diff --git a/BUILD.gn b/BUILD.gn
index 94fad4e..81cb495 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -78,6 +78,8 @@ source_set("ads") {
     "src/json_helper.cc",
     "src/uri_helper.cc",
     "src/bat/ads/ad_info.cc",
+    "src/bat/ads/issuer_info.cc",
+    "src/bat/ads/issuers_info.cc",
     "src/bat/ads/notification_info.cc",
     "src/bat/ads/client_info.cc",
     "src/bat/ads/url_components.cc",
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6c9343e..6420682 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -92,6 +92,8 @@ message(STATUS "BAT Native Ads")
 set(SOURCES
   "${PROJECT_SOURCE_DIR}/src/bat/ads/ad_info.cc"
   "${PROJECT_SOURCE_DIR}/src/bat/ads/client_info.cc"
+  "${PROJECT_SOURCE_DIR}/src/bat/ads/issuer_info.cc"
+  "${PROJECT_SOURCE_DIR}/src/bat/ads/issuers_info.cc"
   "${PROJECT_SOURCE_DIR}/src/bat/ads/notification_info.cc"
   "${PROJECT_SOURCE_DIR}/src/bat/ads/url_components.cc"
   "${PROJECT_SOURCE_DIR}/src/ads.cc"
diff --git a/README.md b/README.md
index 06f8d15..4afa107 100644
--- a/README.md
+++ b/README.md
@@ -175,11 +175,6 @@ void LoadUserModelForLocale(
 const std::string GenerateUUID() const
 ```
 
-`GetSSID` should return the network SSID or an empty string if not available
-```
-const std::string GetSSID() const
-```
-
 `IsForeground` should return `true` if the browser is in the foreground otherwise returns `false`
 ```
 bool IsForeground() const
@@ -195,14 +190,19 @@ bool IsNotificationsAvailable() const
 void ShowNotification(std::unique_ptr<NotificationInfo> info)
 ```
 
-`CanShowAd` should return `true` if Confirmations is ready to show the ad otherwise returns `false`
+`SetCatalogIssuers` should notify that the catalog issuers have changed
 ```
-bool CanShowAd(const AdInfo& ad_info)
+  void SetCatalogIssuers(std::unique_ptr<IssuersInfo> info);
+```
+
+`IsConfirmationsReadyToShowAds` should return `true` if Confirmations is ready to show ads otherwise returns `false`
+```
+bool IsConfirmationsReadyToShowAds()
 ```
 
 `AdSustained` should be called to inform Confirmations that an ad was sustained
 ```
-void AdSustained(const AdInfo& ad_info)
+void AdSustained(std::unique_ptr<NotificationInfo> info)
 ```
 
 `SetTimer` should create a timer to trigger after the time offset specified in seconds. If the timer was created successfully a unique identifier should be returned, otherwise returns `0`
@@ -215,12 +215,6 @@ uint32_t SetTimer(const uint64_t time_offset)
 void KillTimer(uint32_t timer_id)
 ```
 
-`OnCatalogIssuersChanged` should notify that the catalog issuers have changed
-```
-  void OnCatalogIssuersChanged(
-      const std::vector<IssuerInfo>& issuers);
-```
-
 `URLRequest` should start a URL request
 ```
 void URLRequest(
diff --git a/include/bat/ads/ads_client.h b/include/bat/ads/ads_client.h
index a57c0bd..4463303 100644
--- a/include/bat/ads/ads_client.h
+++ b/include/bat/ads/ads_client.h
@@ -14,7 +14,7 @@
 #include <functional>
 
 #include "bat/ads/ad_info.h"
-#include "bat/ads/issuer_info.h"
+#include "bat/ads/issuers_info.h"
 #include "bat/ads/bundle_state.h"
 #include "bat/ads/client_info.h"
 #include "bat/ads/export.h"
@@ -110,12 +110,15 @@ class ADS_EXPORT AdsClient {
   // Should show a notification
   virtual void ShowNotification(std::unique_ptr<NotificationInfo> info) = 0;
 
+  // Should notify that the catalog issuers have changed
+  virtual void SetCatalogIssuers(std::unique_ptr<IssuersInfo> info) = 0;
