diff --git a/_data/chains/eip155-123.json b/_data/chains/eip155-123.json
new file mode 100644
index 00000000..64f46eec
--- /dev/null
+++ b/_data/chains/eip155-123.json
@@ -0,0 +1,18 @@
+{
+  "name": "Fuse Sparknet",
+  "chain": "fuse",
+  "network": "testnet",
+  "rpc": [
+    "https://rpc.fusespark.io"
+  ],
+  "faucets": ["https://get.fusespark.io"],
+  "nativeCurrency": {
+    "name": "Spark",
+    "symbol": "SPARK",
+    "decimals": 18
+  },
+  "infoURL": "https://docs.fuse.io/general/fuse-network-blockchain/fuse-testnet",
+  "shortName": "spark",
+  "chainId": 123,
+  "networkId": 123
+}