diff --git a/README.md b/README.md
index 4f56cc375..abbba65f2 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,8 @@
     <a id="user-content-opendht-" class="anchor" href="/savoirfairelinux/opendht/blob/master/README.md#opendht-" aria-hidden="true"></a>OpenDHT
 </h1>
 
+![PyPI - Version](https://img.shields.io/pypi/v/opendht?style=flat)
+
 A lightweight C++17 Distributed Hash Table implementation.
 
 OpenDHT provides an easy to use distributed in-memory data store.
diff --git a/src/securedht.cpp b/src/securedht.cpp
index 796b2457b..f73954720 100644
--- a/src/securedht.cpp
+++ b/src/securedht.cpp
@@ -53,25 +53,30 @@ SecureDht::SecureDht(std::unique_ptr<DhtInterface> dht, SecureDht::Config conf,
         auto certLongId = certificate_->getLongId();
         if (key_ and (certId != key_->getPublicKey().getId() or certLongId != key_->getPublicKey().getLongId()))
             throw DhtException("SecureDht: provided certificate doesn't match private key.");
-        dht_->addOnConnectedCallback([this, certId, certLongId, cb=std::move(iacb)]{
+
+        auto cb = iacb ? [
+            this,
+            completedState = std::make_shared<std::pair<unsigned,bool>>(2, true),
+            iacb = std::move(iacb)
+        ](bool ok) {
+            if (logger_)
+                logger_->d("SecureDht: certificate announcement %s", ok ? "succeeded" : "failed");
+            completedState->second = completedState->second and ok;
+            if (--completedState->first == 0)
+                iacb(completedState->second);
+        } : iacb;
+
+        dht_->addOnConnectedCallback([this, certId, certLongId, cb=std::move(cb)]{
             dht_->put(certId, Value {
                 CERTIFICATE_TYPE,
                 *certificate_,
                 1
-            }, [this, certId, cb=std::move(cb)](bool ok) {
-                if (cb) cb(ok);
-                if (logger_)
-                    logger_->d(certId, "SecureDht: certificate announcement %s", ok ? "succeeded" : "failed");
-            }, {}, true);
+            }, cb, {}, true);
             dht_->put(InfoHash::get(certLongId), Value {
                 CERTIFICATE_TYPE,
                 *certificate_,
                 1
-            }, [this, cb=std::move(cb)](bool ok) {
-                if (cb) cb(ok);
-                if (logger_)
-                    logger_->debug("SecureDht: certificate announcement {}", ok ? "succeeded" : "failed");
-            }, {}, true);
+            }, cb, {}, true);
         });
     }
 }
diff --git a/tests/dhtrunnertester.cpp b/tests/dhtrunnertester.cpp
index 923938e48..ad5460431 100644
--- a/tests/dhtrunnertester.cpp
+++ b/tests/dhtrunnertester.cpp
@@ -52,13 +52,13 @@ DhtRunnerTester::tearDown() {
     std::condition_variable cv;
     std::mutex cv_m;
     auto shutdown = [&]{
-        std::lock_guard<std::mutex> lk(cv_m);
+        std::lock_guard lk(cv_m);
         done++;
         cv.notify_all();
     };
     node1.shutdown(shutdown);
     node2.shutdown(shutdown);
-    std::unique_lock<std::mutex> lk(cv_m);
+    std::unique_lock lk(cv_m);
     CPPUNIT_ASSERT(cv.wait_for(lk, 30s, [&]{ return done == 2u; }));
     node1.join();
     node2.join();
@@ -207,13 +207,13 @@ DhtRunnerTester::testListen() {
 
     for (unsigned i=0; i<N; i++) {
         node2.put(a, dht::Value("v1"), [&](bool ok) {
-            std::lock_guard<std::mutex> lock(mutex);
+            std::lock_guard lock(mutex);
             putCount++;
             if (ok) putOkCount1++;
             cv.notify_all();
         });
         node2.put(b, dht::Value("v2"), [&](bool ok) {
-            std::lock_guard<std::mutex> lock(mutex);
+            std::lock_guard lock(mutex);
             putCount++;
             if (ok) putOkCount2++;
             cv.notify_all();
@@ -221,7 +221,7 @@ DhtRunnerTester::testListen() {
         auto bigVal = std::make_shared<dht::Value>();
         bigVal->data = mtu;
         node2.put(c, std::move(bigVal), [&](bool ok) {
-            std::lock_guard<std::mutex> lock(mutex);
+            std::lock_guard lock(mutex);
             putCount++;
             if (ok) putOkCount3++;
             cv.notify_all();
@@ -229,7 +229,7 @@ DhtRunnerTester::testListen() {
     }
 
