diff --git a/_data/chains/eip155-361.json b/_data/chains/eip155-361.json
new file mode 100644
index 00000000..b510023e
--- /dev/null
+++ b/_data/chains/eip155-361.json
@@ -0,0 +1,19 @@
+{
+  "name": "Theta Mainnet",
+  "chain": "Theta",
+  "network": "mainnet",
+  "rpc": [
+    "https://eth-rpc-api.thetatoken.org"
+  ],
+  "faucets": [
+  ],
+  "nativeCurrency": {
+    "name": "Theta Fuel",
+    "symbol": "TFUEL",
+    "decimals": 18
+  },
+  "infoURL": "https://www.thetatoken.org/",
+  "shortName": "theta-mainnet",
+  "chainId": 361,
+  "networkId": 361
+}
diff --git a/_data/chains/eip155-363.json b/_data/chains/eip155-363.json
new file mode 100644
index 00000000..5831ff0f
--- /dev/null
+++ b/_data/chains/eip155-363.json
@@ -0,0 +1,19 @@
+{
+  "name": "Theta Sapphire Testnet",
+  "chain": "Theta",
+  "network": "testnet_sapphire",
+  "rpc": [
+    "https://eth-rpc-api-sapphire.thetatoken.org"
+  ],
+  "faucets": [
+  ],
+  "nativeCurrency": {
+    "name": "Theta Fuel",
+    "symbol": "TFUEL",
+    "decimals": 18
+  },
+  "infoURL": "https://www.thetatoken.org/",
+  "shortName": "theta-sapphire",
+  "chainId": 363,
+  "networkId": 363
+}
diff --git a/_data/chains/eip155-364.json b/_data/chains/eip155-364.json
new file mode 100644
index 00000000..73be3583
--- /dev/null
+++ b/_data/chains/eip155-364.json
@@ -0,0 +1,19 @@
+{
+  "name": "Theta Amber Testnet",
+  "chain": "Theta",
+  "network": "testnet_amber",
+  "rpc": [
+    "https://eth-rpc-api-amber.thetatoken.org"
+  ],
+  "faucets": [
+  ],
+  "nativeCurrency": {
+    "name": "Theta Fuel",
+    "symbol": "TFUEL",
+    "decimals": 18
+  },
+  "infoURL": "https://www.thetatoken.org/",
+  "shortName": "theta-amber",
+  "chainId": 364,
+  "networkId": 364
+}
\ No newline at end of file
diff --git a/_data/chains/eip155-365.json b/_data/chains/eip155-365.json
new file mode 100644
index 00000000..7870057c
--- /dev/null
+++ b/_data/chains/eip155-365.json
@@ -0,0 +1,19 @@
+{
+  "name": "Theta Testnet",
+  "chain": "Theta",
+  "network": "testnet",
+  "rpc": [
+    "https://eth-rpc-api-testnet.thetatoken.org"
+  ],
+  "faucets": [
+  ],
+  "nativeCurrency": {
+    "name": "Theta Fuel",
+    "symbol": "TFUEL",
+    "decimals": 18
+  },
+  "infoURL": "https://www.thetatoken.org/",
+  "shortName": "theta-testnet",
+  "chainId": 365,
+  "networkId": 365
+}