diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..d4847bd
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,23 @@
+# Private key of the deployer wallet (no 0x prefix)
+PRIVATE_KEY=your_private_key_here
+
+# RPC URLs — get these from Alchemy, Infura, Ankr, or the chain's public docs
+CALIBNET_RPC_URL=https://api.calibration.node.glif.io/rpc/v1
+FILECOIN_RPC_URL=https://api.node.glif.io/rpc/v1
+OP_SEPOLIA_RPC_URL=https://sepolia.optimism.io
+OP_MAINNET_RPC_URL=https://mainnet.optimism.io
+ARBITRUM_SEPOLIA_RPC_URL=https://sepolia-rollup.arbitrum.io/rpc
+CELO_ALFAJORES_RPC_URL=https://alfajores-forno.celo-testnet.org
+
+# Block explorer API keys for contract verification
+# Filecoin Calibration: https://calibration.filscan.io
+CALIBNET_VERIFY_KEY=your_filscan_api_key
+
+# Optimism (Etherscan): https://optimistic.etherscan.io/myapikey
+OP_VERIFY_KEY=your_optimism_etherscan_api_key
+
+# Arbitrum (Arbiscan): https://arbiscan.io/myapikey
+ARBITRUM_VERIFY_KEY=your_arbiscan_api_key
+
+# Celo (Celoscan): https://celoscan.io/myapikey
+CELO_VERIFY_KEY=your_celoscan_api_key
diff --git a/hardhat.config.js b/hardhat.config.js
index 7b68e08..c0d5537 100644
--- a/hardhat.config.js
+++ b/hardhat.config.js
@@ -1,42 +1,43 @@
 require("@nomicfoundation/hardhat-toolbox");
-require('dotenv').config()
+require('dotenv').config();
+
 /** @type import('hardhat/config').HardhatUserConfig */
 module.exports = {
   solidity: "0.8.20",
   networks: {
     "calibnet": {
-      url: process.env.RPC_URL,
-      accounts: [process.env.PRIVATE_KEY]
+      url: process.env.CALIBNET_RPC_URL || "",
+      accounts: process.env.PRIVATE_KEY ? [process.env.PRIVATE_KEY] : []
     },
     "filecoin": {
-      url: process.env.RPC_URL,
-      accounts: [process.env.PRIVATE_KEY]
+      url: process.env.FILECOIN_RPC_URL || "",
+      accounts: process.env.PRIVATE_KEY ? [process.env.PRIVATE_KEY] : []
     },
     "op-sepolia": {
-      url: process.env.RPC_URL,
-      accounts: [process.env.PRIVATE_KEY]
+      url: process.env.OP_SEPOLIA_RPC_URL || "",
+      accounts: process.env.PRIVATE_KEY ? [process.env.PRIVATE_KEY] : []
     },
     "op-mainnet": {
-      url: process.env.RPC_URL,
-      accounts: [process.env.PRIVATE_KEY]
+      url: process.env.OP_MAINNET_RPC_URL || "",
+      accounts: process.env.PRIVATE_KEY ? [process.env.PRIVATE_KEY] : []
     },
     "arbitrumSepolia": {
-      url: process.env.RPC_URL,
-      accounts: [process.env.PRIVATE_KEY]
+      url: process.env.ARBITRUM_SEPOLIA_RPC_URL || "",
+      accounts: process.env.PRIVATE_KEY ? [process.env.PRIVATE_KEY] : []
     },
     "celo-alfajores": {
-      url: process.env.RPC_URL,
-      accounts: [process.env.PRIVATE_KEY]
+      url: process.env.CELO_ALFAJORES_RPC_URL || "",
+      accounts: process.env.PRIVATE_KEY ? [process.env.PRIVATE_KEY] : []
     }
   },
   etherscan: {
     apiKey: {
-      "calibnet": process.env.VERIFY_KEY,
-      "op-sepolia": process.env.VERIFY_KEY,
-      "op-mainnet": process.env.VERIFY_KEY,
-      "optimism": process.env.VERIFY_KEY,
-      "arbitrumSepolia": process.env.VERIFY_KEY,
-      "celo-alfajores": process.env.VERIFY_KEY
+      "calibnet": process.env.CALIBNET_VERIFY_KEY || "",
+      "op-sepolia": process.env.OP_VERIFY_KEY || "",
+      "op-mainnet": process.env.OP_VERIFY_KEY || "",
+      "optimism": process.env.OP_VERIFY_KEY || "",
+      "arbitrumSepolia": process.env.ARBITRUM_VERIFY_KEY || "",
+      "celo-alfajores": process.env.CELO_VERIFY_KEY || ""
     },
     customChains: [
       {
@@ -75,9 +76,9 @@ module.exports = {
         network: "celo-alfajores",
         chainId: 44787,
         urls: {
-            apiURL: "https://api-alfajores.celoscan.io/api",
-            browserURL: "https://alfajores.celoscan.io",
-        },
+          apiURL: "https://api-alfajores.celoscan.io/api",
+          browserURL: "https://alfajores.celoscan.io"
+        }
       },
       {
         network: "op-mainnet",
@@ -89,4 +90,4 @@ module.exports = {
       }
     ]
   }
-};
\ No newline at end of file
+};
diff --git a/scripts/deploy.js b/scripts/deploy.js
index feff66b..02dfd1c 100644
--- a/scripts/deploy.js
+++ b/scripts/deploy.js
@@ -1,39 +1,54 @@
-const hre = require('hardhat')
+const hre = require('hardhat');
 
