diff --git a/CMakeLists.txt b/CMakeLists.txt
index 654eae37..c39ff3af 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,6 +15,9 @@ set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard")
 set(CMAKE_CXX_STANDARD_REQUIRED ON CACHE BOOL "Require C++ standard to be supported")
 set(CMAKE_POSITION_INDEPENDENT_CODE ON CACHE BOOL "compile as PIC by default")
 
+# set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -fno-omit-frame-pointer -fsanitize=address")
+# set (CMAKE_LINKER_FLAGS_DEBUG "${CMAKE_LINKER_FLAGS_DEBUG} -fno-omit-frame-pointer -fsanitize=address")
+
 option(HUNTER_ENABLED "Enable Hunter package manager" OFF)
 include("cmake/HunterGate.cmake")
 HunterGate(
diff --git a/resources/qml/UserProfile.qml b/resources/qml/UserProfile.qml
index a0b0f993..db44ec15 100644
--- a/resources/qml/UserProfile.qml
+++ b/resources/qml/UserProfile.qml
@@ -19,17 +19,6 @@ ApplicationWindow{
     Layout.alignment: Qt.AlignHCenter
     palette: colors
 
-    UserProfileList{
-        id: userProfileList
-        userId: user_data.userId
-        onUserIdChanged : {
-            userProfileList.updateDeviceList()
-        }
-        onDeviceListUpdated : {
-            modelDeviceList.deviceList = userProfileList
-        }
-    }
-
     Component {
 		id: deviceVerificationDialog
 		DeviceVerification {}
@@ -94,7 +83,7 @@ ApplicationWindow{
                     ToolTip.visible: hovered
 			        ToolTip.text: qsTr("Ban the user")
                     onClicked : {
-                        userProfileList.banUser()
+                        modelDeviceList.deviceList.banUser()
                     }
                 }
                 // ImageButton{
@@ -106,7 +95,7 @@ ApplicationWindow{
                 //     ToolTip.visible: hovered
 			    //     ToolTip.text: qsTr("Ignore messages from this user")
                 //     onClicked : {
-                //         userProfileList.ignoreUser()
+                //         modelDeviceList.deviceList.ignoreUser()
                 //     }
                 // }
                 ImageButton{
@@ -118,7 +107,7 @@ ApplicationWindow{
                     ToolTip.visible: hovered
 			        ToolTip.text: qsTr("Start a private chat")
                     onClicked : {
-                        userProfileList.startChat()
+                        modelDeviceList.deviceList.startChat()
                     }
                 }
                 ImageButton{
@@ -130,7 +119,7 @@ ApplicationWindow{
                     ToolTip.visible: hovered
 			        ToolTip.text: qsTr("Kick the user")
                     onClicked : {
-                        userProfileList.kickUser()
+                        modelDeviceList.deviceList.kickUser()
                     }
                 }
             }
@@ -142,14 +131,15 @@ ApplicationWindow{
                 Layout.alignment: Qt.AlignHCenter
 
                 ListView{
-                    id: deviceList
+                    id: devicelist
                     anchors.fill: parent
                     clip: true
                     spacing: 4
 
                     model: UserProfileModel{
                         id: modelDeviceList
-                    } 
+                        deviceList.userId : user_data.userId
+                    }
 
                     delegate: RowLayout{
                         width: parent.width
@@ -157,12 +147,20 @@ ApplicationWindow{
                             top : 50
                         }
                         ColumnLayout{
-                            Text{
-                                Layout.fillWidth: true
-                                color: colors.text
-                                font.bold: true
-                                Layout.alignment: Qt.AlignRight
-                                text: deviceID
+                            RowLayout{
+                                Text{
+                                    Layout.fillWidth: true
+                                    color: colors.text
+                                    font.bold: true
+                                    Layout.alignment: Qt.AlignLeft
+                                    text: deviceID
+                                }
+                                Text{
+                                    Layout.fillWidth: true
+                                    color:colors.text
+                                    Layout.alignment: Qt.AlignLeft
+                                    text: (verified_status ==  UserProfileList.VERIFIED?"V":(verified_status ==  UserProfileList.UNVERIFIED?"NV":"B"))
+                                }
                             }
                             Text{
                                 Layout.fillWidth: true
diff --git a/src/Cache.cpp b/src/Cache.cpp
index 5afeab06..553d1e97 100644
--- a/src/Cache.cpp
+++ b/src/Cache.cpp
@@ -2885,7 +2885,6 @@ Cache::statusMessage(const std::string &user_id)
 void
 to_json(json &j, const UserCache &info)
 {
-        j["user_id"]          = info.user_id;
         j["is_user_verified"] = info.is_user_verified;
         j["cross_verified"]   = info.cross_verified;
         j["keys"]             = info.keys;
@@ -2894,13 +2893,12 @@ to_json(json &j, const UserCache &info)
 void
 from_json(const json &j, UserCache &info)
 {
-        info.user_id          = j.at("user_id");
         info.is_user_verified = j.at("is_user_verified");
         info.cross_verified   = j.at("cross_verified").get<std::vector<std::string>>();
         info.keys             = j.at("keys").get<mtx::responses::QueryKeys>();
 }
 
