diff --git a/helios-ts/lib.ts b/helios-ts/lib.ts
index ca5ac54b..79ec7a6f 100644
--- a/helios-ts/lib.ts
+++ b/helios-ts/lib.ts
@@ -102,34 +102,41 @@ export class HeliosProvider {
         return this.#client.send_raw_transaction(req.params[0]);
       }
       case "eth_getTransactionReceipt": {
-        return this.#client.get_transaction_receipt(req.params[0]);
-      }
-      case "eth_getTransactionByHash": {
-        return this.#client.get_transaction_by_hash(req.params[0]);
+        const receipt = await this.#client.get_transaction_receipt(req.params[0]);
+        return mapToObj(receipt);
       }
       case "eth_getTransactionByBlockHashAndIndex": {
-        return this.#client.get_transaction_by_block_hash_and_index(
+        const tx = await this.#client.get_transaction_by_block_hash_and_index(
           req.params[0],
           req.params[1]
         );
+        return mapToObj(tx);
       }
       case "eth_getTransactionByBlockNumberAndIndex": {
-        return this.#client.get_transaction_by_block_number_and_index(
+        const tx = await this.#client.get_transaction_by_block_number_and_index(
           req.params[0],
           req.params[1]
         );
+        return mapToObj(tx);
       }
       case "eth_getBlockReceipts": {
-        return this.#client.get_block_receipts(req.params[0]);
+        const receipts = await this.#client.get_block_receipts(req.params[0]);
+        return receipts.map(mapToObj);
       }
       case "eth_getLogs": {
-        return this.#client.get_logs(req.params[0]);
+        const logs = await this.#client.get_logs(req.params[0]);
+        return logs.map(mapToObj);
       }
       case "eth_getFilterChanges": {
-        return this.#client.get_filter_changes(req.params[0]);
+        const changes = await this.#client.get_filter_changes(req.params[0]);
+        if (changes.length > 0 && typeof changes[0] === "object") {
+          return changes.map(mapToObj);
+        }
+        return changes;
       }
       case "eth_getFilterLogs": {
-        return this.#client.get_filter_logs(req.params[0]);
+        const logs = await this.#client.get_filter_logs(req.params[0]);
+        return logs.map(mapToObj);
       }
       case "eth_uninstallFilter": {
         return this.#client.uninstall_filter(req.params[0]);
@@ -150,6 +157,10 @@ export class HeliosProvider {
         const block = await this.#client.get_block_by_number(req.params[0], req.params[1]);
         return mapToObj(block);
       }
+      case "eth_getBlockByHash": {
+        const block = await this.#client.get_block_by_hash(req.params[0], req.params[1]);
+        return mapToObj(block);
+      }
       case "web3_clientVersion": {
         return this.#client.client_version();
       }
diff --git a/helios-ts/src/ethereum.rs b/helios-ts/src/ethereum.rs
index c108886c..7286112f 100644
--- a/helios-ts/src/ethereum.rs
+++ b/helios-ts/src/ethereum.rs
@@ -219,6 +219,13 @@ impl EthereumClient {
         Ok(serde_wasm_bindgen::to_value(&block)?)
     }
 
+    #[wasm_bindgen]
+    pub async fn get_block_by_hash(&self, hash: String, full_tx: bool) -> Result<JsValue, JsError> {
+        let hash = B256::from_str(&hash)?;
+        let block = map_err(self.inner.get_block_by_hash(hash, full_tx).await)?;
+        Ok(serde_wasm_bindgen::to_value(&block)?)
+    }
+
     #[wasm_bindgen]
     pub async fn get_code(&self, addr: JsValue, block: JsValue) -> Result<String, JsError> {
         let addr: Address = serde_wasm_bindgen::from_value(addr)?;
diff --git a/helios-ts/src/opstack.rs b/helios-ts/src/opstack.rs
index a4029c29..979df3ad 100644
--- a/helios-ts/src/opstack.rs
+++ b/helios-ts/src/opstack.rs
@@ -167,6 +167,13 @@ impl OpStackClient {
         Ok(serde_wasm_bindgen::to_value(&block)?)
     }
 
+    #[wasm_bindgen]
+    pub async fn get_block_by_hash(&self, hash: String, full_tx: bool) -> Result<JsValue, JsError> {
+        let hash = B256::from_str(&hash)?;
+        let block = map_err(self.inner.get_block_by_hash(hash, full_tx).await)?;
+        Ok(serde_wasm_bindgen::to_value(&block)?)
+    }
+
     #[wasm_bindgen]
     pub async fn get_code(&self, addr: JsValue, block: JsValue) -> Result<String, JsError> {
         let addr: Address = serde_wasm_bindgen::from_value(addr)?;