diff --git a/lib/ucoinpy/api/bma/tx/history/__init__.py b/lib/ucoinpy/api/bma/tx/history/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..b0e42968a817b6560c80602afca9587738640d00
--- /dev/null
+++ b/lib/ucoinpy/api/bma/tx/history/__init__.py
@@ -0,0 +1,32 @@
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Authors:
+# Caner Candan <caner@candan.fr>, http://caner.candan.fr
+#
+
+from .. import History, logging
+
+logger = logging.getLogger("ucoin/tx")
+
+
+class Blocks(History):
+    def __init__(self, conn_handler, pubkey, from_, to_, module='tx'):
+        super(Blocks, self).__init__(conn_handler, pubkey, module)
+        self.from_ = from_
+        self.to_ = to_
+
+    def __get__(self, **kwargs):
+        r = yield from self.requests_get('/history/%s/blocks/%s/%s' % (self.pubkey, self.from_, self.to_), **kwargs)
+        return (yield from r.json())
\ No newline at end of file
diff --git a/lib/ucoinpy/api/bma/ud/__init__.py b/lib/ucoinpy/api/bma/ud/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..33f51b2ff52f9b1faaa1bf7ae2e718aec82783cf
--- /dev/null
+++ b/lib/ucoinpy/api/bma/ud/__init__.py
@@ -0,0 +1,39 @@
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Authors:
+# Caner Candan <caner@candan.fr>, http://caner.candan.fr
+#
+
+from .. import API, logging
+
+logger = logging.getLogger("ucoin/ud")
+
+
+class Ud(API):
+    def __init__(self, conn_handler, module='ud'):
+        super(Ud, self).__init__(conn_handler, module)
+
+
+class History(Ud):
+    """Get UD history."""
+
+    def __init__(self, conn_handler, pubkey, module='ud'):
+        super(Ud, self).__init__(conn_handler, module)
+        self.pubkey = pubkey
+
+    def __get__(self, **kwargs):
+        assert self.pubkey is not None
+        r = yield from self.requests_get('/history/%s' % self.pubkey, **kwargs)
+        return (yield from r.json())
diff --git a/src/cutecoin/core/account.py b/src/cutecoin/core/account.py
index 3c19370748969ad4c1025930a52d985284e9e4a6..93d3f9492032c3510f1dbbd687ebce6c30311f59 100644
--- a/src/cutecoin/core/account.py
+++ b/src/cutecoin/core/account.py
@@ -84,7 +84,7 @@ class Account(QObject):
         return account
 
     @classmethod
-    def load(cls, json_data, network_manager, identities_registry):
+    def load(cls, json_data, identities_registry):
         """
         Factory method to create an Account object from its json view.
         :rtype : cutecoin.core.account.Account
@@ -108,7 +108,7 @@ class Account(QObject):
 
         communities = []
         for data in json_data['communities']:
-            community = Community.load(network_manager, data)
+            community = Community.load(data)
             communities.append(community)
 
         account = cls(salt, pubkey, name, communities, wallets,
diff --git a/src/cutecoin/core/app.py b/src/cutecoin/core/app.py
index 75721e8b5a4689da4fbb012f1ca1dcd618f5bec4..724b74183ec7b94e4eca2e03b71c107d528ec69b 100644
--- a/src/cutecoin/core/app.py
+++ b/src/cutecoin/core/app.py
@@ -33,12 +33,11 @@ class Application(QObject):
 
     version_requested = pyqtSignal()
 
-    def __init__(self, qapp, loop, network_manager, identities_registry):
+    def __init__(self, qapp, loop, identities_registry):
         """
         Init a new "cutecoin" application
         :param QCoreApplication qapp: Qt Application
         :param quamash.QEventLoop loop: quamash.QEventLoop instance
-        :param QNetworkAccessManager network_manager: QNetworkAccessManager instance
         :param IdentitiesRegistry identities_registry: IdentitiesRegistry instance
         :return:
         """
@@ -52,7 +51,6 @@ class Application(QObject):
                                   __version__,
                                   "")
         self._identities_registry = identities_registry
-        self._network_manager = network_manager
         self.preferences = {'account': "",
                             'lang': 'en_GB',
                             'ref': 0,
@@ -70,9 +68,8 @@ class Application(QObject):
     @classmethod
     def startup(cls, argv, qapp, loop):
         config.parse_arguments(argv)
-        network_manager = QNetworkAccessManager()
         identities_registry = IdentitiesRegistry()
-        app = cls(qapp, loop, network_manager, identities_registry)
+        app = cls(qapp, loop, identities_registry)
         app.load()
         app.switch_language()
         if app.preferences['enable_proxy'] is True:
@@ -81,7 +78,7 @@ class Application(QObject):
             qtproxy = QNetworkProxy(proxytypes[app.preferences.get('proxy_type', "HTTP")],
                                     app.preferences['proxy_address'],
                                     app.preferences['proxy_port'])
-            network_manager.setProxy(qtproxy)
+            #network_manager.setProxy(qtproxy)
 
