diff --git a/contracts/deployments/chatroom/alephzero-testnet.ts b/contracts/deployments/chatroom/alephzero-testnet.ts
index fcfe394..6bc7007 100644
--- a/contracts/deployments/chatroom/alephzero-testnet.ts
+++ b/contracts/deployments/chatroom/alephzero-testnet.ts
@@ -1,2 +1,2 @@
-export const address = '5Ebup7yb8hMRb3pfzRxyTjNvRatnZieTsh5GeLtc38Cr2uvc'
-export const blockNumber = 56383197
+export const address = '5GpiEYmPMVqMcJaR3eeDm4z8a5qZBsAmshYYSCBtuHYa96Bk'
+export const blockNumber = 56675826
diff --git a/contracts/deployments/chatroom/chatroom.contract b/contracts/deployments/chatroom/chatroom.contract
index d7e0dc0..119cf31 100644
--- a/contracts/deployments/chatroom/chatroom.contract
+++ b/contracts/deployments/chatroom/chatroom.contract
@@ -1 +1 @@
-{"source":{"hash":"0x99b5dc5c125fb6cfd87e38133acca4918d6dab6e49b27ec665e97ef0ee9bbe0a","language":"ink! 4.3.0","compiler":"rustc 1.76.0","wasm":"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diff --git a/contracts/deployments/chatroom/chatroom.json b/contracts/deployments/chatroom/chatroom.json
index fd25426..a76199c 100644
--- a/contracts/deployments/chatroom/chatroom.json
+++ b/contracts/deployments/chatroom/chatroom.json
@@ -1,6 +1,6 @@
 {
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-    "hash": "0x99b5dc5c125fb6cfd87e38133acca4918d6dab6e49b27ec665e97ef0ee9bbe0a",
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@@ -33,7 +33,7 @@
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           "Timestamp"
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@@ -84,7 +84,7 @@
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@@ -99,7 +99,7 @@
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@@ -125,7 +125,7 @@
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@@ -160,7 +160,7 @@
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@@ -195,7 +195,7 @@
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@@ -303,7 +303,7 @@
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@@ -317,7 +317,7 @@
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@@ -343,7 +343,7 @@
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@@ -376,15 +376,6 @@
                               "ty": 3
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@@ -402,7 +393,7 @@
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@@ -416,7 +407,7 @@
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@@ -473,24 +464,6 @@
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@@ -498,7 +471,7 @@
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@@ -508,17 +481,17 @@
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@@ -530,12 +503,12 @@
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@@ -549,7 +522,15 @@
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+      "type": {
+        "def": {
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@@ -557,7 +538,7 @@
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@@ -566,7 +547,7 @@
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@@ -591,7 +572,7 @@
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@@ -599,7 +580,7 @@
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@@ -618,7 +599,7 @@
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@@ -635,7 +616,7 @@
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                   {
-                    "type": 11
+                    "type": 10
                   }
                 ],
                 "index": 1,
@@ -651,7 +632,7 @@
           },
           {
             "name": "E",
-            "type": 11
+            "type": 10
           }
         ],
         "path": [
@@ -660,7 +641,7 @@
       }
     },
     {
-      "id": 13,
+      "id": 12,
       "type": {
         "def": {
           "variant": {
@@ -668,7 +649,7 @@
               {
                 "fields": [
                   {
-                    "type": 14
+                    "type": 13
                   }
                 ],
                 "index": 0,
@@ -677,7 +658,7 @@
               {
                 "fields": [
                   {
-                    "type": 11
+                    "type": 10
                   }
                 ],
                 "index": 1,
@@ -689,11 +670,11 @@
         "params": [
           {
             "name": "T",
-            "type": 14
+            "type": 13
           },
           {
             "name": "E",
-            "type": 11
+            "type": 10
           }
         ],
         "path": [
@@ -702,7 +683,7 @@
       }
     },
     {
-      "id": 14,
+      "id": 13,
       "type": {
         "def": {
           "variant": {
@@ -714,7 +695,7 @@
               {
                 "fields": [
                   {
-                    "type": 15
+                    "type": 14
                   }
                 ],
                 "index": 1,
@@ -726,7 +707,7 @@
         "params": [
           {
             "name": "T",
-            "type": 15
+            "type": 14
           }
         ],
         "path": [
@@ -735,7 +716,7 @@
       }
     },
     {
-      "id": 15,
+      "id": 14,
       "type": {
         "def": {
           "composite": {
@@ -745,14 +726,9 @@
                 "type": 0,
                 "typeName": "AccountId"
               },
-              {
-                "name": "messages",
-                "type": 3,
-                "typeName": "Vec<String>"
-              },
               {
                 "name": "timeout",
-                "type": 5,
+                "type": 3,
                 "typeName": "Timestamp"
               }
             ]
@@ -766,7 +742,7 @@
       }
     },
     {
-      "id": 16,
+      "id": 15,
       "type": {
         "def": {
           "variant": {
@@ -774,7 +750,7 @@
               {
                 "fields": [
                   {
-                    "type": 17
+                    "type": 16
                   }
                 ],
                 "index": 0,
@@ -783,7 +759,7 @@
               {
                 "fields": [
                   {
-                    "type": 11
+                    "type": 10
                   }
                 ],
                 "index": 1,
@@ -795,11 +771,11 @@
         "params": [
           {
             "name": "T",
-            "type": 17
+            "type": 16
           },
           {
             "name": "E",
-            "type": 11
+            "type": 10
           }
         ],
         "path": [
@@ -808,7 +784,7 @@
       }
     },
     {
-      "id": 17,
+      "id": 16,
       "type": {
         "def": {
           "primitive": "bool"
@@ -816,7 +792,7 @@
       }
     },
     {
-      "id": 18,
+      "id": 17,
       "type": {
         "def": {
           "variant": {
@@ -824,7 +800,7 @@
               {
                 "fields": [
                   {
-                    "type": 3
+                    "type": 5
                   }
                 ],
                 "index": 0,
@@ -833,7 +809,7 @@
               {
                 "fields": [
                   {
-                    "type": 11
+                    "type": 10
                   }
                 ],
                 "index": 1,
@@ -845,11 +821,11 @@
         "params": [
           {
             "name": "T",
-            "type": 3
+            "type": 5
           },
           {
             "name": "E",
-            "type": 11
+            "type": 10
           }
         ],
         "path": [
@@ -858,7 +834,7 @@
       }
     },
     {
-      "id": 19,
+      "id": 18,
       "type": {
         "def": {
           "primitive": "u128"
@@ -866,7 +842,7 @@
       }
     },
     {
-      "id": 20,
+      "id": 19,
       "type": {
         "def": {
           "composite": {
@@ -886,7 +862,7 @@
       }
     },
     {
-      "id": 21,
+      "id": 20,
       "type": {
         "def": {
           "primitive": "u32"
@@ -894,7 +870,7 @@
       }
     },
     {
-      "id": 22,
+      "id": 21,
       "type": {
         "def": {
           "variant": {}
diff --git a/contracts/deployments/chatroom/chatroom.wasm b/contracts/deployments/chatroom/chatroom.wasm
index 62e6824..6df3915 100644
Binary files a/contracts/deployments/chatroom/chatroom.wasm and b/contracts/deployments/chatroom/chatroom.wasm differ
diff --git a/contracts/src/chatroom/lib.rs b/contracts/src/chatroom/lib.rs
index 7ed7b60..a804f7f 100755
--- a/contracts/src/chatroom/lib.rs
+++ b/contracts/src/chatroom/lib.rs
@@ -25,7 +25,6 @@ mod chatroom {
     )]
     pub struct Room {
         owner: AccountId,
-        messages: Vec<String>,
         timeout: Timestamp,
     }
 