-UserCache
+std::optional<UserCache>
 Cache::getUserCache(const std::string &user_id)
 {
         lmdb::val verifiedVal;
@@ -2909,14 +2907,15 @@ Cache::getUserCache(const std::string &user_id)
         auto db  = getUserCacheDb(txn);
         auto res = lmdb::dbi_get(txn, db, lmdb::val(user_id), verifiedVal);
 
+        txn.commit();
+
         UserCache verified_state;
         if (res) {
                 verified_state = json::parse(std::string(verifiedVal.data(), verifiedVal.size()));
+                return verified_state;
+        } else {
+                return {};
         }
-
-        txn.commit();
-
-        return verified_state;
 }
 
 //! be careful when using make sure is_user_verified is not changed
@@ -2948,18 +2947,18 @@ Cache::deleteUserCache(const std::string &user_id)
 void
 to_json(json &j, const DeviceVerifiedCache &info)
 {
-        j["user_id"]         = info.user_id;
         j["device_verified"] = info.device_verified;
+        j["device_blocked"]  = info.device_blocked;
 }
 
 void
 from_json(const json &j, DeviceVerifiedCache &info)
 {
-        info.user_id         = j.at("user_id");
         info.device_verified = j.at("device_verified").get<std::vector<std::string>>();
+        info.device_blocked  = j.at("device_blocked").get<std::vector<std::string>>();
 }
 
-DeviceVerifiedCache
+std::optional<DeviceVerifiedCache>
 Cache::getVerifiedCache(const std::string &user_id)
 {
         lmdb::val verifiedVal;
@@ -2968,14 +2967,15 @@ Cache::getVerifiedCache(const std::string &user_id)
         auto db  = getDeviceVerifiedDb(txn);
         auto res = lmdb::dbi_get(txn, db, lmdb::val(user_id), verifiedVal);
 
+        txn.commit();
+
         DeviceVerifiedCache verified_state;
         if (res) {
                 verified_state = json::parse(std::string(verifiedVal.data(), verifiedVal.size()));
+                return verified_state;
+        } else {
+                return {};
         }
-
-        txn.commit();
-
-        return verified_state;
 }
 
 int
@@ -3172,7 +3172,7 @@ statusMessage(const std::string &user_id)
 {
         return instance_->statusMessage(user_id);
 }
-UserCache
+std::optional<UserCache>
 getUserCache(const std::string &user_id)
 {
         return instance_->getUserCache(user_id);
@@ -3190,7 +3190,7 @@ deleteUserCache(const std::string &user_id)
         return instance_->deleteUserCache(user_id);
 }
 
-DeviceVerifiedCache
+std::optional<DeviceVerifiedCache>
 getVerifiedCache(const std::string &user_id)
 {
         return instance_->getVerifiedCache(user_id);
diff --git a/src/Cache.h b/src/Cache.h
index 34e79ab5..0c955c92 100644
--- a/src/Cache.h
+++ b/src/Cache.h
@@ -61,7 +61,7 @@ std::string
 statusMessage(const std::string &user_id);
 
 //! user Cache
-UserCache
+std::optional<UserCache>
 getUserCache(const std::string &user_id);
 
 int
@@ -71,7 +71,7 @@ int
 deleteUserCache(const std::string &user_id);
 
