diff --git a/src/wallet/api/CMakeLists.txt b/src/wallet/api/CMakeLists.txt
index 1e67495f1..d6f2bf6b7 100644
--- a/src/wallet/api/CMakeLists.txt
+++ b/src/wallet/api/CMakeLists.txt
@@ -69,6 +69,7 @@ target_link_libraries(wallet_api
     common
     cryptonote_core
     mnemonics
+    ${LMDB_LIBRARY}
     ${Boost_CHRONO_LIBRARY}
     ${Boost_SERIALIZATION_LIBRARY}
     ${Boost_FILESYSTEM_LIBRARY}
diff --git a/src/wallet/api/wallet.cpp b/src/wallet/api/wallet.cpp
index fb9e8b28b..64407a341 100644
--- a/src/wallet/api/wallet.cpp
+++ b/src/wallet/api/wallet.cpp
@@ -68,6 +68,15 @@ namespace {
     static const int    DEFAULT_REMOTE_NODE_REFRESH_INTERVAL_MILLIS = 1000 * 10;
     // Connection timeout 30 sec
     static const int    DEFAULT_CONNECTION_TIMEOUT_MILLIS = 1000 * 30;
+
+    std::string get_default_ringdb_path()
+    {
+      boost::filesystem::path dir = tools::get_default_data_dir();
+      // remove .bitmonero, replace with .shared-ringdb
+      dir = dir.remove_filename();
+      dir /= ".shared-ringdb";
+      return dir.string();
+    }
 }
 
 struct Wallet2CallbackImpl : public tools::i_wallet2_callback
@@ -590,6 +599,7 @@ bool WalletImpl::open(const std::string &path, const std::string &password)
             // Rebuilding wallet cache, using refresh height from .keys file
             m_rebuildWalletCache = true;
         }
+        m_wallet->set_ring_database(get_default_ringdb_path());
         m_wallet->load(path, password);
 
         m_password = password;
@@ -1777,6 +1787,7 @@ void WalletImpl::doRefresh()
             if (m_history->count() == 0) {
                 m_history->refresh();
             }
+            m_wallet->find_and_save_rings(false);
         } else {
            LOG_PRINT_L3(__FUNCTION__ << ": skipping refresh - daemon is not synced");
         }
@@ -1897,6 +1908,50 @@ bool WalletImpl::useForkRules(uint8_t version, int64_t early_blocks) const
     return m_wallet->use_fork_rules(version,early_blocks);
 }
 
+bool WalletImpl::blackballOutputs(const std::vector<std::string> &pubkeys, bool add)
+{
+    std::vector<crypto::public_key> raw_pubkeys;
+    raw_pubkeys.reserve(pubkeys.size());
+    for (const std::string &str: pubkeys)
+    {
+        crypto::public_key pkey;
+        if (!epee::string_tools::hex_to_pod(str, pkey))
+        {
+            m_status = Status_Error;
+            m_errorString = tr("Failed to parse output public key");
+            return false;
+        }
+        raw_pubkeys.push_back(pkey);
+    }
+    bool ret = m_wallet->set_blackballed_outputs(raw_pubkeys, add);
+    if (!ret)
+    {
+        m_status = Status_Error;
+        m_errorString = tr("Failed to set blackballed outputs");
+        return false;
+    }
+    return true;
+}
+
+bool WalletImpl::unblackballOutput(const std::string &pubkey)
+{
+    crypto::public_key raw_pubkey;
+    if (!epee::string_tools::hex_to_pod(pubkey, raw_pubkey))
+    {
+        m_status = Status_Error;
+        m_errorString = tr("Failed to parse output public key");
+        return false;
+    }
+    bool ret = m_wallet->unblackball_output(raw_pubkey);
+    if (!ret)
+    {
+        m_status = Status_Error;
+        m_errorString = tr("Failed to unblackball output");
+        return false;
+    }
+    return true;
+}
+
 } // namespace
 
 namespace Bitmonero = Monero;
diff --git a/src/wallet/api/wallet.h b/src/wallet/api/wallet.h
index 9b4a0cc12..2bc34c592 100644
--- a/src/wallet/api/wallet.h
+++ b/src/wallet/api/wallet.h
@@ -163,6 +163,8 @@ public:
     virtual std::string getDefaultDataDir() const;
     virtual bool lightWalletLogin(bool &isNewWallet) const;
     virtual bool lightWalletImportWalletRequest(std::string &payment_id, uint64_t &fee, bool &new_request, bool &request_fulfilled, std::string &payment_address, std::string &status);
+    virtual bool blackballOutputs(const std::vector<std::string> &pubkeys, bool add);
+    virtual bool unblackballOutput(const std::string &pubkey);
 
 private:
     void clearStatus() const;
diff --git a/src/wallet/api/wallet2_api.h b/src/wallet/api/wallet2_api.h
index 87c1cccfa..df74e5885 100644
--- a/src/wallet/api/wallet2_api.h
+++ b/src/wallet/api/wallet2_api.h
@@ -33,6 +33,7 @@
 
 #include <string>
 #include <vector>
+#include <list>
 #include <set>
 #include <ctime>
 #include <iostream>
@@ -756,6 +757,12 @@ struct Wallet
     */
     virtual bool rescanSpent() = 0;
     
+    //! blackballs a set of outputs
+    virtual bool blackballOutputs(const std::vector<std::string> &pubkeys, bool add) = 0;
+
+    //! unblackballs an output
+    virtual bool unblackballOutput(const std::string &pubkey) = 0;
+
     //! Light wallet authenticate and login
     virtual bool lightWalletLogin(bool &isNewWallet) const = 0;