@@ -55,7 +54,6 @@ mod chatroom {
             let timeout = self.env().block_timestamp() + &3600000; // 60 minutes destroy chatroom in 60 minutes
             let new_chatroom = Room {
                 owner: Self::env().caller(),
-                messages: Vec::new(),
                 timeout: timeout,
             };
 
@@ -67,6 +65,15 @@ mod chatroom {
             new_participants.push(caller);
             self.participants.insert(caller, &new_participants);
 
+            // Store the messages
+            let mut new_messages = Vec::new();
+            new_messages.push(Message {
+                sender: caller,
+                content: String::from("Welcome to whisper!"),
+                sent_timestamp: self.env().block_timestamp(),
+            });
+            self.messages.insert(caller, &new_messages);
+
             caller // caller account_id is the id for the chatroom
         }
 
@@ -116,16 +123,19 @@ mod chatroom {
                 None => panic!("Chatroom doesn't exist"),
             };
 
-            let mut room = self.chatrooms.get(chatroom_id).unwrap();
+            let mut messages = self.messages.get(chatroom_id).unwrap();
 
-            // let mut messages = chatroom.messages;
-            room.messages.push(message);
+            messages.push(Message {
+                sender: caller,
+                content: message,
+                sent_timestamp: self.env().block_timestamp(),
+            });
 
-            self.chatrooms.insert(chatroom_id, &room);
+            self.messages.insert(chatroom_id, &messages);
         }
 
         #[ink(message)]
-        pub fn get_messages(&self, chatroom_id: AccountId) -> Vec<String> {
+        pub fn get_messages(&self, chatroom_id: AccountId) -> Vec<Message> {
             let caller = self.env().caller();
             // Ensure the sender is a participant of the chatroom
             match self.participants.get(&chatroom_id) {
@@ -137,10 +147,8 @@ mod chatroom {
                 }
                 None => panic!("Chatroom doesn't exist"),
             };
-            let room = self.get_chatroom(chatroom_id).unwrap();
 
-            // Retrieve messages for the caller if any
-            room.messages
+            self.messages.get(chatroom_id).unwrap()
         }
 
         #[ink(message)]
@@ -262,6 +270,8 @@ mod chatroom {
             chatroom.invite(chatroom_id, accounts.alice);
             chatroom.invite(chatroom_id, accounts.charlie);
 
+            // test to see if member is a participant
+
             // account 2 send message
             ink::env::test::set_caller::<ink::env::DefaultEnvironment>(accounts.alice); // set account2 as the current caller
             let message1 = String::from("This is the first message");
@@ -269,7 +279,12 @@ mod chatroom {
 
             // check message1
             assert!(
-                chatroom.get_messages(chatroom_id).contains(&message1),
+                chatroom
+                    .messages
+                    .get(chatroom_id)
+                    .unwrap()
+                    .iter()
+                    .any(|e| e.content == message1),
                 "Message does not exist"
             );
 
@@ -280,7 +295,12 @@ mod chatroom {
 
             // check message2
             assert!(
-                chatroom.get_messages(chatroom_id).contains(&message2),
+                chatroom
+                    .messages
+                    .get(chatroom_id)
+                    .unwrap()
+                    .iter()
+                    .any(|e| e.content == message2),
                 "Message does not exist"
             );
         }
@@ -304,6 +324,26 @@ mod chatroom {
             chatroom.delete_chatroom(chatroom_id);
         }
 
