diff --git a/src/API.php b/src/API.php
index 34a71830b..86e586905 100644
--- a/src/API.php
+++ b/src/API.php
@@ -51,7 +51,7 @@ final class API extends AbstractAPI
      *
      * @var string
      */
-    public const RELEASE = '8.0.0-beta176';
+    public const RELEASE = '8.0.0-beta177';
     /**
      * We're not logged in.
      *
diff --git a/src/EventHandler/Participant/Banned.php b/src/EventHandler/Participant/Banned.php
index a5eb7999d..cc2d710e0 100644
--- a/src/EventHandler/Participant/Banned.php
+++ b/src/EventHandler/Participant/Banned.php
@@ -18,7 +18,6 @@ namespace danog\MadelineProto\EventHandler\Participant;
 
 use danog\MadelineProto\EventHandler\Participant;
 use danog\MadelineProto\EventHandler\Participant\Rights\Banned as BannedRights;
-use danog\MadelineProto\MTProtoTools\DialogId;
 
 /**
  * Banned/kicked user.
@@ -48,10 +47,6 @@ final class Banned extends Participant
         $this->kickedBy = $rawParticipant['kicked_by'];
         $this->date = $rawParticipant['date'];
         $this->bannedRights = new BannedRights($rawParticipant['banned_rights']);
-        $this->peer = match ($peer['_']) {
-            'peerUser' => $peer['user_id'],
-            'peerChat' => -$peer['chat_id'],
-            'peerChannel' => DialogId::fromSupergroupOrChannel($peer['channel_id']),
-        };
+        $this->peer = $peer;
     }
 }
diff --git a/src/EventHandler/Participant/Left.php b/src/EventHandler/Participant/Left.php
index b448ddf96..d4ae832b0 100644
--- a/src/EventHandler/Participant/Left.php
+++ b/src/EventHandler/Participant/Left.php
@@ -17,7 +17,6 @@
 namespace danog\MadelineProto\EventHandler\Participant;
 
 use danog\MadelineProto\EventHandler\Participant;
-use danog\MadelineProto\MTProtoTools\DialogId;
 
 /**
  * A participant that left the channel/supergroup.
@@ -31,10 +30,6 @@ final class Left extends Participant
     public function __construct(array $rawParticipant)
     {
         $rawParticipant = $rawParticipant['peer'];
-        $this->peer = match ($rawParticipant['_']) {
-            'peerUser' => $rawParticipant['user_id'],
-            'peerChat' => -$rawParticipant['chat_id'],
-            'peerChannel' => DialogId::fromSupergroupOrChannel($rawParticipant['channel_id']),
-        };
+        $this->peer = $rawParticipant['peer'];
     }
 }
diff --git a/src/EventHandler/Typing/ChatUserTyping.php b/src/EventHandler/Typing/ChatUserTyping.php
index e74349fca..cfb1770a0 100644
--- a/src/EventHandler/Typing/ChatUserTyping.php
+++ b/src/EventHandler/Typing/ChatUserTyping.php
@@ -31,6 +31,6 @@ final class ChatUserTyping extends Typing
     public function __construct(MTProto $API, array $rawTyping)
     {
         parent::__construct($API, $rawTyping);
-        $this->chatId = $rawTyping['chat_id'];
+        $this->chatId = -$rawTyping['chat_id'];
     }
 }
diff --git a/src/MTProtoTools/PeerHandler.php b/src/MTProtoTools/PeerHandler.php
index c03f0c5a6..ed5afeddf 100644
--- a/src/MTProtoTools/PeerHandler.php
+++ b/src/MTProtoTools/PeerHandler.php
@@ -855,7 +855,7 @@ trait PeerHandler
         }
         return $res;
     }
-    private function recurseAlphabetSearchParticipants($channel, $filter, $q, $total_count, &$res, int $depth)
+    private function recurseAlphabetSearchParticipants(int $channel, string $filter, string $q, int $total_count, array &$res, int $depth): array
     {
         if (!($this->fetchParticipants($channel, $filter, $q, $total_count, $res))) {
             return [];
@@ -885,7 +885,7 @@ trait PeerHandler
 