         if app.preferences["account"] != "":
             account = app.get_account(app.preferences["account"])
@@ -145,10 +142,6 @@ class Application(QObject):
     def identities_registry(self):
         return self._identities_registry
 
-    @property
-    def network_manager(self):
-        return self._network_manager
-
     def add_account(self, account):
         self.accounts[account.name] = account
 
@@ -465,9 +458,9 @@ class Application(QObject):
 
     def get_last_version(self):
         url = QUrl("https://api.github.com/repos/ucoin-io/cutecoin/releases")
-        request = QNetworkRequest(url)
+        """request = QNetworkRequest(url)
         reply = self._network_manager.get(request)
-        reply.finished.connect(self.read_available_version)
+        reply.finished.connect(self.read_available_version)"""
 
     @pyqtSlot(QNetworkReply)
     def read_available_version(self):
diff --git a/src/cutecoin/core/community.py b/src/cutecoin/core/community.py
index 07dd45b6e07aff5fe01b265b8ce988b837e187dc..e7ff00775df0a583f7895817a419f57dc6d2bed4 100644
--- a/src/cutecoin/core/community.py
+++ b/src/cutecoin/core/community.py
@@ -44,27 +44,27 @@ class Community(QObject):
         self._bma_access = bma_access
 
     @classmethod
-    def create(cls, network_manager, node):
+    def create(cls, node):
         """
         Create a community from its first node.
 
         :param node: The first Node of the community
         """
-        network = Network.create(network_manager, node)
+        network = Network.create(node)
         bma_access = BmaAccess.create(network)
         community = cls(node.currency, network, bma_access)
         logging.debug("Creating community")
         return community
 
     @classmethod
-    def load(cls, network_manager, json_data):
+    def load(cls, json_data):
         """
         Load a community from json
 
         :param dict json_data: The community as a dict in json format
         """
         currency = json_data['currency']
-        network = Network.from_json(network_manager, currency, json_data['peers'])
+        network = Network.from_json(currency, json_data['peers'])
         bma_access = BmaAccess.create(network)
         community = cls(currency, network, bma_access)
         return community
diff --git a/src/cutecoin/core/net/network.py b/src/cutecoin/core/net/network.py
index 49cc2be80c95e63a1a892a58f694efa57c2a9cd4..c079892aeafa964e79a9757cb01cf5686bcbddad 100644
--- a/src/cutecoin/core/net/network.py
+++ b/src/cutecoin/core/net/network.py
@@ -26,7 +26,7 @@ class Network(QObject):
     nodes_changed = pyqtSignal()
     new_block_mined = pyqtSignal(int)
 
-    def __init__(self, network_manager, currency, nodes):
+    def __init__(self, currency, nodes):
         """
         Constructor of a network
 
@@ -40,12 +40,11 @@ class Network(QObject):
             self.add_node(n)
         self.currency = currency
         self._must_crawl = False
-        self.network_manager = network_manager
         self._block_found = self.latest_block_hash
         self._timer = QTimer()
 
     @classmethod
-    def create(cls, network_manager, node):
+    def create(cls, node):
         """
         Create a new network with one knew node
         Crawls the nodes from the first node to build the
@@ -54,7 +53,7 @@ class Network(QObject):
         :param node: The first knew node of the network
         """
         nodes = [node]
-        network = cls(network_manager, node.currency, nodes)
+        network = cls(node.currency, nodes)
         return network
 
     def merge_with_json(self, json_data):
@@ -65,7 +64,7 @@ class Network(QObject):
         :param dict json_data: Nodes in json format
         """
         for data in json_data:
-            node = Node.from_json(self.network_manager, self.currency, data)
+            node = Node.from_json(self.currency, data)
             if node.pubkey not in [n.pubkey for n in self.nodes]:
                 self.add_node(node)
                 logging.debug("Loading : {:}".format(data['pubkey']))
@@ -86,7 +85,7 @@ class Network(QObject):
                     other_node.state = node.state
 
