diff --git a/_data/chains/eip155-1008.json b/_data/chains/eip155-1008.json
new file mode 100644
index 00000000..9931f8c5
--- /dev/null
+++ b/_data/chains/eip155-1008.json
@@ -0,0 +1,28 @@
+{
+    "name":"Eurus Mainnet",
+    "chain":"EUN",
+    "network":"eurus",
+    "rpc":[
+       "https://mainnet.eurus.network/"
+    ],
+    "faucets":[
+    ],
+    "nativeCurrency":{
+       "name":"Eurus",
+       "symbol":"EUN",
+       "decimals":18
+    },
+    "infoURL":"https://eurus.network",
+    "shortName":"eun",
+    "chainId":1008,
+    "networkId":1008,
+    "icon":"eurus",
+    "explorers":[
+       {
+          "name":"eurusexplorer",
+          "url":"https://explorer.eurus.network",
+          "icon":"eurus",
+          "standard":"none"
+       }
+    ]
+ }
\ No newline at end of file
diff --git a/_data/chains/eip155-300.json b/_data/chains/eip155-300.json
new file mode 100644
index 00000000..fb5b4f86
--- /dev/null
+++ b/_data/chains/eip155-300.json
@@ -0,0 +1,24 @@
+{
+  "name": "Optimism on Gnosis Chain",
+  "chain": "OGC",
+  "rpc": [
+    "https://optimism.gnosischain.com",
+    "wss://optimism.gnosischain.com/wss"
+  ],
+  "faucets": ["https://faucet.gimlu.com/gnosis"],
+  "nativeCurrency": {
+    "name": "xDAI",
+    "symbol": "xDAI",
+    "decimals": 18
+  },
+  "infoURL": "https://www.xdaichain.com/for-developers/optimism-optimistic-rollups-on-gc",
+  "shortName": "ogc",
+  "chainId": 300,
+  "networkId": 300,
+  "explorers": [{
+    "name": "blockscout",
+    "url": "https://blockscout.com/xdai/optimism",
+    "icon": "blockscout",
+    "standard": "EIP3091"
+  }]
+}
diff --git a/_data/icons/eurus.json b/_data/icons/eurus.json
new file mode 100644
index 00000000..e45a43bc
--- /dev/null
+++ b/_data/icons/eurus.json
@@ -0,0 +1,8 @@
+[
+    {
+        "url":"ipfs://QmaGd5L9jGPbfyGXBFhu9gjinWJ66YtNrXq8x6Q98Eep9e",
+        "width":471,
+        "height":471,
+        "format":"svg"
+    }
+]
\ No newline at end of file
diff --git a/_data/icons/eurusexplorer.json b/_data/icons/eurusexplorer.json
new file mode 100644
index 00000000..e45a43bc
--- /dev/null
+++ b/_data/icons/eurusexplorer.json
@@ -0,0 +1,8 @@
+[
+    {
+        "url":"ipfs://QmaGd5L9jGPbfyGXBFhu9gjinWJ66YtNrXq8x6Q98Eep9e",
+        "width":471,
+        "height":471,
+        "format":"svg"
+    }
+]
\ No newline at end of file