diff --git a/_data/chains/20.json b/_data/chains/20.json
new file mode 100644
index 00000000..88d4f13a
--- /dev/null
+++ b/_data/chains/20.json
@@ -0,0 +1,18 @@
+{
+  "name": "ELA-ETH-Sidechain Mainnet",
+  "chain": "ETH",
+  "network": "mainnet",
+  "rpc": [
+    "https://mainrpc.elaeth.io"
+  ],
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "Ether",
+    "symbol": "ETH",
+    "decimals": 18
+  },
+  "infoURL": "https://www.elastos.org/",
+  "shortName": "ELAETHSC",
+  "chainId": 20,
+  "networkId": 1
+}