     @classmethod
-    def from_json(cls, network_manager, currency, json_data):
+    def from_json(cls, currency, json_data):
         """
         Load a network from a configured community
 
@@ -95,9 +94,9 @@ class Network(QObject):
         """
         nodes = []
         for data in json_data:
-            node = Node.from_json(network_manager, currency, data)
+            node = Node.from_json(currency, data)
             nodes.append(node)
-        network = cls(network_manager, currency, nodes)
+        network = cls(currency, nodes)
         # We block the signals until loading the nodes cache
         return network
 
@@ -320,7 +319,7 @@ class Network(QObject):
         pubkeys = [n.pubkey for n in self.nodes]
         if peer.pubkey not in pubkeys:
             logging.debug("New node found : {0}".format(peer.pubkey[:5]))
-            node = Node.from_peer(self.network_manager, self.currency, peer, pubkey)
+            node = Node.from_peer(self.currency, peer, pubkey)
             self.add_node(node)
             self.nodes_changed.emit()
 
diff --git a/src/cutecoin/core/net/node.py b/src/cutecoin/core/net/node.py
index d90f29a280b1b6cc3d0b3a4d8f5e7aac1fb69367..f8b5f9b2ddd4b7dfaa2565a6d4eef44ce587376b 100644
--- a/src/cutecoin/core/net/node.py
+++ b/src/cutecoin/core/net/node.py
@@ -38,13 +38,12 @@ class Node(QObject):
     changed = pyqtSignal()
     neighbour_found = pyqtSignal(Peer, str)
 
-    def __init__(self, network_manager, currency, endpoints, uid, pubkey, block,
+    def __init__(self, currency, endpoints, uid, pubkey, block,
                  state, last_change, last_merkle, software, version, fork_window):
         """
         Constructor
         """
         super().__init__()
-        self.network_manager = network_manager
         self._endpoints = endpoints
         self._uid = uid
         self._pubkey = pubkey
@@ -60,7 +59,7 @@ class Node(QObject):
 
     @classmethod
     @asyncio.coroutine
-    def from_address(cls, network_manager, currency, address, port):
+    def from_address(cls, currency, address, port):
         """
         Factory method to get a node from a given address
 
@@ -78,7 +77,7 @@ class Node(QObject):
             if peer.currency != currency:
                 raise InvalidNodeCurrency(peer.currency, currency)
 
-        node = cls(network_manager, peer.currency,
+        node = cls(peer.currency,
                    [Endpoint.from_inline(e.inline()) for e in peer.endpoints],
                    "", peer.pubkey, None, Node.ONLINE, time.time(),
                    {'root': "", 'leaves': []}, "", "", 0)
@@ -86,7 +85,7 @@ class Node(QObject):
         return node
 
     @classmethod
-    def from_peer(cls, network_manager, currency, peer, pubkey):
+    def from_peer(cls, currency, peer, pubkey):
         """
         Factory method to get a node from a peer document.
 
@@ -98,7 +97,7 @@ class Node(QObject):
             if peer.currency != currency:
                 raise InvalidNodeCurrency(peer.currency, currency)
 
-        node = cls(network_manager, peer.currency, peer.endpoints,
+        node = cls(peer.currency, peer.endpoints,
                    "", pubkey, bma.blockchain.Block.null_value,
                    Node.ONLINE, time.time(),
                    {'root': "", 'leaves': []},
@@ -107,7 +106,7 @@ class Node(QObject):
         return node
 
     @classmethod
-    def from_json(cls, network_manager, currency, data):
+    def from_json(cls, currency, data):
         endpoints = []
         uid = ""
         pubkey = ""
@@ -148,7 +147,7 @@ class Node(QObject):
         if 'fork_window' in data:
             fork_window = data['fork_window']
 