+        #[ink::test]
+        fn is_a_participant_works() {
+            let accounts = ink::env::test::default_accounts::<ink::env::DefaultEnvironment>();
+
+            let chatroom_id = accounts.bob.clone();
+            ink::env::test::set_caller::<ink::env::DefaultEnvironment>(chatroom_id);
+
+            let mut chatroom = Chatroom::new();
+            chatroom.create_chatroom();
+
+            // invite alice & charlie
+            chatroom.invite(chatroom_id, accounts.alice);
+            chatroom.invite(chatroom_id, accounts.charlie);
+
+            assert!(chatroom.is_a_participant(chatroom_id, accounts.alice));
+            assert!(!chatroom.is_a_participant(chatroom_id, accounts.eve)); // eve has not been invited, so it should fail
+
+            // test to see if member is a participant
+        }
+
         // TODO write a test for auto delete after 60 minutes
     }
 }
diff --git a/contracts/typed-contracts/contract-info/chatroom.ts b/contracts/typed-contracts/contract-info/chatroom.ts
index 5d5249b..f97dc7a 100644
--- a/contracts/typed-contracts/contract-info/chatroom.ts
+++ b/contracts/typed-contracts/contract-info/chatroom.ts
@@ -1,2 +1,2 @@
-export const ContractAbi = `{"source":{"hash":"0x99b5dc5c125fb6cfd87e38133acca4918d6dab6e49b27ec665e97ef0ee9bbe0a","language":"ink! 4.3.0","compiler":"rustc 1.76.0","build_info":{"build_mode":"Release","cargo_contract_version":"3.2.0","rust_toolchain":"stable-x86_64-unknown-linux-gnu","wasm_opt_settings":{"keep_debug_symbols":false,"optimization_passes":"Z"}}},"contract":{"name":"chatroom","version":"0.1.0","authors":["od41 <[your_email]>"]},"spec":{"constructors":[{"args":[],"default":false,"docs":[],"label":"new","payable":false,"returnType":{"displayName":["ink_primitives","ConstructorResult"],"type":9},"selector":"0x9bae9d5e"}],"docs":[],"environment":{"accountId":{"displayName":["AccountId"],"type":0},"balance":{"displayName":["Balance"],"type":19},"blockNumber":{"displayName":["BlockNumber"],"type":21},"chainExtension":{"displayName":["ChainExtension"],"type":22},"hash":{"displayName":["Hash"],"type":20},"maxEventTopics":4,"timestamp":{"displayName":["Timestamp"],"type":5}},"events":[],"lang_error":{"displayName":["ink","LangError"],"type":11},"messages":[{"args":[],"default":false,"docs":[],"label":"create_chatroom","mutates":true,"payable":false,"returnType":{"displayName":["ink","MessageResult"],"type":12},"selector":"0x34968102"},{"args":[{"label":"chatroom_id","type":{"displayName":["AccountId"],"type":0}}],"default":false,"docs":[],"label":"get_chatroom","mutates":false,"payable":false,"returnType":{"displayName":["ink","MessageResult"],"type":13},"selector":"0xdb1c66f5"},{"args":[{"label":"chatroom_id","type":{"displayName":["AccountId"],"type":0}},{"label":"participant_id","type":{"displayName":["AccountId"],"type":0}}],"default":false,"docs":[],"label":"is_a_participant","mutates":false,"payable":false,"returnType":{"displayName":["ink","MessageResult"],"type":16},"selector":"0xbe5599da"},{"args":[{"label":"chatroom_id","type":{"displayName":["AccountId"],"type":0}},{"label":"participant","type":{"displayName":["AccountId"],"type":0}}],"default":false,"docs":[],"label":"invite","mutates":true,"payable":false,"returnType":{"displayName":["ink","MessageResult"],"type":9},"selector":"0x8d55fa39"},{"args":[{"label":"chatroom_id","type":{"displayName":["AccountId"],"type":0}},{"label":"message","type":{"displayName":["String"],"type":4}}],"default":false,"docs":[],"label":"send_message","mutates":true,"payable":false,"returnType":{"displayName":["ink","MessageResult"],"type":9},"selector":"0xafdc403f"},{"args":[{"label":"chatroom_id","type":{"displayName":["AccountId"],"type":0}}],"default":false,"docs":[],"label":"get_messages","mutates":false,"payable":false,"returnType":{"displayName":["ink","MessageResult"],"type":18},"selector":"0xa9eb1c14"},{"args":[{"label":"chatroom_id","type":{"displayName":["AccountId"],"type":0}}],"default":false,"docs":[],"label":"delete_chatroom","mutates":true,"payable":false,"returnType":{"displayName":["ink","MessageResult"],"type":9},"selector":"0x53f64fda"},{"args":[{"label":"chatroom_id","type":{"displayName":["AccountId"],"type":0}},{"label":"timeout","type":{"displayName":["Timestamp"],"type":5}}],"default":false,"docs":[],"label":"set_timeout","mutates":true,"payable":false,"returnType":{"displayName":["ink","MessageResult"],"type":9},"selector":"0x7a9acd65"},{"args":[{"label":"chatroom_id","type":{"displayName":["AccountId"],"type":0}}],"default":false,"docs":[],"label":"check_timeout","mutates":true,"payable":false,"returnType":{"displayName":["ink","MessageResult"],"type":9},"selector":"0x40280ee8"}]},"storage":{"root":{"layout":{"struct":{"fields":[{"layout":{"root":{"layout":{"struct":{"fields":[{"layout":{"leaf":{"key":"0x7d9c6299","ty":0}},"name":"owner"},{"layout":{"leaf":{"key":"0x7d9c6299","ty":3}},"name":"messages"},{"layout":{"leaf":{"key":"0x7d9c6299","ty":5}},"name":"timeout"}],"name":"Room"}},"root_key":"0x7d9c6299"}},"name":"chatrooms"},{"layout":{"root":{"layout":{"leaf":{"key":"0x6f642ceb","ty":6}},"root_key":"0x6f642ceb"}},"name":"participants"},{"layout":{"root":{"layout":{"leaf":{"key":"0x2d625b4e","ty":7}},"root_key":"0x2d625b4e"}},"name":"messages"}],"name":"Chatroom"}},"root_key":"0x00000000"}},"types":[{"id":0,"type":{"def":{"composite":{"fields":[{"type":1,"typeName":"[u8; 32]"}]}},"path":["ink_primitives","types","AccountId"]}},{"id":1,"type":{"def":{"array":{"len":32,"type":2}}}},{"id":2,"type":{"def":{"primitive":"u8"}}},{"id":3,"type":{"def":{"sequence":{"type":4}}}},{"id":4,"type":{"def":{"primitive":"str"}}},{"id":5,"type":{"def":{"primitive":"u64"}}},{"id":6,"type":{"def":{"sequence":{"type":0}}}},{"id":7,"type":{"def":{"sequence":{"type":8}}}},{"id":8,"type":{"def":{"composite":{"fields":[{"name":"sender","type":0,"typeName":"AccountId"},{"name":"content","type":4,"typeName":"String"},{"name":"sent_timestamp","type":5,"typeName":"Timestamp"}]}},"path":["chatroom","chatroom","Message"]}},{"id":9,"type":{"def":{"variant":{"variants":[{"fields":[{"type":10}],"index":0,"name":"Ok"},{"fields":[{"type":11}],"index":1,"name":"Err"}]}},"params":[{"name":"T","type":10},{"name":"E","type":11}],"path":["Result"]}},{"id":10,"type":{"def":{"tuple":[]}}},{"id":11,"type":{"def":{"variant":{"variants":[{"index":1,"name":"CouldNotReadInput"}]}},"path":["ink_primitives","LangError"]}},{"id":12,"type":{"def":{"variant":{"variants":[{"fields":[{"type":0}],"index":0,"name":"Ok"},{"fields":[{"type":11}],"index":1,"name":"Err"}]}},"params":[{"name":"T","type":0},{"name":"E","type":11}],"path":["Result"]}},{"id":13,"type":{"def":{"variant":{"variants":[{"fields":[{"type":14}],"index":0,"name":"Ok"},{"fields":[{"type":11}],"index":1,"name":"Err"}]}},"params":[{"name":"T","type":14},{"name":"E","type":11}],"path":["Result"]}},{"id":14,"type":{"def":{"variant":{"variants":[{"index":0,"name":"None"},{"fields":[{"type":15}],"index":1,"name":"Some"}]}},"params":[{"name":"T","type":15}],"path":["Option"]}},{"id":15,"type":{"def":{"composite":{"fields":[{"name":"owner","type":0,"typeName":"AccountId"},{"name":"messages","type":3,"typeName":"Vec<String>"},{"name":"timeout","type":5,"typeName":"Timestamp"}]}},"path":["chatroom","chatroom","Room"]}},{"id":16,"type":{"def":{"variant":{"variants":[{"fields":[{"type":17}],"index":0,"name":"Ok"},{"fields":[{"type":11}],"index":1,"name":"Err"}]}},"params":[{"name":"T","type":17},{"name":"E","type":11}],"path":["Result"]}},{"id":17,"type":{"def":{"primitive":"bool"}}},{"id":18,"type":{"def":{"variant":{"variants":[{"fields":[{"type":3}],"index":0,"name":"Ok"},{"fields":[{"type":11}],"index":1,"name":"Err"}]}},"params":[{"name":"T","type":3},{"name":"E","type":11}],"path":["Result"]}},{"id":19,"type":{"def":{"primitive":"u128"}}},{"id":20,"type":{"def":{"composite":{"fields":[{"type":1,"typeName":"[u8; 32]"}]}},"path":["ink_primitives","types","Hash"]}},{"id":21,"type":{"def":{"primitive":"u32"}}},{"id":22,"type":{"def":{"variant":{}},"path":["ink_env","types","NoChainExtension"]}}],"version":"4"}`;
-export const ContractFile = `{"source":{"hash":"0x99b5dc5c125fb6cfd87e38133acca4918d6dab6e49b27ec665e97ef0ee9bbe0a","language":"ink! 4.3.0","compiler":"rustc 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+export const ContractFile = `{"source":{"hash":"0x7190db7b8123fd07458afd55a9843488fe35ef32e6d6f42484d49af718b7151b","language":"ink! 4.3.0","compiler":"rustc 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diff --git a/contracts/typed-contracts/data/chatroom.json b/contracts/typed-contracts/data/chatroom.json
index 6195a74..6127d37 100644
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 {