-async function main(){
+async function main() {
+  const network = hre.network.name;
+  console.log(`\nDeploying to network: ${network}`);
 
-  // const contract = await hre.ethers.deployContract("PPTToken",[200_000_000])
-  // await contract.waitForDeployment();
+  // Step 1: Deploy PPTToken
+  const initialSupply = 200_000_000;
+  const pptToken = await hre.ethers.deployContract("PPTToken", [initialSupply]);
+  await pptToken.waitForDeployment();
+  console.log(`PPTToken deployed at: ${pptToken.target}`);
 
-  // console.log("Contract deployed at : ",contract.target);
-
-  // console.log("Waiting 30 seconds before verification...")
-  // await new Promise(resolve => setTimeout(resolve, 30000));
-  
-  // await hre.run("verify:verify",{
-  //   address : contract.target,
-  //   constructorArguments : [200_000_000]
-  // })
-
-  const invoiceContract = await hre.ethers.deployContract("MedInvoiceContract",["0xC00BBC9A2C88712dC1e094866973F036373C7134"])
+  // Step 2: Deploy MedInvoiceContract using PPTToken address
+  const invoiceContract = await hre.ethers.deployContract("MedInvoiceContract", [pptToken.target]);
   await invoiceContract.waitForDeployment();
-
-  console.log("Contract deployed at : ",invoiceContract.target);
-
-  console.log("Waiting 30 seconds before verification...")
-  await new Promise(resolve => setTimeout(resolve, 30000));
-  
-  // await hre.run("verify:verify",{
-  //   address : invoiceContract.target,
-  //   constructorArguments : [contract.target]
-  // })
-
+  console.log(`MedInvoiceContract deployed at: ${invoiceContract.target}`);
+
+  // Step 3: Verify contracts on block explorer (skip for local hardhat network)
+  if (network !== "hardhat" && network !== "localhost") {
+    console.log("\nWaiting 30 seconds before verification...");
+    await new Promise(resolve => setTimeout(resolve, 30000));
+
+    try {
+      await hre.run("verify:verify", {
+        address: pptToken.target,
+        constructorArguments: [initialSupply]
+      });
+      console.log("PPTToken verified.");
+    } catch (e) {
+      console.warn("PPTToken verification failed:", e.message);
+    }
+
+    try {
+      await hre.run("verify:verify", {
+        address: invoiceContract.target,
+        constructorArguments: [pptToken.target]
+      });
+      console.log("MedInvoiceContract verified.");
+    } catch (e) {
+      console.warn("MedInvoiceContract verification failed:", e.message);
+    }
+  }
+
+  console.log("\nDeployment complete.");
+  console.log(`  PPTToken:          ${pptToken.target}`);
+  console.log(`  MedInvoiceContract: ${invoiceContract.target}`);
 }
 
-
 main()
-.then(()=>{process.exit(0)})
-.catch((error)=>{
-  console.log(error);
-  process.exit(1);
-})
\ No newline at end of file
+  .then(() => { process.exit(0); })
+  .catch((error) => {
+    console.error(error);
+    process.exit(1);
+  });