         return [];
     }
-    private function fetchParticipants($channel, $filter, $q, $total_count, &$res)
+    private function fetchParticipants(int $channel, string $filter, string $q, int $total_count, array &$res): bool
     {
         $offset = 0;
         $limit = 200;
@@ -907,6 +907,7 @@ trait PeerHandler
             } else {
                 $this->storeParticipantsCache($gres, $channel, $filter, $q, $offset, $limit);
             }
+            \assert($gres !== null);
             if ($last_count !== -1 && $last_count !== $gres['count']) {
                 $has_more = true;
             } else {
@@ -959,7 +960,7 @@ trait PeerHandler
                 });
             }
             await($promises);
-            $h = $hash ? 'present' : 'absent';
+            $h = $hash !== null ? 'present' : 'absent';
             $this->logger->logger('Fetched '.\count($gres['participants'])." channel participants with filter {$filter}, query {$q}, offset {$offset}, limit {$limit}, hash {$h}: ".($cached ? 'cached' : 'not cached').', '.($offset + \count($gres['participants'])).' participants out of '.$gres['count'].', in total fetched '.\count($res['participants']).' out of '.$total_count);
             $offset += \count($gres['participants']);
         } while (\count($gres['participants']));
@@ -975,11 +976,11 @@ trait PeerHandler
     {
         return "$channelId'$filter'$q'$offset'$limit";
     }
-    private function fetchParticipantsCache($channel, $filter, $q, $offset, $limit)
+    private function fetchParticipantsCache(int $channel, string $filter, string $q, int $offset, int $limit): ?array
     {
-        return $this->channelParticipants[$this->participantsKey($channel['channel_id'], $filter, $q, $offset, $limit)];
+        return $this->channelParticipants[$this->participantsKey($channel, $filter, $q, $offset, $limit)];
     }
-    private function storeParticipantsCache($gres, $channel, $filter, $q, $offset, $limit): void
+    private function storeParticipantsCache(array $gres, int $channel, string $filter, string $q, int $offset, int $limit): void
     {
         unset($gres['users']);
         $ids = [];
@@ -990,10 +991,10 @@ trait PeerHandler
         }
         sort($ids, SORT_NUMERIC);
         $gres['hash'] = Tools::genVectorHash($ids);
-        $this->channelParticipants[$this->participantsKey($channel['channel_id'], $filter, $q, $offset, $limit)] = $gres;
+        $this->channelParticipants[$this->participantsKey($channel, $filter, $q, $offset, $limit)] = $gres;
     }
-    private function getParticipantsHash($channel, $filter, $q, $offset, $limit)
+    private function getParticipantsHash(int $channel, string $filter, string $q, int $offset, int $limit): ?string
     {
-        return ($this->channelParticipants[$this->participantsKey($channel['channel_id'], $filter, $q, $offset, $limit)])['hash'] ?? 0;
+        return $this->fetchParticipantsCache($channel, $filter, $q, $offset, $limit)['hash'] ?? null;
     }
 }
diff --git a/src/MTProtoTools/UpdateHandler.php b/src/MTProtoTools/UpdateHandler.php
index ccba81359..ffb7bbe3c 100644
--- a/src/MTProtoTools/UpdateHandler.php
+++ b/src/MTProtoTools/UpdateHandler.php
@@ -555,14 +555,14 @@ trait UpdateHandler
                     $this,
                     $message,
                     $info,
-                    $message['action']['channel_id'],
+                    DialogId::fromSupergroupOrChannel($message['action']['channel_id']),
                 ),
                 'messageActionChannelMigrateFrom' => new DialogChannelMigrateFrom(
                     $this,
                     $message,
                     $info,
                     $message['action']['title'],
-                    $message['action']['chat_id'],
+                    -$message['action']['chat_id'],
                 ),
                 'messageActionGameScore' => new DialogGameScore(
                     $this,