     {
-        std::unique_lock<std::mutex> lk(mutex);
+        std::unique_lock lk(mutex);
         CPPUNIT_ASSERT(cv.wait_for(lk, 30s, [&]{ return putCount == N * 3u; }));
         CPPUNIT_ASSERT_EQUAL(N, putOkCount1);
         CPPUNIT_ASSERT_EQUAL(N, putOkCount2);
@@ -264,6 +264,7 @@ void
 DhtRunnerTester::testIdOps() {
     std::mutex mutex;
     std::condition_variable cv;
+    unsigned identityCount(0);
     unsigned valueCount(0);
     unsigned valueCountEdit(0);
 
@@ -275,8 +276,8 @@ DhtRunnerTester::testIdOps() {
     dht::DhtRunner::Context context2;
     context2.identityAnnouncedCb = [&](bool ok) {
         CPPUNIT_ASSERT(ok);
-        std::lock_guard<std::mutex> lk(mutex);
-        valueCount++;
+        std::lock_guard lk(mutex);
+        identityCount++;
         cv.notify_all();
     };
 
@@ -288,27 +289,28 @@ DhtRunnerTester::testIdOps() {
     node2.bootstrap(bound);
 
     {
-        std::unique_lock<std::mutex> lk(mutex);
-        CPPUNIT_ASSERT(cv.wait_for(lk, 20s, [&]{ return valueCount == 1; }));
+        std::unique_lock lk(mutex);
+        CPPUNIT_ASSERT(cv.wait_for(lk, 20s, [&]{ return identityCount == 1; }));
     }
 
     node1.findCertificate(node2.getId(), [&](const std::shared_ptr<dht::crypto::Certificate>& crt){
         CPPUNIT_ASSERT(crt);
-        std::lock_guard<std::mutex> lk(mutex);
+        std::lock_guard lk(mutex);
         valueCount++;
         cv.notify_all();
     });
 
     {
-        std::unique_lock<std::mutex> lk(mutex);
-        CPPUNIT_ASSERT(cv.wait_for(lk, 20s, [&]{ return valueCount == 2; }));
+        std::unique_lock lk(mutex);
+        CPPUNIT_ASSERT(cv.wait_for(lk, 20s, [&]{ return valueCount == 1u; }));
+        CPPUNIT_ASSERT_EQUAL(1u, identityCount);
     }
 
     dht::DhtRunner::Context context1;
     context1.identityAnnouncedCb = [&](bool ok) {
         CPPUNIT_ASSERT(ok);
-        std::lock_guard<std::mutex> lk(mutex);
-        valueCount++;
+        std::lock_guard lk(mutex);
+        identityCount++;
         cv.notify_all();
     };
 
@@ -323,21 +325,21 @@ DhtRunnerTester::testIdOps() {
     auto key = dht::InfoHash::get("key");
     node1.putEncrypted(key, node2.getId(), dht::Value("yo"), [&](bool ok){
         CPPUNIT_ASSERT(ok);
-        std::lock_guard<std::mutex> lk(mutex);
+        std::lock_guard lk(mutex);
         valueCount++;
         cv.notify_all();
     });
 
     node1.putEncrypted(key, node2.getPublicKey(), std::make_shared<dht::Value>("yo"), [&](bool ok){
         CPPUNIT_ASSERT(ok);
-        std::lock_guard<std::mutex> lk(mutex);
+        std::lock_guard lk(mutex);
         valueCount++;
         cv.notify_all();
     });
 
     node2.listen<std::string>(key, [&](std::string&& value){
         CPPUNIT_ASSERT_EQUAL("yo"s, value);
-        std::lock_guard<std::mutex> lk(mutex);
+        std::lock_guard lk(mutex);
         valueCount++;
         cv.notify_all();
         return true;
@@ -347,7 +349,7 @@ DhtRunnerTester::testIdOps() {
     auto editValue = std::make_shared<dht::Value>("v1");
     node1.putSigned(key2, editValue, [&](bool ok){
         CPPUNIT_ASSERT(ok);
-        std::lock_guard<std::mutex> lk(mutex);
+        std::lock_guard lk(mutex);
         valueCountEdit++;
         cv.notify_all();
     });
@@ -359,16 +361,29 @@ DhtRunnerTester::testIdOps() {
                 CPPUNIT_ASSERT_EQUAL("v2"s, dht::unpackMsg<std::string>(v->data));
             CPPUNIT_ASSERT_EQUAL(v->owner->getLongId(), node1.getPublicKey()->getLongId());
         }
-        std::lock_guard<std::mutex> lk(mutex);
+        std::lock_guard lk(mutex);
         valueCountEdit += values.size();
         cv.notify_all();
         return true;
     });
 
