diff --git a/_data/chains/eip155-256256.json b/_data/chains/eip155-256256.json
new file mode 100644
index 00000000..1767c493
--- /dev/null
+++ b/_data/chains/eip155-256256.json
@@ -0,0 +1,24 @@
+{
+    "name": "CMP-Mainnet",
+    "chain": "CMP",
+    "network": "mainnet",
+    "rpc": [
+      "https://mainnet.block.caduceus.foundation",
+      "wss://mainnet.block.caduceus.foundation"
+    ],
+    "faucets": [],
+    "nativeCurrency": {
+      "name": "Caduceus Token",
+      "symbol": "CMP",
+      "decimals": 18
+    },
+    "infoURL": "https://caduceus.foundation/",
+    "shortName": "cmp-mainnet",
+    "chainId": 256256,
+    "networkId": 256256,
+    "explorers": [{
+      "name": "Mainnet Scan",
+      "url": "https://mainnet.scan.caduceus.foundation",
+      "standard": "none"
+    }]
+  }