-        node = cls(network_manager, currency, endpoints,
+        node = cls(currency, endpoints,
                    uid, pubkey, block,
                    state, last_change,
                    {'root': "", 'leaves': []},
diff --git a/src/cutecoin/gui/process_cfg_community.py b/src/cutecoin/gui/process_cfg_community.py
index 9e6625960a595767f39dd06b803ec80d81f385fa..8a102051e526991b89ee72660115920f60522682 100644
--- a/src/cutecoin/gui/process_cfg_community.py
+++ b/src/cutecoin/gui/process_cfg_community.py
@@ -59,9 +59,9 @@ class StepPageInit(Step):
         server = self.config_dialog.lineedit_server.text()
         port = self.config_dialog.spinbox_port.value()
         logging.debug("Is valid ? ")
-        self.node = yield from Node.from_address(self.config_dialog.app.network_manager, None, server, port)
+        self.node = yield from Node.from_address(None, server, port)
         if self.node:
-            community = Community.create(self.app.network_manager, self.node)
+            community = Community.create(self.node)
             identity = yield from self.app.identities_registry.future_find(self.account.pubkey, community)
             if identity.blockchain_state == BlockchainState.NOT_FOUND:
                 self.config_dialog.label_error.setText(self.tr("Could not find your identity on the network."))
@@ -81,9 +81,9 @@ class StepPageInit(Step):
         server = self.config_dialog.lineedit_server.text()
         port = self.config_dialog.spinbox_port.value()
         logging.debug("Is valid ? ")
-        self.node = yield from Node.from_address(self.config_dialog.app.network_manager, None, server, port)
+        self.node = yield from Node.from_address(None, server, port)
         if self.node:
-            community = Community.create(self.app.network_manager, self.node)
+            community = Community.create(self.node)
             identity = yield from self.app.identities_registry.future_find(self.account.pubkey, community)
             if identity.blockchain_state == BlockchainState.NOT_FOUND:
                 password = yield from self.password_asker.future_exec()
@@ -138,7 +138,7 @@ class StepPageInit(Step):
         """
         account = self.config_dialog.account
         logging.debug("Account : {0}".format(account))
-        self.config_dialog.community = Community.create(self.config_dialog.app.network_manager, self.node)
+        self.config_dialog.community = Community.create(self.node)
 
     def display_page(self):
         self.config_dialog.button_next.hide()
@@ -237,7 +237,7 @@ class ProcessConfigureCommunity(QDialog, Ui_CommunityConfigurationDialog):
         port = self.spinbox_add_port.value()
 
         try:
-            node = yield from Node.from_address(self.app.network_manager, self.community.currency, server, port)
+            node = yield from Node.from_address(self.community.currency, server, port)
             self.community.add_node(node)
         except Exception as e:
             QMessageBox.critical(self, self.tr("Error"),
diff --git a/src/cutecoin/tests/core/txhistory/test_txhistory_loading.py b/src/cutecoin/tests/core/txhistory/test_txhistory_loading.py
index 94145436a5fb13094a6658cbfbf0493b95ec6b88..bd120dbdd1a5c1ba823f011502d2185f1c1be85a 100644
--- a/src/cutecoin/tests/core/txhistory/test_txhistory_loading.py
+++ b/src/cutecoin/tests/core/txhistory/test_txhistory_loading.py
@@ -21,21 +21,20 @@ from ucoinpy.documents.peer import BMAEndpoint
 class TestTxHistory(unittest.TestCase):
     def setUp(self):
         self.qapplication = get_application()
-        self.network_manager = MockNetworkAccessManager()
         QLocale.setDefault(QLocale("en_GB"))
         self.lp = quamash.QEventLoop(self.qapplication)
         asyncio.set_event_loop(self.lp)
         self.identities_registry = IdentitiesRegistry({})
 
-        self.application = Application(self.qapplication, self.lp, self.network_manager, self.identities_registry)
+        self.application = Application(self.qapplication, self.lp, self.identities_registry)
         self.application.preferences['notifications'] = False
 
         self.endpoint = BMAEndpoint(PyBMAEndpoint("", "127.0.0.1", "", 50000))
-        self.node = Node(self.network_manager, "test_currency", [self.endpoint],
+        self.node = Node("test_currency", [self.endpoint],
                          "", "HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk",
                          nice_blockchain.bma_blockchain_current, Node.ONLINE,
                          time.time(), {}, "ucoin", "0.14.0", 0)
-        self.network = Network.create(self.network_manager, self.node)
+        self.network = Network.create(self.node)
         self.bma_access = BmaAccess.create(self.network)
         self.community = Community("test_currency", self.network, self.bma_access)
 
