {
-      my->_net_manager.create_handler(network::bitcoin, options);
+      my->_net_manager.create_handler(sidechain_type::bitcoin, options);
    } else {
       wlog("Haven't set up bitcoin sidechain parameters");
    }
diff --git a/libraries/plugins/peerplays_sidechain/sidechain_net_handler.cpp b/libraries/plugins/peerplays_sidechain/sidechain_net_handler.cpp
index fefeacc1..6bdd1b03 100644
--- a/libraries/plugins/peerplays_sidechain/sidechain_net_handler.cpp
+++ b/libraries/plugins/peerplays_sidechain/sidechain_net_handler.cpp
@@ -11,8 +11,8 @@ sidechain_net_handler::~sidechain_net_handler() {
 std::vector<std::string> sidechain_net_handler::get_user_sidechain_address_mapping() {
    std::vector<std::string> result;
 
-   switch (network) {
-      case network::bitcoin:
+   switch (sidechain) {
+      case sidechain_type::bitcoin:
          result.push_back("2N5aFW5WFaYZLuJWx9RGziHBdEMj9Zf8s3J");
          result.push_back("2MxAnE469fhhdvUqUB7daU997VSearb2mn7");
          result.push_back("2NAYptFvTU8vJ1pC7CxvVA9R7D3NdBJHpwL");
diff --git a/libraries/plugins/peerplays_sidechain/sidechain_net_handler_bitcoin.cpp b/libraries/plugins/peerplays_sidechain/sidechain_net_handler_bitcoin.cpp
index 1fce21ea..deb528b8 100644
--- a/libraries/plugins/peerplays_sidechain/sidechain_net_handler_bitcoin.cpp
+++ b/libraries/plugins/peerplays_sidechain/sidechain_net_handler_bitcoin.cpp
@@ -188,7 +188,7 @@ void zmq_listener::handle_zmq() {
 
 sidechain_net_handler_bitcoin::sidechain_net_handler_bitcoin(const boost::program_options::variables_map& options) :
       sidechain_net_handler(options) {
-    network = peerplays_sidechain::network::bitcoin;
+    sidechain = sidechain_type::bitcoin;
 
    ip = options.at("bitcoin-node-ip").as<std::string>();
    zmq_port = options.at("bitcoin-node-zmq-port").as<uint32_t>();
diff --git a/libraries/plugins/peerplays_sidechain/sidechain_net_manager.cpp b/libraries/plugins/peerplays_sidechain/sidechain_net_manager.cpp
index e1c0bce6..6e28319c 100644
--- a/libraries/plugins/peerplays_sidechain/sidechain_net_manager.cpp
+++ b/libraries/plugins/peerplays_sidechain/sidechain_net_manager.cpp
@@ -13,13 +13,13 @@ sidechain_net_manager::~sidechain_net_manager() {
    ilog(__FUNCTION__);
 }
 
-bool sidechain_net_manager::create_handler(peerplays_sidechain::network network, const boost::program_options::variables_map& options) {
+bool sidechain_net_manager::create_handler(peerplays_sidechain::sidechain_type sidechain, const boost::program_options::variables_map& options) {
    ilog(__FUNCTION__);
 
    bool ret_val = false;
 
-   switch (network) {
-      case network::bitcoin: {
+   switch (sidechain) {
+      case sidechain_type::bitcoin: {
           std::unique_ptr<sidechain_net_handler> h = std::unique_ptr<sidechain_net_handler>(new sidechain_net_handler_bitcoin(options));
           net_handlers.push_back(std::move(h));
           ret_val = true;