-"0": {"name":"AccountId","body":"string | number[]","isResult":false,"isPrimitive":true,"isConvertable":false},"1": {"name":"Array","body":{"0":{"name":"number","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"2": {"name":"number","isResult":false,"isPrimitive":true,"isConvertable":false},"3": {"name":"Array","body":{"0":{"name":"string","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"4": {"name":"string","isResult":false,"isPrimitive":true,"isConvertable":false},"5": {"name":"number","isResult":false,"isPrimitive":true,"isConvertable":false},"8": {"name":"Message","body":{"sender":{"name":"AccountId","body":"string | number[]","isResult":false,"isPrimitive":true,"isConvertable":false},"content":{"name":"string","isResult":false,"isPrimitive":true,"isConvertable":false},"sentTimestamp":{"name":"number","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"9": {"name":"Result<null, LangError","body":{"ok":{"name":"null","isResult":false,"isPrimitive":true,"isConvertable":false},"err":{"name":"LangError","body":{"CouldNotReadInput":null},"isResult":false,"isPrimitive":false,"isConvertable":false}},"isResult":true,"isPrimitive":false,"isConvertable":false},"10": {"name":"null","isResult":false,"isPrimitive":true,"isConvertable":false},"11": {"name":"LangError","body":{"CouldNotReadInput":null},"isResult":false,"isPrimitive":false,"isConvertable":false},"12": {"name":"Result<AccountId, LangError","body":{"ok":{"name":"AccountId","body":"string | number[]","isResult":false,"isPrimitive":true,"isConvertable":false},"err":{"name":"LangError","body":{"CouldNotReadInput":null},"isResult":false,"isPrimitive":false,"isConvertable":false}},"isResult":true,"isPrimitive":false,"isConvertable":false},"13": {"name":"Result<Option, LangError","body":{"ok":{"name":"Option","body":{"0":{"name":"Room","body":{"owner":{"name":"AccountId","body":"string | number[]","isResult":false,"isPrimitive":true,"isConvertable":false},"messages":{"name":"Array","body":{"0":{"name":"string","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"timeout":{"name":"number","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"1":{"name":"null","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"err":{"name":"LangError","body":{"CouldNotReadInput":null},"isResult":false,"isPrimitive":false,"isConvertable":false}},"isResult":true,"isPrimitive":false,"isConvertable":false},"14": {"name":"Option","body":{"0":{"name":"Room","body":{"owner":{"name":"AccountId","body":"string | number[]","isResult":false,"isPrimitive":true,"isConvertable":false},"messages":{"name":"Array","body":{"0":{"name":"string","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"timeout":{"name":"number","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"1":{"name":"null","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"15": {"name":"Room","body":{"owner":{"name":"AccountId","body":"string | number[]","isResult":false,"isPrimitive":true,"isConvertable":false},"messages":{"name":"Array","body":{"0":{"name":"string","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"timeout":{"name":"number","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"16": {"name":"Result<boolean, LangError","body":{"ok":{"name":"boolean","isResult":false,"isPrimitive":true,"isConvertable":false},"err":{"name":"LangError","body":{"CouldNotReadInput":null},"isResult":false,"isPrimitive":false,"isConvertable":false}},"isResult":true,"isPrimitive":false,"isConvertable":false},"17": {"name":"boolean","isResult":false,"isPrimitive":true,"isConvertable":false},"18": {"name":"Result<Array, LangError","body":{"ok":{"name":"Array","body":{"0":{"name":"string","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"err":{"name":"LangError","body":{"CouldNotReadInput":null},"isResult":false,"isPrimitive":false,"isConvertable":false}},"isResult":true,"isPrimitive":false,"isConvertable":false}
+"0": {"name":"AccountId","body":"string | number[]","isResult":false,"isPrimitive":true,"isConvertable":false},"1": {"name":"Array","body":{"0":{"name":"number","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"2": {"name":"number","isResult":false,"isPrimitive":true,"isConvertable":false},"3": {"name":"number","isResult":false,"isPrimitive":true,"isConvertable":false},"5": {"name":"Array","body":{"0":{"name":"Message","body":{"sender":{"name":"AccountId","body":"string | number[]","isResult":false,"isPrimitive":true,"isConvertable":false},"content":{"name":"string","isResult":false,"isPrimitive":true,"isConvertable":false},"sentTimestamp":{"name":"number","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"6": {"name":"Message","body":{"sender":{"name":"AccountId","body":"string | number[]","isResult":false,"isPrimitive":true,"isConvertable":false},"content":{"name":"string","isResult":false,"isPrimitive":true,"isConvertable":false},"sentTimestamp":{"name":"number","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"7": {"name":"string","isResult":false,"isPrimitive":true,"isConvertable":false},"8": {"name":"Result<null, LangError","body":{"ok":{"name":"null","isResult":false,"isPrimitive":true,"isConvertable":false},"err":{"name":"LangError","body":{"CouldNotReadInput":null},"isResult":false,"isPrimitive":false,"isConvertable":false}},"isResult":true,"isPrimitive":false,"isConvertable":false},"9": {"name":"null","isResult":false,"isPrimitive":true,"isConvertable":false},"10": {"name":"LangError","body":{"CouldNotReadInput":null},"isResult":false,"isPrimitive":false,"isConvertable":false},"11": {"name":"Result<AccountId, LangError","body":{"ok":{"name":"AccountId","body":"string | number[]","isResult":false,"isPrimitive":true,"isConvertable":false},"err":{"name":"LangError","body":{"CouldNotReadInput":null},"isResult":false,"isPrimitive":false,"isConvertable":false}},"isResult":true,"isPrimitive":false,"isConvertable":false},"12": {"name":"Result<Option, LangError","body":{"ok":{"name":"Option","body":{"0":{"name":"Room","body":{"owner":{"name":"AccountId","body":"string | number[]","isResult":false,"isPrimitive":true,"isConvertable":false},"timeout":{"name":"number","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"1":{"name":"null","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"err":{"name":"LangError","body":{"CouldNotReadInput":null},"isResult":false,"isPrimitive":false,"isConvertable":false}},"isResult":true,"isPrimitive":false,"isConvertable":false},"13": {"name":"Option","body":{"0":{"name":"Room","body":{"owner":{"name":"AccountId","body":"string | number[]","isResult":false,"isPrimitive":true,"isConvertable":false},"timeout":{"name":"number","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"1":{"name":"null","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"14": {"name":"Room","body":{"owner":{"name":"AccountId","body":"string | number[]","isResult":false,"isPrimitive":true,"isConvertable":false},"timeout":{"name":"number","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"15": {"name":"Result<boolean, LangError","body":{"ok":{"name":"boolean","isResult":false,"isPrimitive":true,"isConvertable":false},"err":{"name":"LangError","body":{"CouldNotReadInput":null},"isResult":false,"isPrimitive":false,"isConvertable":false}},"isResult":true,"isPrimitive":false,"isConvertable":false},"16": {"name":"boolean","isResult":false,"isPrimitive":true,"isConvertable":false},"17": {"name":"Result<Array, LangError","body":{"ok":{"name":"Array","body":{"0":{"name":"Message","body":{"sender":{"name":"AccountId","body":"string | number[]","isResult":false,"isPrimitive":true,"isConvertable":false},"content":{"name":"string","isResult":false,"isPrimitive":true,"isConvertable":false},"sentTimestamp":{"name":"number","isResult":false,"isPrimitive":true,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false}},"isResult":false,"isPrimitive":false,"isConvertable":false},"err":{"name":"LangError","body":{"CouldNotReadInput":null},"isResult":false,"isPrimitive":false,"isConvertable":false}},"isResult":true,"isPrimitive":false,"isConvertable":false}
 }
\ No newline at end of file
diff --git a/contracts/typed-contracts/mixed-methods/chatroom.ts b/contracts/typed-contracts/mixed-methods/chatroom.ts
index 3bc4f94..705538f 100644
--- a/contracts/typed-contracts/mixed-methods/chatroom.ts
+++ b/contracts/typed-contracts/mixed-methods/chatroom.ts
@@ -60,7 +60,7 @@ export default class Methods {
 		chatroomId: ArgumentTypes.AccountId,
 		__options: GasLimit,
 	): Promise< QueryReturnType< Result<ReturnTypes.Room | null, ReturnTypes.LangError> > >{
-		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "getChatroom", [chatroomId], __options, (result) => { return handleReturnType(result, getTypeDescription(13, DATA_TYPE_DESCRIPTIONS)); });
+		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "getChatroom", [chatroomId], __options, (result) => { return handleReturnType(result, getTypeDescription(12, DATA_TYPE_DESCRIPTIONS)); });
 	}
 