+
   // Should return true if Confirmations is ready to show ad otherwise returns
   // false
-  virtual bool CanShowAd(const AdInfo& ad_info) = 0;
+  virtual bool IsConfirmationsReadyToShowAds() = 0;
 
   // Should be called to inform Confirmations that an ad was sustained
-  virtual void AdSustained(const NotificationInfo& info) = 0;
+  virtual void AdSustained(std::unique_ptr<NotificationInfo> info) = 0;
 
   // Should create a timer to trigger after the time offset specified in
   // seconds. If the timer was created successfully a unique identifier should
@@ -125,10 +128,6 @@ class ADS_EXPORT AdsClient {
   // Should destroy the timer associated with the specified timer identifier
   virtual void KillTimer(uint32_t timer_id) = 0;
 
-  // Should notify that the catalog issuers have changed
-  virtual void OnCatalogIssuersChanged(
-      const std::vector<IssuerInfo>& issuers) = 0;
-
   // Should start a URL request
   virtual void URLRequest(
       const std::string& url,
diff --git a/include/bat/ads/issuer_info.h b/include/bat/ads/issuer_info.h
index 7b65fe7..89514c4 100644
--- a/include/bat/ads/issuer_info.h
+++ b/include/bat/ads/issuer_info.h
@@ -7,22 +7,14 @@
 
 #include <string>
 
-namespace ads {
-
-struct IssuerInfo {
-  IssuerInfo() :
-      name(""),
-      public_key("") {}
+#include "bat/ads/export.h"
 
-  explicit IssuerInfo(const std::string& public_key) :
-      name(""),
-      public_key(public_key) {}
-
-  IssuerInfo(const IssuerInfo& info) :
-      name(info.name),
-      public_key(info.public_key) {}
+namespace ads {
 
-  ~IssuerInfo() {}
+struct ADS_EXPORT IssuerInfo {
+  IssuerInfo();
+  IssuerInfo(const IssuerInfo& info);
+  ~IssuerInfo();
 
   std::string name;
   std::string public_key;
diff --git a/include/bat/ads/issuers_info.h b/include/bat/ads/issuers_info.h
new file mode 100644
index 0000000..edadaaf
--- /dev/null
+++ b/include/bat/ads/issuers_info.h
@@ -0,0 +1,29 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef BAT_ADS_ISSUERS_INFO_H_
+#define BAT_ADS_ISSUERS_INFO_H_
+
+#include <string>
+#include <vector>
+
+#include "bat/ads/export.h"
+#include "bat/ads/issuer_info.h"
+
+namespace ads {
+
+struct ADS_EXPORT IssuersInfo {
+  IssuersInfo();
+  IssuersInfo(const IssuersInfo& info);
+  ~IssuersInfo();
+
+  const std::string ToJson() const;
+  bool FromJson(const std::string& json);
+
+  std::vector<IssuerInfo> issuers;
+};
+
+}  // namespace ads
+
+#endif  // BAT_ADS_ISSUERS_INFO_H_
diff --git a/src/ads_impl.cc b/src/ads_impl.cc
index 334c05f..292d265 100644
--- a/src/ads_impl.cc
+++ b/src/ads_impl.cc
@@ -556,6 +556,12 @@ void AdsImpl::CheckReadyAdServe(const bool forced) {
   }
 
   if (!forced) {
+    if (!ads_client_->IsConfirmationsReadyToShowAds()) {
+      LOG(INFO) << "Notification not made: Confirmations not ready";
+
+      return;
+    }
+
     if (!IsMobile() && !IsForeground()) {
       // TODO(Terry Mancey): Implement Log (#44)
       // 'Notification not made', { reason: 'not in foreground' }
@@ -735,17 +741,6 @@ bool AdsImpl::ShowAd(
     return false;
   }
 
-  if (!ads_client_->CanShowAd(ad_info)) {
-    LOG(INFO) << "Notification not made: Confirmations not ready"
-        << std::endl << "  advertiser: " << ad_info.advertiser
-        << std::endl << "  notificationText: " << ad_info.notification_text
-        << std::endl << "  notificationUrl: " << ad_info.notification_url
