diff --git a/_data/chains/eip155-26863.json b/_data/chains/eip155-26863.json
new file mode 100644
index 00000000..7f3416db
--- /dev/null
+++ b/_data/chains/eip155-26863.json
@@ -0,0 +1,26 @@
+{
+  "name": "OasisChain Mainnet",
+  "chain": "OasisChain",
+  "rpc": [
+    "https://rpc1.oasischain.io",
+    "https://rpc2.oasischain.io",
+    "https://rpc3.oasischain.io"
+  ],
+  "faucets": [
+    "http://faucet.oasischain.io"
+  ],
+  "nativeCurrency": {
+    "name": "OAC",
+    "symbol": "OAC",
+    "decimals": 18
+  },
+  "infoURL": "https://scan.oasischain.io",
+  "shortName": "OAC",
+  "chainId": 26863,
+  "networkId": 26863,
+  "explorers": [{
+    "name": "OasisChain Explorer",
+    "url": "https://scan.oasischain.io",
+    "standard": "EIP3091"
+  }]
+}
\ No newline at end of file