@@ -59,7 +58,7 @@ class TestTxHistory(unittest.TestCase):
         mock = nice_blockchain.get_mock()
         time.sleep(2)
         logging.debug(mock.pretend_url)
-        self.network_manager.set_mock_path(mock.pretend_url)
+
         received_list = []
         self.lp.run_until_complete(self.wallet.caches[self.community.currency].
                                    refresh(self.community, received_list))
diff --git a/src/cutecoin/tests/gui/certification/test_certification.py b/src/cutecoin/tests/gui/certification/test_certification.py
index b16e784b05bb46700958922e7b2099b2b277d0b0..2c75ddb7f9aa7aa7a80e4ace4cf128a80698cb88 100644
--- a/src/cutecoin/tests/gui/certification/test_certification.py
+++ b/src/cutecoin/tests/gui/certification/test_certification.py
@@ -26,21 +26,20 @@ from ucoinpy.api import bma
 class TestCertificationDialog(unittest.TestCase):
     def setUp(self):
         self.qapplication = get_application()
-        self.network_manager = MockNetworkAccessManager()
         QLocale.setDefault(QLocale("en_GB"))
         self.lp = quamash.QEventLoop(self.qapplication)
         asyncio.set_event_loop(self.lp)
         self.identities_registry = IdentitiesRegistry({})
 
-        self.application = Application(self.qapplication, self.lp, self.network_manager, self.identities_registry)
+        self.application = Application(self.qapplication, self.lp, self.identities_registry)
         self.application.preferences['notifications'] = False
 
         self.endpoint = BMAEndpoint("", "127.0.0.1", "", 50000)
-        self.node = Node(self.network_manager, "test_currency", [self.endpoint],
+        self.node = Node("test_currency", [self.endpoint],
                          "", "HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk",
                          None, Node.ONLINE,
                          time.time(), {}, "ucoin", "0.14.0", 0)
-        self.network = Network.create(self.network_manager, self.node)
+        self.network = Network.create(self.node)
         self.bma_access = BmaAccess.create(self.network)
         self.community = Community("test_currency", self.network, self.bma_access)
 
@@ -66,7 +65,6 @@ class TestCertificationDialog(unittest.TestCase):
         mock = init_new_community.get_mock()
         time.sleep(2)
         logging.debug(mock.pretend_url)
-        self.network_manager.set_mock_path(mock.pretend_url)
         API.reverse_url = pretender_reversed(mock.pretend_url)
         certification_dialog = CertificationDialog(self.application,
                                                    self.account,
diff --git a/src/cutecoin/tests/gui/identities_tab/test_identities_table.py b/src/cutecoin/tests/gui/identities_tab/test_identities_table.py
index 7e9ae2ab117ded171db241ee77b487696c9f1522..b5e8c936906b98afc860eedf28861f688fa6cb53 100644
--- a/src/cutecoin/tests/gui/identities_tab/test_identities_table.py
+++ b/src/cutecoin/tests/gui/identities_tab/test_identities_table.py
@@ -27,21 +27,20 @@ from cutecoin.tests import get_application
 class TestIdentitiesTable(unittest.TestCase):
     def setUp(self):
         self.qapplication = get_application()
-        self.network_manager = MockNetworkAccessManager()
         QLocale.setDefault(QLocale("en_GB"))
         self.lp = quamash.QEventLoop(self.qapplication)
         asyncio.set_event_loop(self.lp)
         self.identities_registry = IdentitiesRegistry()
 
-        self.application = Application(self.qapplication, self.lp, self.network_manager, self.identities_registry)
+        self.application = Application(self.qapplication, self.lp, self.identities_registry)
         self.application.preferences['notifications'] = False
 
         self.endpoint = BMAEndpoint("", "127.0.0.1", "", 50000)
-        self.node = Node(self.network_manager, "test_currency", [self.endpoint],
+        self.node = Node("test_currency", [self.endpoint],
                          "", "HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk",
                          None, Node.ONLINE,
                          time.time(), {}, "ucoin", "0.14.0", 0)
-        self.network = Network.create(self.network_manager, self.node)
+        self.network = Network.create(self.node)
         self.bma_access = BmaAccess.create(self.network)
         self.community = Community("test_currency", self.network, self.bma_access)
 