 //! verified Cache
-DeviceVerifiedCache
+std::optional<DeviceVerifiedCache>
 getVerifiedCache(const std::string &user_id);
 
 int
diff --git a/src/CacheCryptoStructs.h b/src/CacheCryptoStructs.h
index 7344aef9..241cac76 100644
--- a/src/CacheCryptoStructs.h
+++ b/src/CacheCryptoStructs.h
@@ -68,8 +68,6 @@ struct OlmSessionStorage
 
 struct UserCache
 {
-        //! user_id of the user
-        std::string user_id;
         //! this stores if the user is verified (with cross-signing)
         bool is_user_verified = false;
         //! list of verified device_ids with cross-signing
@@ -85,10 +83,9 @@ from_json(const nlohmann::json &j, UserCache &info);
 
 struct DeviceVerifiedCache
 {
-        //! user_id of the user
-        std::string user_id;
         //! list of verified device_ids with device-verification
         std::vector<std::string> device_verified;
+        std::vector<std::string> device_blocked;
 };
 
 void
diff --git a/src/Cache_p.h b/src/Cache_p.h
index cf4416ce..60fa930f 100644
--- a/src/Cache_p.h
+++ b/src/Cache_p.h
@@ -55,12 +55,12 @@ public:
         std::string statusMessage(const std::string &user_id);
 
         // user cache stores user keys
-        UserCache getUserCache(const std::string &user_id);
+        std::optional<UserCache> getUserCache(const std::string &user_id);
         int setUserCache(const std::string &user_id, const UserCache &body);
         int deleteUserCache(const std::string &user_id);
 
         // device verified cache
-        DeviceVerifiedCache getVerifiedCache(const std::string &user_id);
+        std::optional<DeviceVerifiedCache> getVerifiedCache(const std::string &user_id);
         int setVerifiedCache(const std::string &user_id, const DeviceVerifiedCache &body);
 
         static void removeDisplayName(const QString &room_id, const QString &user_id);
diff --git a/src/ui/UserProfile.cpp b/src/ui/UserProfile.cpp
index c637280b..8c6fb8e4 100644
--- a/src/ui/UserProfile.cpp
+++ b/src/ui/UserProfile.cpp
@@ -7,11 +7,25 @@
 
 #include <iostream> // only for debugging
 
+Q_DECLARE_METATYPE(UserProfile::Status)
+
 UserProfile::UserProfile(QObject *parent)
   : QObject(parent)
-{}
+{
+        qRegisterMetaType<UserProfile::Status>();
+        connect(
+          this, &UserProfile::updateDeviceList, this, [this]() { fetchDeviceList(this->userId); });
+        connect(
+          this,
+          &UserProfile::appendDeviceList,
+          this,
+          [this](QString device_id, QString device_name, UserProfile::Status verification_status) {
+                  this->deviceList.push_back(
+                    DeviceInfo{device_id, device_name, verification_status});
+          });
+}
 
-QVector<DeviceInfo>
+std::vector<DeviceInfo>
 UserProfile::getDeviceList()
 {
         return this->deviceList;
@@ -37,7 +51,8 @@ UserProfile::setUserId(const QString &user_id)
 void
 UserProfile::callback_fn(const mtx::responses::QueryKeys &res,
                          mtx::http::RequestErr err,
-                         std::string user_id)
+                         std::string user_id,
+                         std::optional<std::vector<std::string>> cross_verified)
 {
         if (err) {
                 nhlog::net()->warn("failed to query device keys: {},{}",
@@ -52,24 +67,40 @@ UserProfile::callback_fn(const mtx::responses::QueryKeys &res,
         }
 
         auto devices = res.device_keys.at(user_id);
-        QVector<DeviceInfo> deviceInfo;
+        std::vector<DeviceInfo> deviceInfo;
+        auto device_verified = cache::getVerifiedCache(user_id);
 
         for (const auto &d : devices) {
                 auto device = d.second;
 
                 // TODO: Verify signatures and ignore those that don't pass.
-                DeviceInfo newdevice(
-                  QString::fromStdString(d.first),
-                  QString::fromStdString(device.unsigned_info.device_display_name));
-                QString::fromStdString(device.unsigned_info.device_display_name);
+                UserProfile::Status verified = UserProfile::Status::UNVERIFIED;
+                if (cross_verified.has_value()) {
+                        if (std::find(cross_verified->begin(), cross_verified->end(), d.first) !=
+                            cross_verified->end())
+                                verified = UserProfile::Status::VERIFIED;
+                } else if (device_verified.has_value()) {
+                        if (std::find(device_verified->device_verified.begin(),
+                                      device_verified->device_verified.end(),
+                                      d.first) != device_verified->device_verified.end())
+                                verified = UserProfile::Status::VERIFIED;
+                } else if (device_verified.has_value()) {
+                        if (std::find(device_verified->device_blocked.begin(),
+                                      device_verified->device_blocked.end(),
+                                      d.first) != device_verified->device_blocked.end())
+                                verified = UserProfile::Status::BLOCKED;
+                }
 