-        << std::endl << "  creativeSetId: " << ad_info.notification_url
-        << std::endl << "  uuid: " << ad_info.notification_url;
-
-    return false;
-  }
-
   auto notification_info = std::make_unique<NotificationInfo>();
   notification_info->advertiser = ad_info.advertiser;
   notification_info->category = category;
@@ -992,6 +987,10 @@ void AdsImpl::SustainAdInteraction() {
   LOG(INFO) << "Sustained ad interaction";
 
   GenerateAdReportingSustainEvent(last_shown_notification_info_);
+
+  auto notification_info =
+      std::make_unique<NotificationInfo>(last_shown_notification_info_);
+  ads_client_->AdSustained(std::move(notification_info));
 }
 
 void AdsImpl::StopSustainingAdInteraction() {
@@ -1193,8 +1192,6 @@ void AdsImpl::GenerateAdReportingSustainEvent(
 
   auto json = buffer.GetString();
   ads_client_->EventLog(json);
-
-  ads_client_->AdSustained(info);
 }
 
 void AdsImpl::GenerateAdReportingLoadEvent(
diff --git a/src/ads_serve.cc b/src/ads_serve.cc
index 53eaca0..72f7faa 100644
--- a/src/ads_serve.cc
+++ b/src/ads_serve.cc
@@ -156,11 +156,12 @@ bool AdsServe::ProcessCatalog(const std::string& json) {
     return false;
   }
 
-  ads_client_->OnCatalogIssuersChanged(catalog.GetIssuers());
-
   auto callback = std::bind(&AdsServe::OnCatalogSaved, this, _1);
   catalog.Save(json, callback);
 
+  auto issuers_info = std::make_unique<IssuersInfo>(catalog.GetIssuers());
+  ads_client_->SetCatalogIssuers(std::move(issuers_info));
+
   return true;
 }
 
diff --git a/src/bat/ads/issuer_info.cc b/src/bat/ads/issuer_info.cc
new file mode 100644
index 0000000..367d873
--- /dev/null
+++ b/src/bat/ads/issuer_info.cc
@@ -0,0 +1,19 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "bat/ads/issuer_info.h"
+
+namespace ads {
+
+IssuerInfo::IssuerInfo() :
+    name(""),
+    public_key("") {}
+
+IssuerInfo::IssuerInfo(const IssuerInfo& info) :
+    name(info.name),
+    public_key(info.public_key) {}
+
+IssuerInfo::~IssuerInfo() = default;
+
+}  // namespace ads
diff --git a/src/bat/ads/issuers_info.cc b/src/bat/ads/issuers_info.cc
new file mode 100644
index 0000000..c1a1e39
--- /dev/null
+++ b/src/bat/ads/issuers_info.cc
@@ -0,0 +1,68 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "bat/ads/issuers_info.h"
+
+#include "json_helper.h"
+
+namespace ads {
+
+IssuersInfo::IssuersInfo() :
+    issuers({}) {}
+
+IssuersInfo::IssuersInfo(const IssuersInfo& info) :
+    issuers(info.issuers) {}
+
+IssuersInfo::~IssuersInfo() = default;
+
+const std::string IssuersInfo::ToJson() const {
+  std::string json;
+  SaveToJson(*this, &json);
+  return json;
+}
+
+bool IssuersInfo::FromJson(const std::string& json) {
+  rapidjson::Document document;
+  document.Parse(json.c_str());
+
+  if (document.HasParseError()) {
+    return false;
+  }
+
+  std::vector<IssuerInfo> issuers = {};
+  if (document.HasMember("issuers")) {
+    for (const auto& issuer : document["issuers"].GetArray()) {
+      IssuerInfo info;
+      info.name = issuer["name"].GetString();
+      info.public_key = issuer["public_key"].GetString();
+
+      issuers.push_back(info);
+    }
+  }
+
+  return true;
+}
+
+void SaveToJson(JsonWriter* writer, const IssuersInfo& info) {
+  writer->StartObject();
+
+  writer->String("issuers");
+  writer->StartArray();
+  for (const auto& issuer : info.issuers) {
+    writer->StartObject();
+
+    writer->String("name");
+    writer->String(issuer.name.c_str());
+
+    writer->String("public_key");
