diff --git a/_data/chains/eip155-1000.json b/_data/chains/eip155-1000.json
new file mode 100644
index 00000000..14cca410
--- /dev/null
+++ b/_data/chains/eip155-1000.json
@@ -0,0 +1,28 @@
+{
+  "name": "GTON Mainnet",
+  "chain": "GTON",
+  "rpc": [
+    "https://rpc.gton.network/"
+  ],
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "GCD",
+    "symbol": "GCD",
+    "decimals": 18
+  },
+  "infoURL": "https://gton.capital",
+  "shortName": "gton",
+  "chainId": 1000,
+  "networkId": 1000,
+  "explorers": [
+    {
+        "name": "GTON Network Explorer",
+        "url": "https://explorer.gton.network",
+        "standard": "EIP3091"
+    }
+  ],
+  "parent": {
+    "type": "L2",
+    "chain": "eip155-1"
+  }
+}
diff --git a/_data/chains/eip155-50021.json b/_data/chains/eip155-50021.json
new file mode 100644
index 00000000..47a48a4e
--- /dev/null
+++ b/_data/chains/eip155-50021.json
@@ -0,0 +1,28 @@
+{
+  "name": "GTON Testnet",
+  "chain": "GTON Testnet",
+  "rpc": [
+    "https://testnet.gton.network/"
+  ],
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "GCD",
+    "symbol": "GCD",
+    "decimals": 18
+  },
+  "infoURL": "https://gton.capital",
+  "shortName": "tgton",
+  "chainId": 50021,
+  "networkId": 50021,
+  "explorers": [
+    {
+        "name": "GTON Testnet Network Explorer",
+        "url": "https://explorer.testnet.gton.network",
+        "standard": "EIP3091"
+    }
+  ],
+  "parent": {
+    "type": "L2",
+    "chain": "eip155-3"
+  }
+}