-                deviceInfo.append(std::move(newdevice));
+                emit UserProfile::appendDeviceList(
+                  QString::fromStdString(d.first),
+                  QString::fromStdString(device.unsigned_info.device_display_name),
+                  verified);
         }
 
-        std::sort(
-          deviceInfo.begin(), deviceInfo.end(), [](const DeviceInfo &a, const DeviceInfo &b) {
-                  return a.device_id > b.device_id;
-          });
+        // std::sort(
+        //   deviceInfo.begin(), deviceInfo.end(), [](const DeviceInfo &a, const DeviceInfo &b) {
+        //           return a.device_id > b.device_id;
+        //   });
 
         this->deviceList = std::move(deviceInfo);
         emit UserProfile::deviceListUpdated();
@@ -81,9 +112,9 @@ UserProfile::fetchDeviceList(const QString &userID)
         auto localUser  = utils::localUser();
         auto user_cache = cache::getUserCache(userID.toStdString());
 
-        if (user_cache.user_id == userID.toStdString()) {
-                mtx::http::ClientError error;
-                this->callback_fn(user_cache.keys, std::move(error), userID.toStdString());
+        if (user_cache.has_value()) {
+                this->callback_fn(
+                  user_cache->keys, {}, userID.toStdString(), user_cache->cross_verified);
         } else {
                 mtx::requests::QueryKeys req;
                 req.device_keys[userID.toStdString()] = {};
@@ -91,17 +122,11 @@ UserProfile::fetchDeviceList(const QString &userID)
                   req,
                   [user_id = userID.toStdString(), this](const mtx::responses::QueryKeys &res,
                                                          mtx::http::RequestErr err) {
-                          this->callback_fn(res, err, user_id);
+                          this->callback_fn(res, err, user_id, {});
                   });
         }
 }
 
-void
-UserProfile::updateDeviceList()
-{
-        fetchDeviceList(this->userId);
-}
-
 void
 UserProfile::banUser()
 {
diff --git a/src/ui/UserProfile.h b/src/ui/UserProfile.h
index befd82ec..1725b961 100644
--- a/src/ui/UserProfile.h
+++ b/src/ui/UserProfile.h
@@ -5,36 +5,32 @@
 #include <QVector>
 
 #include "MatrixClient.h"
-class DeviceInfo
-{
-public:
-        DeviceInfo(const QString deviceID, const QString displayName)
-          : device_id(deviceID)
-          , display_name(displayName)
-        {}
 
-        DeviceInfo() {}
-
-        QString device_id;
-        QString display_name;
-};
+class DeviceInfo;
 
 class UserProfile : public QObject
 {
         Q_OBJECT
         Q_PROPERTY(QString userId READ getUserId WRITE setUserId NOTIFY userIdChanged)
-        Q_PROPERTY(QVector<DeviceInfo> deviceList READ getDeviceList NOTIFY deviceListUpdated)
+        Q_PROPERTY(std::vector<DeviceInfo> deviceList READ getDeviceList NOTIFY deviceListUpdated)
 public:
         // constructor
         explicit UserProfile(QObject *parent = 0);
         // getters
-        QVector<DeviceInfo> getDeviceList();
+        std::vector<DeviceInfo> getDeviceList();
         QString getUserId();
         // setters
         void setUserId(const QString &userId);
 
-        Q_INVOKABLE void fetchDeviceList(const QString &userID);
-        Q_INVOKABLE void updateDeviceList();
+        enum Status
+        {
+                VERIFIED,
+                UNVERIFIED,
+                BLOCKED
+        };
+        Q_ENUM(Status)
+
+        void fetchDeviceList(const QString &userID);
         Q_INVOKABLE void banUser();
         // Q_INVOKABLE void ignoreUser();
         Q_INVOKABLE void kickUser();
@@ -43,12 +39,34 @@ public:
 signals:
         void userIdChanged();
         void deviceListUpdated();
+        void updateDeviceList();
+        void appendDeviceList(const QString device_id,
+                              const QString device_naem,
+                              const UserProfile::Status verification_status);
 
 private:
-        QVector<DeviceInfo> deviceList;
+        std::vector<DeviceInfo> deviceList;
         QString userId;
+        std::optional<std::string> cross_verified;
 
