diff --git a/crates/pathfinder/resources/contracts/core_impl.json b/crates/pathfinder/resources/contracts/core_impl.json
index 4e3f034a0e..86badfa50c 100644
--- a/crates/pathfinder/resources/contracts/core_impl.json
+++ b/crates/pathfinder/resources/contracts/core_impl.json
@@ -5,13 +5,13 @@
             {
                 "indexed": true,
                 "internalType": "uint256",
-                "name": "from_address",
+                "name": "fromAddress",
                 "type": "uint256"
             },
             {
                 "indexed": true,
                 "internalType": "address",
-                "name": "to_address",
+                "name": "toAddress",
                 "type": "address"
             },
             {
@@ -30,13 +30,13 @@
             {
                 "indexed": true,
                 "internalType": "address",
-                "name": "from_address",
+                "name": "fromAddress",
                 "type": "address"
             },
             {
                 "indexed": true,
                 "internalType": "uint256",
-                "name": "to_address",
+                "name": "toAddress",
                 "type": "uint256"
             },
             {
@@ -67,13 +67,13 @@
             {
                 "indexed": true,
                 "internalType": "uint256",
-                "name": "from_address",
+                "name": "fromAddress",
                 "type": "uint256"
             },
             {
                 "indexed": true,
                 "internalType": "address",
-                "name": "to_address",
+                "name": "toAddress",
                 "type": "address"
             },
             {
@@ -92,13 +92,13 @@
             {
                 "indexed": true,
                 "internalType": "address",
-                "name": "from_address",
+                "name": "fromAddress",
                 "type": "address"
             },
             {
                 "indexed": true,
                 "internalType": "uint256",
-                "name": "to_address",
+                "name": "toAddress",
                 "type": "uint256"
             },
             {
@@ -226,11 +226,126 @@
         "name": "LogStateUpdate",
         "type": "event"
     },
+    {
+        "anonymous": false,
+        "inputs": [
+            {
+                "indexed": true,
+                "internalType": "address",
+                "name": "fromAddress",
+                "type": "address"
+            },
+            {
+                "indexed": true,
+                "internalType": "uint256",
+                "name": "toAddress",
+                "type": "uint256"
+            },
+            {
+                "indexed": true,
+                "internalType": "uint256",
+                "name": "selector",
+                "type": "uint256"
+            },
+            {
+                "indexed": false,
+                "internalType": "uint256[]",
+                "name": "payload",
+                "type": "uint256[]"
+            },
+            {
+                "indexed": false,
+                "internalType": "uint256",
+                "name": "nonce",
+                "type": "uint256"
+            }
+        ],
+        "name": "MessageToL2Canceled",
+        "type": "event"
+    },
+    {
+        "anonymous": false,
+        "inputs": [
+            {
+                "indexed": true,
+                "internalType": "address",
+                "name": "fromAddress",
+                "type": "address"
+            },
+            {
+                "indexed": true,
+                "internalType": "uint256",
+                "name": "toAddress",
+                "type": "uint256"
+            },
+            {
+                "indexed": true,
+                "internalType": "uint256",
+                "name": "selector",
+                "type": "uint256"
+            },
+            {
+                "indexed": false,
+                "internalType": "uint256[]",
+                "name": "payload",
+                "type": "uint256[]"
+            },
+            {
+                "indexed": false,
+                "internalType": "uint256",
+                "name": "nonce",
+                "type": "uint256"
+            }
+        ],
+        "name": "MessageToL2CancellationStarted",
+        "type": "event"
+    },
+    {
+        "inputs": [
+            {
+                "internalType": "uint256",
+                "name": "toAddress",
+                "type": "uint256"
+            },
+            {
+                "internalType": "uint256",
+                "name": "selector",
+                "type": "uint256"
+            },
+            {
+                "internalType": "uint256[]",
+                "name": "payload",
+                "type": "uint256[]"
+            },
+            {
+                "internalType": "uint256",
+                "name": "nonce",
+                "type": "uint256"
+            }
+        ],
+        "name": "cancelL1ToL2Message",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+    },
+    {
+        "inputs": [],
+        "name": "configHash",
+        "outputs": [
+            {
+                "internalType": "uint256",
+                "name": "",
+                "type": "uint256"
+            }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+    },
     {
         "inputs": [
             {
                 "internalType": "uint256",
-                "name": "from_address",
+                "name": "fromAddress",
                 "type": "uint256"
             },
             {
@@ -328,6 +443,25 @@
         "stateMutability": "view",
         "type": "function"
     },
+    {
+        "inputs": [
+            {
+                "internalType": "bytes32",
+                "name": "msgHash",
+                "type": "bytes32"
+            }
+        ],
+        "name": "l1ToL2MessageCancellations",
+        "outputs": [
+            {
+                "internalType": "uint256",
+                "name": "",
+                "type": "uint256"
+            }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+    },
     {
         "inputs": [],
         "name": "l1ToL2MessageNonce",
@@ -379,6 +513,19 @@
         "stateMutability": "view",
         "type": "function"
     },
+    {
+        "inputs": [],
+        "name": "messageCancellationDelay",
+        "outputs": [
+            {
+                "internalType": "uint256",
+                "name": "",
+                "type": "uint256"
+            }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+    },
     {
         "inputs": [],
         "name": "programHash",
@@ -409,7 +556,7 @@
         "inputs": [
             {
                 "internalType": "uint256",
-                "name": "to_address",
+                "name": "toAddress",
                 "type": "uint256"
             },
             {
@@ -434,6 +581,32 @@
         "stateMutability": "nonpayable",
         "type": "function"
     },
+    {
+        "inputs": [
+            {
+                "internalType": "uint256",
+                "name": "newConfigHash",
+                "type": "uint256"
+            }
+        ],
+        "name": "setConfigHash",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+    },
+    {
+        "inputs": [
+            {
+                "internalType": "uint256",
+                "name": "delayInSeconds",
+                "type": "uint256"
+            }
+        ],
+        "name": "setMessageCancellationDelay",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+    },
     {
         "inputs": [
             {
@@ -506,6 +679,34 @@
         "stateMutability": "nonpayable",
         "type": "function"
     },
+    {
+        "inputs": [
+            {
+                "internalType": "uint256",
+                "name": "toAddress",
+                "type": "uint256"
+            },
+            {
+                "internalType": "uint256",
+                "name": "selector",
+                "type": "uint256"
+            },
+            {
+                "internalType": "uint256[]",
+                "name": "payload",
+                "type": "uint256[]"
+            },
+            {
+                "internalType": "uint256",
+                "name": "nonce",
+                "type": "uint256"
+            }
+        ],
+        "name": "startL1ToL2MessageCancellation",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+    },
     {
         "inputs": [],
         "name": "stateBlockNumber",