@@ -67,7 +66,6 @@ class TestIdentitiesTable(unittest.TestCase):
         mock = nice_blockchain.get_mock()
         time.sleep(2)
         logging.debug(mock.pretend_url)
-        self.network_manager.set_mock_path(mock.pretend_url)
         API.reverse_url = pretender_reversed(mock.pretend_url)
         identities_tab = IdentitiesTabWidget(self.application)
         identities_tab.change_account(self.account, self.password_asker)
diff --git a/src/cutecoin/tests/gui/main_window/test_main_window_dialogs.py b/src/cutecoin/tests/gui/main_window/test_main_window_dialogs.py
index db842cfde92a8afcb3b19602468524c0842a73af..29051bf66c720677fe840c8abcf03f7ceb621ea9 100644
--- a/src/cutecoin/tests/gui/main_window/test_main_window_dialogs.py
+++ b/src/cutecoin/tests/gui/main_window/test_main_window_dialogs.py
@@ -19,9 +19,8 @@ class MainWindowDialogsTest(unittest.TestCase):
         self.qapplication = get_application()
         self.lp = quamash.QEventLoop(self.qapplication)
         asyncio.set_event_loop(self.lp)
-        network_manager = QNetworkAccessManager()
 
-        self.application = Application(self.qapplication, self.lp, network_manager, IdentitiesRegistry())
+        self.application = Application(self.qapplication, self.lp, IdentitiesRegistry())
         self.main_window = MainWindow(self.application)
 
     def tearDown(self):
diff --git a/src/cutecoin/tests/gui/main_window/test_main_window_menus.py b/src/cutecoin/tests/gui/main_window/test_main_window_menus.py
index 95c3e6e12607d05d2523681b8970342baaca1de9..6fe831e8dfd3d3b0bc8b94e1b79b08b9e104ac2e 100644
--- a/src/cutecoin/tests/gui/main_window/test_main_window_menus.py
+++ b/src/cutecoin/tests/gui/main_window/test_main_window_menus.py
@@ -16,7 +16,7 @@ class MainWindowMenusTest(unittest.TestCase):
         self.lp = quamash.QEventLoop(self.qapplication)
         asyncio.set_event_loop(self.lp)
 
-        self.application = Application(self.qapplication, self.lp, None, None)
+        self.application = Application(self.qapplication, self.lp, None)
         self.main_window = MainWindow(self.application)
 
     def tearDown(self):
diff --git a/src/cutecoin/tests/gui/process_cfg_account/test_add_account.py b/src/cutecoin/tests/gui/process_cfg_account/test_add_account.py
index cd6808c164b50e1668a6b507bc436946e1199220..887ff99166ac1ddc1aef23fdf62bf3fbe13639ce 100644
--- a/src/cutecoin/tests/gui/process_cfg_account/test_add_account.py
+++ b/src/cutecoin/tests/gui/process_cfg_account/test_add_account.py
@@ -19,13 +19,12 @@ from cutecoin.tests import get_application
 class ProcessAddCommunity(unittest.TestCase):
     def setUp(self):
         self.qapplication = get_application()
-        self.network_manager = MockNetworkAccessManager()
         QLocale.setDefault(QLocale("en_GB"))
         self.lp = quamash.QEventLoop(self.qapplication)
         asyncio.set_event_loop(self.lp)
         self.identities_registry = IdentitiesRegistry({})
 
-        self.application = Application(self.qapplication, self.lp, self.network_manager, self.identities_registry)
+        self.application = Application(self.qapplication, self.lp, self.identities_registry)
         self.application.preferences['notifications'] = False
         # Salt/password : "testcutecoin/testcutecoin"
         # Pubkey : 7Aqw6Efa9EzE7gtsc8SveLLrM7gm6NEGoywSv4FJx6pZ
diff --git a/src/cutecoin/tests/gui/process_cfg_community/test_add_community.py b/src/cutecoin/tests/gui/process_cfg_community/test_add_community.py
index 9cacc9e260448fa53da3f70d6b275dcc3349044a..c7d112e5f20c4e274e501dbaf9b2dee31585e664 100644
--- a/src/cutecoin/tests/gui/process_cfg_community/test_add_community.py
+++ b/src/cutecoin/tests/gui/process_cfg_community/test_add_community.py
@@ -22,13 +22,12 @@ from cutecoin.tests import get_application
 class ProcessAddCommunity(unittest.TestCase):
     def setUp(self):
         self.qapplication = get_application()
-        self.network_manager = MockNetworkAccessManager()
         QLocale.setDefault(QLocale("en_GB"))
         self.lp = quamash.QEventLoop(self.qapplication)
         asyncio.set_event_loop(self.lp)
         self.identities_registry = IdentitiesRegistry({})
 