         void callback_fn(const mtx::responses::QueryKeys &res,
                          mtx::http::RequestErr err,
-                         std::string user_id);
+                         std::string user_id,
+                         std::optional<std::vector<std::string>> cross_verified);
+};
+
+class DeviceInfo
+{
+public:
+        DeviceInfo(const QString deviceID,
+                   const QString displayName,
+                   UserProfile::Status verification_status_)
+          : device_id(deviceID)
+          , display_name(displayName)
+          , verification_status(verification_status_)
+        {}
+
+        QString device_id;
+        QString display_name;
+        UserProfile::Status verification_status;
 };
\ No newline at end of file
diff --git a/src/ui/UserProfileModel.cpp b/src/ui/UserProfileModel.cpp
index ec0456cd..3fa8fe2d 100644
--- a/src/ui/UserProfileModel.cpp
+++ b/src/ui/UserProfileModel.cpp
@@ -1,11 +1,23 @@
 #include "UserProfileModel.h"
-#include "UserProfile.h"
 #include <QModelIndex>
 
 UserProfileModel::UserProfileModel(QObject *parent)
   : QAbstractListModel(parent)
   , deviceList(nullptr)
-{}
+{
+        this->deviceList = new UserProfile(this);
+
+        connect(this->deviceList, &UserProfile::userIdChanged, this, [this]() {
+                emit this->deviceList->updateDeviceList();
+        });
+        connect(this->deviceList, &UserProfile::deviceListUpdated, this, [this]() {
+                beginResetModel();
+                this->beginInsertRows(
+                  QModelIndex(), 0, this->deviceList->getDeviceList().size() - 1);
+                this->endInsertRows();
+                endResetModel();
+        });
+}
 
 int
 UserProfileModel::rowCount(const QModelIndex &parent) const
@@ -18,7 +30,8 @@ UserProfileModel::rowCount(const QModelIndex &parent) const
 QVariant
 UserProfileModel::data(const QModelIndex &index, int role) const
 {
-        if (!index.isValid() || !this->deviceList)
+        if (!index.isValid() &&
+            static_cast<int>(this->deviceList->getDeviceList().size()) <= index.row())
                 return QVariant();
 
         const DeviceInfo device = this->deviceList->getDeviceList().at(index.row());
@@ -27,6 +40,8 @@ UserProfileModel::data(const QModelIndex &index, int role) const
                 return QVariant(device.device_id);
         case DISPLAYNAME:
                 return QVariant(device.display_name);
+        case VERIFIED_STATUS:
+                return device.verification_status;
         }
         return QVariant();
 }
@@ -35,8 +50,9 @@ QHash<int, QByteArray>
 UserProfileModel::roleNames() const
 {
         QHash<int, QByteArray> names;
-        names[DEVICEID]    = "deviceID";
-        names[DISPLAYNAME] = "displayName";
+        names[DEVICEID]        = "deviceID";
+        names[DISPLAYNAME]     = "displayName";
+        names[VERIFIED_STATUS] = "verified_status";
         return names;
 }
 
@@ -45,22 +61,3 @@ UserProfileModel::getList() const
 {
         return (this->deviceList);
 }
-
-void
-UserProfileModel::setList(UserProfile *devices)
-{
-        beginResetModel();
-
-        if (devices)
-                devices->disconnect(this);
-
-        if (this->deviceList) {
-                const int index = this->deviceList->getDeviceList().size();
-                beginInsertRows(QModelIndex(), index, index);
-                endInsertRows();
-        }
-
-        this->deviceList = devices;
-
-        endResetModel();
-}
\ No newline at end of file
diff --git a/src/ui/UserProfileModel.h b/src/ui/UserProfileModel.h
index c21a806d..ba7a2525 100644
--- a/src/ui/UserProfileModel.h
+++ b/src/ui/UserProfileModel.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include "UserProfile.h"
 #include <QAbstractListModel>
 
 class UserProfile; // forward declaration of the class UserProfile
@@ -7,7 +8,7 @@ class UserProfile; // forward declaration of the class UserProfile
 class UserProfileModel : public QAbstractListModel
 {
         Q_OBJECT
-        Q_PROPERTY(UserProfile *deviceList READ getList WRITE setList)
+        Q_PROPERTY(UserProfile *deviceList READ getList)
 
 public:
         explicit UserProfileModel(QObject *parent = nullptr);
@@ -15,10 +16,10 @@ public:
         enum
         {
                 DEVICEID,
-                DISPLAYNAME
+                DISPLAYNAME,
+                VERIFIED_STATUS
         };
         UserProfile *getList() const;
-        void setList(UserProfile *devices);
 
         int rowCount(const QModelIndex &parent = QModelIndex()) const override;
         QVariant data(const QModelIndex &index, int role) const override;