diff --git a/_data/chains/eip155-333777.json b/_data/chains/eip155-333777.json
new file mode 100644
index 00000000..a54b2b62
--- /dev/null
+++ b/_data/chains/eip155-333777.json
@@ -0,0 +1,22 @@
+{
+  "name": "Oone Chain Testnet",
+  "chain": "OONE",
+  "rpc": ["https://blockchain-test.adigium.world"],
+  "faucets": ["https://apps-test.adigium.com/faucet"],
+  "nativeCurrency": {
+    "name": "Oone",
+    "symbol": "tOONE",
+    "decimals": 18
+  },
+  "infoURL": "https://oone.world",
+  "shortName": "oonetest",
+  "chainId": 333777,
+  "networkId": 333777,
+  "explorers": [
+    {
+      "name": "expedition",
+      "url": "https://explorer-test.adigium.world",
+      "standard": "none"
+    }
+  ]
+}