diff --git a/contracts/hardhat.config.js b/contracts/hardhat.config.js
index de65c7f..44818bf 100644
--- a/contracts/hardhat.config.js
+++ b/contracts/hardhat.config.js
@@ -84,7 +84,7 @@ module.exports = {
     apiKey: {
       chiado: process.env.GNOSIS_API_KEY,
       xdai: process.env.GNOSIS_API_KEY,
-      mainnent: process.env.ETHERSCAN_API_KEY,
+      mainnet: process.env.ETHERSCAN_API_KEY,
       sepolia: process.env.ETHERSCAN_API_KEY,
     },
   },
diff --git a/contracts/src/RealitioForeignArbitrationProxy.sol b/contracts/src/RealitioForeignArbitrationProxy.sol
index a6051b9..1717822 100644
--- a/contracts/src/RealitioForeignArbitrationProxy.sol
+++ b/contracts/src/RealitioForeignArbitrationProxy.sol
@@ -69,6 +69,7 @@ contract RealitioForeignArbitrationProxy is IForeignArbitrationProxy {
 
     /// @dev Whether a dispute has already been created for the given question ID or not. questionIDToDisputeExists[questionID]
     mapping(bytes32 => bool) public questionIDToDisputeExists;
+    mapping(uint256 => uint256) public arbitrationCreatedBlock; // Block of dispute creation. arbitrationCreatedBlock[disputeID]
 
     modifier onlyArbitrator() {
         require(msg.sender == address(arbitrator), "Only arbitrator allowed");
@@ -159,6 +160,7 @@ contract RealitioForeignArbitrationProxy is IForeignArbitrationProxy {
                 disputeDetails.requester = _requester;
 
                 questionIDToDisputeExists[_questionID] = true;
+                arbitrationCreatedBlock[disputeID] = block.number;
 
                 // At this point, arbitration.deposit is guaranteed to be greater than or equal to the arbitration cost.
                 uint256 remainder = arbitration.deposit - arbitrationCost;