 	/**
@@ -75,7 +75,7 @@ export default class Methods {
 		participantId: ArgumentTypes.AccountId,
 		__options: GasLimit,
 	): Promise< QueryReturnType< Result<boolean, ReturnTypes.LangError> > >{
-		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "isAParticipant", [chatroomId, participantId], __options, (result) => { return handleReturnType(result, getTypeDescription(16, DATA_TYPE_DESCRIPTIONS)); });
+		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "isAParticipant", [chatroomId, participantId], __options, (result) => { return handleReturnType(result, getTypeDescription(15, DATA_TYPE_DESCRIPTIONS)); });
 	}
 
 	/**
@@ -116,13 +116,13 @@ export default class Methods {
 	* getMessages
 	*
 	* @param { ArgumentTypes.AccountId } chatroomId,
-	* @returns { Result<Array<string>, ReturnTypes.LangError> }
+	* @returns { Result<Array<ReturnTypes.Message>, ReturnTypes.LangError> }
 	*/
 	"getMessages" (
 		chatroomId: ArgumentTypes.AccountId,
 		__options: GasLimit,
-	): Promise< QueryReturnType< Result<Array<string>, ReturnTypes.LangError> > >{
-		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "getMessages", [chatroomId], __options, (result) => { return handleReturnType(result, getTypeDescription(18, DATA_TYPE_DESCRIPTIONS)); });
+	): Promise< QueryReturnType< Result<Array<ReturnTypes.Message>, ReturnTypes.LangError> > >{
+		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "getMessages", [chatroomId], __options, (result) => { return handleReturnType(result, getTypeDescription(17, DATA_TYPE_DESCRIPTIONS)); });
 	}
 
