diff --git a/hardhat.config.ts b/hardhat.config.ts
index f0cecf1f..0fc2d8cc 100644
--- a/hardhat.config.ts
+++ b/hardhat.config.ts
@@ -14,6 +14,8 @@ const {
     ETHERSCAN_API_KEY,
     SEPOLIA_URL,
     POLYGON_AMOY_URL,
+    ARBITRUM_SEPOLIA_URL,
+    ETHEREUM_SEPOLIA_URL
 } = process.env;
 
 export const config = {
@@ -46,12 +48,16 @@ export const config = {
             accounts: PRIVATE_KEY ? [`0x${PRIVATE_KEY}`] : [],
             gasPrice: 22000000000,
         },
-
-        // arbitrumSepolia: {
-        //     url: ARBITRUM_SEPOLIA_URL || "",
-        //     accounts: PRIVATE_KEY ? [`0x${PRIVATE_KEY}`] : [],
-        //     gasPrice: 22000000000,
-        // },
+        "arbitrum-sepolia": {
+            url: ARBITRUM_SEPOLIA_URL || "",
+            accounts: PRIVATE_KEY ? [`0x${PRIVATE_KEY}`] : [],
+            gasPrice: 22000000000,
+        },
+        "ethereum-sepolia": {
+            url: ETHEREUM_SEPOLIA_URL || "",
+            accounts: PRIVATE_KEY ? [`0x${PRIVATE_KEY}`] : [],
+            gasPrice: 22000000000,
+        },
     },
     solidity: {
         compilers: [
diff --git a/package.json b/package.json
index 452ce969..9c2cffef 100644
--- a/package.json
+++ b/package.json
@@ -24,5 +24,8 @@
   "dependencies": {
     "@rainprotocol/rain-protocol": "git://github.com/rainprotocol/rain-protocol.git#33275a8c9ef751c3d1187dc9a66b37d77aca6848",
     "solc": "=0.8.17"
+  },
+  "scripts": {
+    "certify-arb-sepolia": "npx hardhat run scripts/certify.ts --network arbitrum-sepolia"
   }
 }
diff --git a/scripts/certify.ts b/scripts/certify.ts
new file mode 100644
index 00000000..bedf4e35
--- /dev/null
+++ b/scripts/certify.ts
@@ -0,0 +1,71 @@
+import { artifacts, ethers } from "hardhat";
+import * as dotenv from "dotenv";
+import { getEventArgs } from "../test/util";
+import { Contract } from "ethers";
+import type { OffchainAssetReceiptVault } from "../typechain-types";
+
+dotenv.config();
+
+async function main() {
+  const { PRIVATE_KEY, CONTRACT_FACTORY_ADDRESS } = process.env;
+
+  if ( !PRIVATE_KEY || !CONTRACT_FACTORY_ADDRESS) {
+    throw new Error("Please set PRIVATE_KEY and CONTRACT_FACTORY_ADDRESS in your .env file");
+  }
+
+  // const provider = new ethers.providers.JsonRpcProvider(ETHEREUM_SEPOLIA_URL);
+  const wallet = new ethers.Wallet(PRIVATE_KEY, ethers.provider);
+
+  const contractFactoryAbi = ( await artifacts.readArtifact("OffchainAssetReceiptVaultFactory") ).abi;
+
+  const contractFactory = new ethers.Contract(CONTRACT_FACTORY_ADDRESS, contractFactoryAbi, wallet);
+
+  const constructionConfig = {
+    admin: wallet.address,
+    vaultConfig: {
+      asset: ethers.constants.AddressZero,
+      name: `OffchainAssetVaul-${ new Date().getTime() }`,
+      symbol: "OAV"
+    }
+  };
+
+  let tx = await contractFactory.connect(wallet).createChildTyped(
+    constructionConfig
+  );
+
+  const { child } = await getEventArgs(
+    tx,
+    "NewChild",
+    contractFactory
+  );
+
+  let contract = new Contract(
+    child,
+    ( await artifacts.readArtifact("OffchainAssetReceiptVault") ).abi
+  ) as OffchainAssetReceiptVault;
+
+  try {
+    const blockNum = await ethers.provider.getBlockNumber();
+    const block = await ethers.provider.getBlock(blockNum);
+    const _certifiedUntil = block.timestamp + 100;
+
+    // Grant role and wait for the transaction to be mined
+    const grantRoleTx = await contract.connect(wallet).grantRole(await contract.connect(wallet).CERTIFIER(), wallet.address);
+    await grantRoleTx.wait();
+
+    // Call certify function
+    const certifyTx = await contract.connect(wallet).certify(_certifiedUntil, blockNum, false, []);
+    console.log("Transaction sent:", certifyTx.hash);
+
+    // Wait for the transaction to be mined
+    const receipt = await certifyTx.wait();
+    console.log("Transaction mined:", receipt);
+  } catch (error) {
+    console.error("Error occurred:", error);
+  }
+}
+
+main().catch((error) => {
+  console.error(error);
+  process.exitCode = 1;
+});
\ No newline at end of file