-        self.application = Application(self.qapplication, self.lp, self.network_manager, self.identities_registry)
+        self.application = Application(self.qapplication, self.lp, self.identities_registry)
         self.application.preferences['notifications'] = False
         # Salt/password : "testcutecoin/testcutecoin"
         # Pubkey : 7Aqw6Efa9EzE7gtsc8SveLLrM7gm6NEGoywSv4FJx6pZ
@@ -48,7 +47,6 @@ class ProcessAddCommunity(unittest.TestCase):
         mock = new_blockchain.get_mock()
         time.sleep(2)
         logging.debug(mock.pretend_url)
-        self.network_manager.set_mock_path(mock.pretend_url)
         API.reverse_url = pretender_reversed(mock.pretend_url)
         process_community = ProcessConfigureCommunity(self.application,
                                                     self.account,
@@ -107,7 +105,6 @@ class ProcessAddCommunity(unittest.TestCase):
         mock = new_blockchain.get_mock()
         time.sleep(2)
         logging.debug(mock.pretend_url)
-        self.network_manager.set_mock_path(mock.pretend_url)
         API.reverse_url = pretender_reversed(mock.pretend_url)
         process_community = ProcessConfigureCommunity(self.application,
                                                     self.account,
@@ -160,7 +157,6 @@ class ProcessAddCommunity(unittest.TestCase):
         mock = nice_blockchain.get_mock()
         time.sleep(2)
         logging.debug(mock.pretend_url)
-        self.network_manager.set_mock_path(mock.pretend_url)
         API.reverse_url = pretender_reversed(mock.pretend_url)
         process_community = ProcessConfigureCommunity(self.application,
                                                     self.account,
diff --git a/src/cutecoin/tests/gui/transfer/test_transfer.py b/src/cutecoin/tests/gui/transfer/test_transfer.py
index f3c35f4ff061d4ff80e3af865e1ff3e5a7264bf0..e97c8790f247769799e3f34f0c432660880b3a82 100644
--- a/src/cutecoin/tests/gui/transfer/test_transfer.py
+++ b/src/cutecoin/tests/gui/transfer/test_transfer.py
@@ -27,21 +27,20 @@ from ucoinpy.api import bma
 class TestTransferDialog(unittest.TestCase):
     def setUp(self):
         self.qapplication = get_application()
-        self.network_manager = MockNetworkAccessManager()
         QLocale.setDefault(QLocale("en_GB"))
         self.lp = quamash.QEventLoop(self.qapplication)
         asyncio.set_event_loop(self.lp)
         self.identities_registry = IdentitiesRegistry({})
 
-        self.application = Application(self.qapplication, self.lp, self.network_manager, self.identities_registry)
+        self.application = Application(self.qapplication, self.lp, self.identities_registry)
         self.application.preferences['notifications'] = False
 
         self.endpoint = BMAEndpoint("", "127.0.0.1", "", 50000)
-        self.node = Node(self.network_manager, "test_currency", [self.endpoint],
+        self.node = Node("test_currency", [self.endpoint],
                          "", "HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk",
                          None, Node.ONLINE,
                          time.time(), {}, "ucoin", "0.14.0", 0)
-        self.network = Network.create(self.network_manager, self.node)
+        self.network = Network.create(self.node)
         self.bma_access = BmaAccess.create(self.network)
         self.community = Community("test_currency", self.network, self.bma_access)
 