 	/**
diff --git a/contracts/typed-contracts/query/chatroom.ts b/contracts/typed-contracts/query/chatroom.ts
index 22f1765..82bcb23 100644
--- a/contracts/typed-contracts/query/chatroom.ts
+++ b/contracts/typed-contracts/query/chatroom.ts
@@ -37,7 +37,7 @@ export default class Methods {
 	"createChatroom" (
 		__options ? : GasLimit,
 	): Promise< QueryReturnType< Result<ReturnTypes.AccountId, ReturnTypes.LangError> > >{
-		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "createChatroom", [], __options , (result) => { return handleReturnType(result, getTypeDescription(12, DATA_TYPE_DESCRIPTIONS)); });
+		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "createChatroom", [], __options , (result) => { return handleReturnType(result, getTypeDescription(11, DATA_TYPE_DESCRIPTIONS)); });
 	}
 
 	/**
@@ -50,7 +50,7 @@ export default class Methods {
 		chatroomId: ArgumentTypes.AccountId,
 		__options ? : GasLimit,
 	): Promise< QueryReturnType< Result<ReturnTypes.Room | null, ReturnTypes.LangError> > >{
-		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "getChatroom", [chatroomId], __options , (result) => { return handleReturnType(result, getTypeDescription(13, DATA_TYPE_DESCRIPTIONS)); });
+		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "getChatroom", [chatroomId], __options , (result) => { return handleReturnType(result, getTypeDescription(12, DATA_TYPE_DESCRIPTIONS)); });
 	}
 
 	/**
@@ -65,7 +65,7 @@ export default class Methods {
 		participantId: ArgumentTypes.AccountId,
 		__options ? : GasLimit,
 	): Promise< QueryReturnType< Result<boolean, ReturnTypes.LangError> > >{
-		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "isAParticipant", [chatroomId, participantId], __options , (result) => { return handleReturnType(result, getTypeDescription(16, DATA_TYPE_DESCRIPTIONS)); });
+		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "isAParticipant", [chatroomId, participantId], __options , (result) => { return handleReturnType(result, getTypeDescription(15, DATA_TYPE_DESCRIPTIONS)); });
 	}
 
 	/**
@@ -80,7 +80,7 @@ export default class Methods {
 		participant: ArgumentTypes.AccountId,
 		__options ? : GasLimit,
 	): Promise< QueryReturnType< Result<null, ReturnTypes.LangError> > >{
-		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "invite", [chatroomId, participant], __options , (result) => { return handleReturnType(result, getTypeDescription(9, DATA_TYPE_DESCRIPTIONS)); });
+		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "invite", [chatroomId, participant], __options , (result) => { return handleReturnType(result, getTypeDescription(8, DATA_TYPE_DESCRIPTIONS)); });
 	}
 
 	/**
@@ -95,20 +95,20 @@ export default class Methods {
 		message: string,
 		__options ? : GasLimit,
 	): Promise< QueryReturnType< Result<null, ReturnTypes.LangError> > >{
-		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "sendMessage", [chatroomId, message], __options , (result) => { return handleReturnType(result, getTypeDescription(9, DATA_TYPE_DESCRIPTIONS)); });
+		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "sendMessage", [chatroomId, message], __options , (result) => { return handleReturnType(result, getTypeDescription(8, DATA_TYPE_DESCRIPTIONS)); });
 	}
 
