diff --git a/frontend/src/services/wallet.js b/frontend/src/services/wallet.js
index 0f99f41..7bd933e 100644
--- a/frontend/src/services/wallet.js
+++ b/frontend/src/services/wallet.js
@@ -80,7 +80,7 @@ export async function connectWithWallet() {
     console.log('Requesting signature...');
     const signature = await window.ethereum.request({
       method: 'personal_sign',
-      params: [message, address],
+      params: [message, address.toLowerCase()],
     });
 
     console.log('Got signature:', signature);
diff --git a/frontend/src/utils/wallet.js b/frontend/src/utils/wallet.js
index e0fc2e3..0a0bce7 100644
--- a/frontend/src/utils/wallet.js
+++ b/frontend/src/utils/wallet.js
@@ -104,6 +104,7 @@ export const connectWallet = async () => {
       address: normalizedAddress,
       signature,
       nonce,
+      issuedAt: new Date().toISOString(),
     };
     console.log('Request data:', requestData);