+    writer->String(issuer.public_key.c_str());
+
+    writer->EndObject();
+  }
+  writer->EndArray();
+
+  writer->EndObject();
+}
+
+}  // namespace ads
diff --git a/src/catalog.cc b/src/catalog.cc
index ca1aef5..cbad147 100755
--- a/src/catalog.cc
+++ b/src/catalog.cc
@@ -60,7 +60,7 @@ const std::vector<CampaignInfo>& Catalog::GetCampaigns() const {
   return catalog_state_->campaigns;
 }
 
-const std::vector<IssuerInfo>& Catalog::GetIssuers() const {
+const IssuersInfo& Catalog::GetIssuers() const {
   return catalog_state_->issuers;
 }
 
diff --git a/src/catalog.h b/src/catalog.h
index fa7374a..38999e5 100755
--- a/src/catalog.h
+++ b/src/catalog.h
@@ -30,7 +30,7 @@ class Catalog {
 
   const std::vector<CampaignInfo>& GetCampaigns() const;
 
-  const std::vector<IssuerInfo>& GetIssuers() const;
+  const IssuersInfo& GetIssuers() const;
 
   void Save(const std::string& json, OnSaveCallback callback);
   void Reset(OnSaveCallback callback);
diff --git a/src/catalog_state.cc b/src/catalog_state.cc
index 7444c45..dad488e 100644
--- a/src/catalog_state.cc
+++ b/src/catalog_state.cc
@@ -14,7 +14,7 @@ CatalogState::CatalogState() :
     version(0),
     ping(0),
     campaigns({}),
-    issuers({}) {}
+    issuers(IssuersInfo()) {}
 
 CatalogState::CatalogState(const CatalogState& state) :
     catalog_id(state.catalog_id),
@@ -39,7 +39,7 @@ bool CatalogState::FromJson(
   uint64_t new_version = 0;
   uint64_t new_ping = kDefaultCatalogPing * kMillisecondsInASecond;
   std::vector<CampaignInfo> new_campaigns = {};
-  std::vector<IssuerInfo> new_issuers = {};
+  IssuersInfo new_issuers = IssuersInfo();
 
   new_catalog_id = catalog["catalogId"].GetString();
 
@@ -159,7 +159,7 @@ bool CatalogState::FromJson(
     issuer_info.name = issuer["name"].GetString();
     issuer_info.public_key = issuer["publicKey"].GetString();
 
-    new_issuers.push_back(issuer_info);
+    new_issuers.issuers.push_back(issuer_info);
   }
 
   catalog_id = new_catalog_id;
diff --git a/src/catalog_state.h b/src/catalog_state.h
index cd74d75..f9f33f7 100644
--- a/src/catalog_state.h
+++ b/src/catalog_state.h
@@ -10,7 +10,7 @@
 #include <map>
 
 #include "campaign_info.h"
-#include "bat/ads/issuer_info.h"
+#include "bat/ads/issuers_info.h"
 #include "json_helper.h"
 
 namespace ads {
@@ -26,7 +26,7 @@ struct CatalogState {
   uint64_t version;
   uint64_t ping;
   std::vector<CampaignInfo> campaigns;
-  std::vector<IssuerInfo> issuers;
+  IssuersInfo issuers;
 };
 
 }  // namespace ads
diff --git a/src/json_helper.h b/src/json_helper.h
index 6343d6e..ada1a7a 100644
--- a/src/json_helper.h
+++ b/src/json_helper.h
@@ -13,8 +13,9 @@
 
 namespace ads {
 
-struct AdInfo;
 struct ClientInfo;
+struct IssuersInfo;
+struct AdInfo;
 struct NotificationInfo;
 struct UrlComponents;
 struct ClientState;
@@ -22,8 +23,9 @@ struct BundleState;
 
 using JsonWriter = rapidjson::Writer<rapidjson::StringBuffer>;
 
-void SaveToJson(JsonWriter* writer, const AdInfo& info);
 void SaveToJson(JsonWriter* writer, const ClientInfo& info);
+void SaveToJson(JsonWriter* writer, const IssuersInfo& info);
+void SaveToJson(JsonWriter* writer, const AdInfo& info);
 void SaveToJson(JsonWriter* writer, const NotificationInfo& info);
 void SaveToJson(JsonWriter* writer, const UrlComponents& components);
 void SaveToJson(JsonWriter* writer, const ClientState& state);
diff --git a/src/mock_ads_client.cc b/src/mock_ads_client.cc
