diff --git a/hardhat.config.ts b/hardhat.config.ts
index 956329d..6d39baa 100644
--- a/hardhat.config.ts
+++ b/hardhat.config.ts
@@ -79,6 +79,13 @@ const config: HardhatUserConfig = {
             accounts: [process.env.PRIVATE_KEY!],
             saveDeployments: true,
             zksync: false
+        },
+        baseTestnet: {
+            chainId: 84532,
+            url: 'https://sepolia.base.org',
+            accounts: [process.env.PRIVATE_KEY!],
+            saveDeployments: true,
+            zksync: false
         }
     },
     etherscan: {
@@ -91,7 +98,8 @@ const config: HardhatUserConfig = {
             sepolia: process.env.ETHERSCAN_KEY!,
             mainnet: process.env.ETHERSCAN_KEY!,
             zetachainTestnet: process.env.ZETASCAN_API_KEY!,
-            zetachain: process.env.ZETASCAN_API_KEY!
+            zetachain: process.env.ZETASCAN_API_KEY!,
+            baseTestnet: process.env.BASE_SEPOLIA_API_KEY!
         },
         customChains: [
             {
@@ -109,6 +117,14 @@ const config: HardhatUserConfig = {
                     apiURL: 'https://zetachain.blockscout.com/api',
                     browserURL: 'https://zetachain.blockscout.com/'
                 }
+            },
+            {
+                network: 'baseTestnet',
+                chainId: 84532,
+                urls: {
+                    apiURL: 'https://api-sepolia.basescan.org/api',
+                    browserURL: 'https://sepolia.basescan.org'
+                }
             }
         ]
     },
diff --git a/src/ActuallyMetIRL.sol b/src/ActuallyMetIRL.sol
index e9609bc..26e918a 100644
--- a/src/ActuallyMetIRL.sol
+++ b/src/ActuallyMetIRL.sol
@@ -16,7 +16,7 @@ contract ActuallyMetIRL is Ownable {
 
     error ConfirmationAddressMismatch();
 
-    event DidMetIRL(address partyA, address partyB, uint64 attestationId);
+    event DidMeetIRL(address partyA, address partyB, uint64 attestationId);
 
     constructor() Ownable(_msgSender()) { }
 
@@ -32,7 +32,7 @@ contract ActuallyMetIRL is Ownable {
         metIRLMapping[_msgSender()] = partyB;
     }
 
-    function confirmMetIRL(address partyA) external returns (uint64) {
+    function confirmMetIRL(address partyA, bytes memory data) external returns (uint64) {
         address partyB = _msgSender();
         if (metIRLMapping[partyA] == partyB) {
             // B has confirm A's claim of having met them IRL
@@ -50,10 +50,10 @@ contract ActuallyMetIRL is Ownable {
                 dataLocation: DataLocation.ONCHAIN,
                 revoked: false,
                 recipients: recipients,
-                data: ""
-            });
+                data: data // SignScan assumes this is from `abi.encode(...)`
+             });
             uint64 attestationId = spInstance.attest(a, "", "", "");
-            emit DidMetIRL(partyA, partyB, attestationId);
+            emit DidMeetIRL(partyA, partyB, attestationId);
             return attestationId;
         } else {
             revert ConfirmationAddressMismatch();