 	/**
 	* getMessages
 	*
 	* @param { ArgumentTypes.AccountId } chatroomId,
-	* @returns { Result<Array<string>, ReturnTypes.LangError> }
+	* @returns { Result<Array<ReturnTypes.Message>, ReturnTypes.LangError> }
 	*/
 	"getMessages" (
 		chatroomId: ArgumentTypes.AccountId,
 		__options ? : GasLimit,
-	): Promise< QueryReturnType< Result<Array<string>, ReturnTypes.LangError> > >{
-		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "getMessages", [chatroomId], __options , (result) => { return handleReturnType(result, getTypeDescription(18, DATA_TYPE_DESCRIPTIONS)); });
+	): Promise< QueryReturnType< Result<Array<ReturnTypes.Message>, ReturnTypes.LangError> > >{
+		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "getMessages", [chatroomId], __options , (result) => { return handleReturnType(result, getTypeDescription(17, DATA_TYPE_DESCRIPTIONS)); });
 	}
 
 	/**
@@ -121,7 +121,7 @@ export default class Methods {
 		chatroomId: ArgumentTypes.AccountId,
 		__options ? : GasLimit,
 	): Promise< QueryReturnType< Result<null, ReturnTypes.LangError> > >{
-		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "deleteChatroom", [chatroomId], __options , (result) => { return handleReturnType(result, getTypeDescription(9, DATA_TYPE_DESCRIPTIONS)); });
+		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "deleteChatroom", [chatroomId], __options , (result) => { return handleReturnType(result, getTypeDescription(8, DATA_TYPE_DESCRIPTIONS)); });
 	}
 
 	/**
@@ -136,7 +136,7 @@ export default class Methods {
 		timeout: (number | string | BN),
 		__options ? : GasLimit,
 	): Promise< QueryReturnType< Result<null, ReturnTypes.LangError> > >{
-		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "setTimeout", [chatroomId, timeout], __options , (result) => { return handleReturnType(result, getTypeDescription(9, DATA_TYPE_DESCRIPTIONS)); });
+		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "setTimeout", [chatroomId, timeout], __options , (result) => { return handleReturnType(result, getTypeDescription(8, DATA_TYPE_DESCRIPTIONS)); });
 	}
 
 	/**
@@ -149,7 +149,7 @@ export default class Methods {
 		chatroomId: ArgumentTypes.AccountId,
 		__options ? : GasLimit,
 	): Promise< QueryReturnType< Result<null, ReturnTypes.LangError> > >{
-		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "checkTimeout", [chatroomId], __options , (result) => { return handleReturnType(result, getTypeDescription(9, DATA_TYPE_DESCRIPTIONS)); });
+		return queryOkJSON( this.__apiPromise, this.__nativeContract, this.__callerAddress, "checkTimeout", [chatroomId], __options , (result) => { return handleReturnType(result, getTypeDescription(8, DATA_TYPE_DESCRIPTIONS)); });
 	}
 
 }
\ No newline at end of file
diff --git a/contracts/typed-contracts/types-arguments/chatroom.ts b/contracts/typed-contracts/types-arguments/chatroom.ts
index 0605fff..d1a232a 100644
--- a/contracts/typed-contracts/types-arguments/chatroom.ts
+++ b/contracts/typed-contracts/types-arguments/chatroom.ts
@@ -14,7 +14,6 @@ export enum LangError {
 
 export type Room = {
 	owner: AccountId,
-	messages: Array<string>,
 	timeout: (number | string | BN)
 }
 
diff --git a/contracts/typed-contracts/types-returns/chatroom.ts b/contracts/typed-contracts/types-returns/chatroom.ts
index d94942f..3045a60 100644
--- a/contracts/typed-contracts/types-returns/chatroom.ts
+++ b/contracts/typed-contracts/types-returns/chatroom.ts
@@ -15,7 +15,6 @@ export enum LangError {
 
 export type Room = {
 	owner: AccountId,
-	messages: Array<string>,
 	timeout: number
 }
 
diff --git a/frontend/src/components/web3/chat-messages.tsx b/frontend/src/components/web3/chat-messages.tsx
index 66bfe36..38fdeef 100644
--- a/frontend/src/components/web3/chat-messages.tsx
+++ b/frontend/src/components/web3/chat-messages.tsx
@@ -14,7 +14,6 @@ import { Message } from './message'
 import { SendMessage } from './send-message'
 
 export const ChatMessages: FC = () => {
-  const { activeChain } = useInkathon()
   const { isChatroomLoading, isChatroomActive, messages, chatroomId, isMessagesLoading } =
     useContext(AppContext)
 
diff --git a/frontend/src/components/web3/message.tsx b/frontend/src/components/web3/message.tsx
index 7857d18..48f0108 100644
--- a/frontend/src/components/web3/message.tsx
+++ b/frontend/src/components/web3/message.tsx
@@ -9,9 +9,8 @@ export const Message = ({ message }: { message: MessageProps }) => {
   return (
     <>
       <div className="mb-4 flex w-fit grow flex-col rounded-md border bg-border px-3 py-1">
-        {/* @ts-expect-error the data isn't in an object */}
-        <div className="mb-0.5 text-sm text-muted-foreground">{message}</div>
-        {sender && <div className="text-xs text-black">{sender}</div>}
+        <div className="mb-0.5 text-sm text-foreground">{content}</div>
+        {sender && <div className="text-xs text-muted-foreground">@{sender.slice(0, 5)}</div>}
       </div>
     </>
   )
diff --git a/frontend/src/context/app-context.tsx b/frontend/src/context/app-context.tsx
index c13aeff..c3b50a0 100644
--- a/frontend/src/context/app-context.tsx
+++ b/frontend/src/context/app-context.tsx
@@ -60,7 +60,7 @@ export function AppProvider({ children }: { children: React.ReactNode }) {
 
   // web3 state
   const { api, activeAccount, activeSigner } = useInkathon()
-  const { contract, address: contractAddress } = useRegisteredContract(ContractIds.Chatroom)
+  const { contract } = useRegisteredContract(ContractIds.Chatroom)
 