     {
-        std::unique_lock<std::mutex> lk(mutex);
-        CPPUNIT_ASSERT(cv.wait_for(lk, 20s, [&]{ return valueCount == 7; }));
-        CPPUNIT_ASSERT(cv.wait_for(lk, 20s, [&]{ return valueCountEdit == 2; }));
+        std::unique_lock lk(mutex);
+        CPPUNIT_ASSERT(cv.wait_for(lk, 20s, [&]{ return identityCount == 2u; }));
+        CPPUNIT_ASSERT(cv.wait_for(lk, 20s, [&]{ return valueCount == 5u; }));
+        CPPUNIT_ASSERT(cv.wait_for(lk, 20s, [&]{ return valueCountEdit == 2u; }));
+    }
+
+    node2.findCertificate(node1.getPublicKey()->getLongId(), [&](const std::shared_ptr<dht::crypto::Certificate>& crt){
+        CPPUNIT_ASSERT(crt);
+        std::lock_guard lk(mutex);
+        valueCount++;
+        cv.notify_all();
+    });
+
+    {
+        std::unique_lock lk(mutex);
+        CPPUNIT_ASSERT(cv.wait_for(lk, 20s, [&]{ return valueCount == 6u; }));
     }
 
     // editValue->data = dht::packMsg("v2");
@@ -376,12 +391,12 @@ DhtRunnerTester::testIdOps() {
     editValue->data = dht::packMsg("v2");
     node1.putSigned(key2, editValue, [&](bool ok){
         CPPUNIT_ASSERT(ok);
-        std::lock_guard<std::mutex> lk(mutex);
+        std::lock_guard lk(mutex);
         valueCountEdit++;
         cv.notify_all();
     });
-    std::unique_lock<std::mutex> lk(mutex);
-    CPPUNIT_ASSERT(cv.wait_for(lk, 20s, [&]{ return valueCountEdit == 4; }));
+    std::unique_lock lk(mutex);
+    CPPUNIT_ASSERT(cv.wait_for(lk, 20s, [&]{ return valueCountEdit == 4u; }));
 }
 
 void
@@ -399,14 +414,14 @@ DhtRunnerTester::testListenLotOfBytes() {
 
     for (unsigned i=0; i<N; i++) {
         node2.put(foo, data, [&](bool ok) {
-            std::lock_guard<std::mutex> lock(mutex);
+            std::lock_guard lock(mutex);
             putCount++;
             if (ok) putOkCount++;
             cv.notify_all();
         });
     }
     {
-        std::unique_lock<std::mutex> lk(mutex);
+        std::unique_lock lk(mutex);
         CPPUNIT_ASSERT(cv.wait_for(lk, 30s, [&]{ return putCount == N; }));
     }
 
@@ -427,7 +442,7 @@ DhtRunnerTester::testListenLotOfBytes() {
     });
 
     {
-        std::unique_lock<std::mutex> lk(mutex);
+        std::unique_lock lk(mutex);
         CPPUNIT_ASSERT(cv.wait_for(lk, 30s, [&]{ return valueCount == N; }));
     }
 
@@ -447,7 +462,7 @@ DhtRunnerTester::testMultithread() {
     for (unsigned i=0; i<N; i++) {
         dht::ThreadPool::computation().run([&]{
             node2.put(dht::InfoHash::get("123" + std::to_string(i)), "hehe", [&](bool ok) {
-                std::lock_guard<std::mutex> lock(mutex);
+                std::lock_guard lock(mutex);
                 putCount++;
                 if (ok) putOkCount++;
                 cv.notify_all();
@@ -455,14 +470,14 @@ DhtRunnerTester::testMultithread() {
             node2.get(dht::InfoHash::get("123" + std::to_string(N-i-1)), [](const std::shared_ptr<dht::Value>&){
                 return true;
             }, [&](bool ok) {
-                std::lock_guard<std::mutex> lock(mutex);
+                std::lock_guard lock(mutex);
                 putCount++;
                 if (ok) putOkCount++;
                 cv.notify_all();
             });
         });
     }
-    std::unique_lock<std::mutex> lk(mutex);
+    std::unique_lock lk(mutex);
     CPPUNIT_ASSERT(cv.wait_for(lk, 30s, [&]{ return putCount == 2*N; }));
     CPPUNIT_ASSERT_EQUAL(2*N, putOkCount);