@@ -67,7 +66,6 @@ class TestTransferDialog(unittest.TestCase):
         mock = nice_blockchain.get_mock()
         time.sleep(2)
         logging.debug(mock.pretend_url)
-        self.network_manager.set_mock_path(mock.pretend_url)
         API.reverse_url = pretender_reversed(mock.pretend_url)
         transfer_dialog = TransferMoneyDialog(self.application,
                                                    self.account,
diff --git a/src/cutecoin/tests/gui/wot_tab/test_wot_tab.py b/src/cutecoin/tests/gui/wot_tab/test_wot_tab.py
index 8b6240faa0fa50e3c273eea2f75fd63de13b44b4..72e1fc8a2d52e054d5d0ad416d3bd068826211cc 100644
--- a/src/cutecoin/tests/gui/wot_tab/test_wot_tab.py
+++ b/src/cutecoin/tests/gui/wot_tab/test_wot_tab.py
@@ -26,21 +26,20 @@ from cutecoin.tests import get_application
 class TestIdentitiesTable(unittest.TestCase):
     def setUp(self):
         self.qapplication = get_application()
-        self.network_manager = MockNetworkAccessManager()
         QLocale.setDefault(QLocale("en_GB"))
         self.lp = quamash.QEventLoop(self.qapplication)
         asyncio.set_event_loop(self.lp)
         self.identities_registry = IdentitiesRegistry()
 
-        self.application = Application(self.qapplication, self.lp, self.network_manager, self.identities_registry)
+        self.application = Application(self.qapplication, self.lp, self.identities_registry)
         self.application.preferences['notifications'] = False
 
         self.endpoint = BMAEndpoint("", "127.0.0.1", "", 50000)
-        self.node = Node(self.network_manager, "test_currency", [self.endpoint],
+        self.node = Node("test_currency", [self.endpoint],
                          "", "HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk",
                          None, Node.ONLINE,
                          time.time(), {}, "ucoin", "0.14.0", 0)
-        self.network = Network.create(self.network_manager, self.node)
+        self.network = Network.create(self.node)
         self.bma_access = BmaAccess.create(self.network)
         self.community = Community("test_currency", self.network, self.bma_access)
 
@@ -66,7 +65,6 @@ class TestIdentitiesTable(unittest.TestCase):
         mock = nice_blockchain.get_mock()
         time.sleep(2)
         logging.debug(mock.pretend_url)
-        self.network_manager.set_mock_path(mock.pretend_url)
         API.reverse_url = pretender_reversed(mock.pretend_url)
         wot_tab = WotTabWidget(self.application)
         future = asyncio.Future()
diff --git a/src/cutecoin/tests/mocks/bma/nice_blockchain.py b/src/cutecoin/tests/mocks/bma/nice_blockchain.py
index c11b82d5c470ff9a44cebc22055fad870c1a28de..606fc66066635f13c9cad16d2ec5c22c47688e7d 100644
--- a/src/cutecoin/tests/mocks/bma/nice_blockchain.py
+++ b/src/cutecoin/tests/mocks/bma/nice_blockchain.py
@@ -273,7 +273,7 @@ def get_mock():
                 times=FOREVER,
                 headers={'Content-Type': 'application/json'})
 
-    mock.when('GET /blockchain/with/UD')\
+    mock.when('GET /blockchain/with/[UD|ud]')\
             .reply(body=bytes(json.dumps(bma_with_ud), "utf-8"),
                 status=200,
                 times=FOREVER,
diff --git a/src/cutecoin/tests/stubs/core/net/network.py b/src/cutecoin/tests/stubs/core/net/network.py
index 3d2de537d84529bd64056c7d2b25094d8c08be87..d37d8adf2faadc326bd319108644beb880efa4af 100644
--- a/src/cutecoin/tests/stubs/core/net/network.py
+++ b/src/cutecoin/tests/stubs/core/net/network.py
@@ -16,7 +16,7 @@ class Network(QObject):
     nodes_changed = pyqtSignal()
     new_block_mined = pyqtSignal(int)
 
-    def __init__(self, network_manager, currency, nodes):
+    def __init__(self, currency, nodes):
         """
         Constructor of a network
 
@@ -25,21 +25,20 @@ class Network(QObject):
         """
         super().__init__()
         self.currency = currency
-        self.network_manager = network_manager
 
     @classmethod
-    def create(cls, network_manager, node):
+    def create(cls, node):
         nodes = [node]
-        network = cls(network_manager, node.currency, nodes)
+        network = cls(node.currency, nodes)
         return network
 
     def merge_with_json(self, json_data):
         pass
 
     @classmethod
-    def from_json(cls, network_manager, currency, json_data):
+    def from_json(cls, currency, json_data):
         nodes = []
-        network = cls(network_manager, currency, nodes)
+        network = cls(currency, nodes)
         return network
 
     def jsonify(self):