diff --git a/_data/chains/eip155-1819.json b/_data/chains/eip155-1819.json
new file mode 100644
index 00000000..d5166f02
--- /dev/null
+++ b/_data/chains/eip155-1819.json
@@ -0,0 +1,30 @@
+{
+  "name": "Cube Chain Testnet",
+  "chain": "Cube",
+  "rpc": [
+    "https://http-testnet.cube.network",
+    "wss://ws-testnet.cube.network",
+    "https://http-testnet-sg.cube.network",
+    "wss://ws-testnet-sg.cube.network",
+    "https://http-testnet-jp.cube.network",
+    "wss://ws-testnet-jp.cube.network",
+    "https://http-testnet-us.cube.network",
+    "wss://ws-testnet-us.cube.network"
+  ],
+  "faucets": ["https://faucet.cube.network"],
+  "nativeCurrency": {
+    "name": "Cube Chain Test Native Token",
+    "symbol": "CUBET",
+    "decimals": 18
+  },
+  "infoURL": "https://www.cube.network",
+  "shortName": "cubet",
+  "chainId": 1819,
+  "networkId": 1819,
+  "slip44": 1819,
+  "explorers": [{
+    "name": "cubetest-scan",
+    "url": "https://testnet.cubescan.network",
+    "standard": "EIP3091"
+  }]
+}