   // set app as loaded
   useEffect(() => {
@@ -70,10 +70,9 @@ export function AppProvider({ children }: { children: React.ReactNode }) {
         const room = await queryChatroom(activeAccount.address)
         // check if room object is not empty
         if (!(Object.keys(room).length === 0 && room.constructor === Object)) {
-          console.log('room', room)
           setIsChatroomActive(true)
           setChatroomId(activeAccount.address)
-          setMessages(room.messages)
+          await getMessages(activeAccount.address)
         } else {
           // you haven't created a chatroom, so join one if you've been invited
           setIsChatroomActive(false)
@@ -101,7 +100,6 @@ export function AppProvider({ children }: { children: React.ReactNode }) {
       ])
       const { output, isError, decodedOutput } = decodeOutput(result, contract, 'getChatroom')
       if (isError) throw new Error(decodedOutput)
-      console.log('out', output, decodedOutput)
       if (!(Object.keys(output).length === 0 && output.constructor === Object)) {
         // TODO change contract to output None and check for null here
         return output
@@ -112,46 +110,8 @@ export function AppProvider({ children }: { children: React.ReactNode }) {
     }
     return {}
   }
-
-  // fetch chatroom
-  const fetchChatroom = async () => {
-    if (!activeAccount || !contract || !activeSigner || !api) {
-      toast.error('Wallet not connected. Try again… chatroom')
-      return
-    }
-
-    setIsChatroomLoading(true)
-
-    try {
-      console.log('chatroomId in fetchchatroom', chatroomId)
-      const result = await contractQuery(api, activeAccount.address, contract, 'getChatroom', {}, [
-        chatroomId,
-      ])
-      const { output, isError, decodedOutput } = decodeOutput(result, contract, 'getChatroom')
-      if (isError) throw new Error(decodedOutput)
-      console.log('in fetchChatroom. output:', output)
-      if (!(Object.keys(output).length === 0 && output.constructor === Object)) {
-        // TODO change contract to output None and check for null here
-        setIsChatroomActive(true)
-        getMessages()
-      }
-    } catch (e) {
-      console.error(e)
-      toast.error('Error while loading chatroom. Try again…')
-      setIsChatroomLoading(false)
-    } finally {
-      setIsChatroomLoading(false)
-    }
-  }
-
-  // useEffect(() => {
-  //   if (chatroomId) {
-  //     fetchChatroom()
-  //   }
-  // }, [isAppLoading])
-
   // Fetch messages
-  const getMessages = async () => {
+  const getMessages = async (_chatroomId: string) => {
     if (!activeAccount || !contract || !activeSigner || !api) {
       toast.error('Wallet not connected. Try again… mesasges')
       return
@@ -161,11 +121,10 @@ export function AppProvider({ children }: { children: React.ReactNode }) {
 
     try {
       const result = await contractQuery(api, activeAccount.address, contract, 'getMessages', {}, [
-        chatroomId,
+        _chatroomId,
       ])
       const { output, isError, decodedOutput } = decodeOutput(result, contract, 'getMessages')
       if (isError) throw new Error(decodedOutput)
-      console.log('messages: ', output)
       setMessages(output)
     } catch (e) {
       console.error(e)
@@ -177,7 +136,7 @@ export function AppProvider({ children }: { children: React.ReactNode }) {
   }
 
   async function refreshMessages() {
-    await getMessages()
+    // await getMessages(chatroomId)
   }
 
   // send a message
@@ -192,7 +151,7 @@ export function AppProvider({ children }: { children: React.ReactNode }) {
         chatroomId,
         newMessage,
       ])
-      await getMessages()
+      await getMessages(chatroomId!)
     } catch (e) {
       console.error(e)
     } finally {
@@ -211,13 +170,11 @@ export function AppProvider({ children }: { children: React.ReactNode }) {
       //set chatroomid to the caller of the create function
       setChatroomId(activeAccount.address)
       //fetch messages
-      await getMessages()
+      await getMessages(activeAccount.address)
       //set active chat to true
       setIsChatroomActive(true)
     } catch (e) {
       console.error(e)
-    } finally {
-      // fetchMessages()
     }
   }
 
@@ -235,8 +192,6 @@ export function AppProvider({ children }: { children: React.ReactNode }) {
       ])
     } catch (e) {
       console.error(e)
-    } finally {
-      // fetchMessages()
     }
   }
 
@@ -246,9 +201,6 @@ export function AppProvider({ children }: { children: React.ReactNode }) {
       return
     }
 
-    // TODO include check that caller must be owner
-    console.log('invite', chatroomId, participants[0])
-
     try {
       await contractTxWithToast(api, activeAccount.address, contract, 'invite', {}, [
         chatroomId,
@@ -256,8 +208,6 @@ export function AppProvider({ children }: { children: React.ReactNode }) {
       ])
     } catch (e) {
       console.error(e)
-    } finally {
-      // fetchMessages()
     }
   }
 
@@ -270,12 +220,35 @@ export function AppProvider({ children }: { children: React.ReactNode }) {
       return
     }
 
-    //check if you've been invited
+    //check if you've been invited to the chatroom
+    try {
+      const result = await contractQuery(
+        api,
+        activeAccount.address,
+        contract,
+        'isAParticipant',
+        {},
+        [joinChatroomId, activeAccount.address],
+      )
+      const { output, isError, decodedOutput } = decodeOutput(result, contract, 'isAParticipant')
+      if (isError) {
+        toast.error('Something went wrong')
+        throw new Error(decodedOutput)
+      }
+      if (!output) {
+        toast.error("You haven't been invited to this chatroom")
+        setIsChatroomLoading(false)
+        setIsMessagesLoading(false)
+        return
+      }
+    } catch (e) {
+      console.error(e)
+      toast.error("Error we couldn't verify your invitation. Try again…")
+    }
 
     const room = await queryChatroom(joinChatroomId)
     // check if room object is not empty
     if (!(Object.keys(room).length === 0 && room.constructor === Object)) {
-      console.log('room', room)
       setIsChatroomActive(true)
       setChatroomId(joinChatroomId)
       setMessages(room.messages)