index 9d3d0f6..c7536ce 100644
--- a/src/mock_ads_client.cc
+++ b/src/mock_ads_client.cc
@@ -11,6 +11,7 @@
 #include "mock_ads_client.h"
 #include "bat/ads/bundle_state.h"
 #include "bat/ads/ad_info.h"
+#include "bat/ads/issuers_info.h"
 #include "math_helper.h"
 #include "string_helper.h"
 #include "time_helper.h"
@@ -140,8 +141,7 @@ bool MockAdsClient::IsNotificationsAvailable() const {
   return true;
 }
 
-void MockAdsClient::ShowNotification(
-    std::unique_ptr<NotificationInfo> info) {
+void MockAdsClient::ShowNotification(std::unique_ptr<NotificationInfo> info) {
   std::cout << std::endl << "------------------------------------------------";
   std::cout << std::endl << "Notification shown:";
   std::cout << std::endl << "  advertiser: " << info->advertiser;
@@ -151,12 +151,15 @@ void MockAdsClient::ShowNotification(
   std::cout << std::endl << "  uuid: " << info->uuid;
 }
 
-bool MockAdsClient::CanShowAd(const AdInfo& ad_info) {
-  (void)ad_info;
+void MockAdsClient::SetCatalogIssuers(std::unique_ptr<IssuersInfo> info) {
+  (void)info;
+}
+
+bool MockAdsClient::IsConfirmationsReadyToShowAds() {
   return true;
 }
 
-void MockAdsClient::AdSustained(const NotificationInfo& info) {
+void MockAdsClient::AdSustained(std::unique_ptr<NotificationInfo> info) {
   (void)info;
 }
 
@@ -173,11 +176,6 @@ void MockAdsClient::KillTimer(uint32_t timer_id) {
   (void)timer_id;
 }
 
-void MockAdsClient::OnCatalogIssuersChanged(
-    const std::vector<IssuerInfo>& issuers) {
-  (void)issuers;
-}
-
 void MockAdsClient::URLRequest(
     const std::string& url,
     const std::vector<std::string>& headers,
diff --git a/src/mock_ads_client.h b/src/mock_ads_client.h
index 5465581..b4cde90 100644
--- a/src/mock_ads_client.h
+++ b/src/mock_ads_client.h
@@ -53,16 +53,13 @@ class MockAdsClient : public AdsClient {
   bool IsNotificationsAvailable() const override;
   void ShowNotification(std::unique_ptr<NotificationInfo> info) override;
 
-  bool CanShowAd(const AdInfo& ad_info) override;
-
-  void AdSustained(const NotificationInfo& info) override;
+  void SetCatalogIssuers(std::unique_ptr<IssuersInfo> info) override;
+  bool IsConfirmationsReadyToShowAds() override;
+  void AdSustained(std::unique_ptr<NotificationInfo> info) override;
 
   uint32_t SetTimer(const uint64_t time_offset) override;
   void KillTimer(const uint32_t timer_id) override;
 
-  void OnCatalogIssuersChanged(
-    const std::vector<IssuerInfo>& issuers) override;
-
   void URLRequest(
       const std::string& url,
       const std::vector<std::string>& headers,
diff --git a/test/mock_ads_client.h b/test/mock_ads_client.h
index 2f849d7..4bc445d 100644
--- a/test/mock_ads_client.h
+++ b/test/mock_ads_client.h
@@ -89,18 +89,17 @@ class MockAdsClient : public AdsClient {
   MOCK_METHOD1(ShowNotification, void(
       std::unique_ptr<NotificationInfo> info));
 
-  MOCK_METHOD1(CanShowAd, bool(
-      const AdInfo& ad_info));
+  MOCK_METHOD1(SetCatalogIssuers, void(
+      std::unique_ptr<IssuersInfo> info));
+
+  MOCK_METHOD0(IsConfirmationsReadyToShowAds, bool());
 
   MOCK_METHOD1(AdSustained, void(
-      const NotificationInfo& info));
+      std::unique_ptr<NotificationInfo> info));
 
   MOCK_METHOD1(SetTimer, uint32_t(
       const uint64_t time_offset));
 
-  MOCK_METHOD1(OnCatalogIssuersChanged, void(
-      const std::vector<IssuerInfo>& issuers));
-
   MOCK_METHOD1(KillTimer, void(
       uint32_t timer_id));