diff --git a/_data/chains/eip155-707.json b/_data/chains/eip155-707.json
new file mode 100644
index 00000000..c7206e6c
--- /dev/null
+++ b/_data/chains/eip155-707.json
@@ -0,0 +1,24 @@
+{
+  "name": "BlockChain Station Mainnet",
+  "chain": "BCS",
+  "network": "mainnet",
+  "rpc": [
+    "https://rpc-mainnet.bcsdev.io",
+    "wss://rpc-ws-mainnet.bcsdev.io"
+  ],
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "BCS Token",
+    "symbol": "PLAY",
+    "decimals": 18
+  },
+  "infoURL": "https://blockchainstation.io",
+  "shortName": "play",
+  "chainId": 707,
+  "networkId": 707,
+  "explorers": [{
+    "name": "BlockChain Station Explorer",
+    "url": "https://explorer.bcsdev.io",
+    "standard": "EIP3091"
+  }]
+}
diff --git a/_data/chains/eip155-708.json b/_data/chains/eip155-708.json
new file mode 100644
index 00000000..98203ec6
--- /dev/null
+++ b/_data/chains/eip155-708.json
@@ -0,0 +1,26 @@
+{
+    "name": "BlockChain Station Testnet",
+    "chain": "BCS",
+    "network": "testnet",
+    "rpc": [
+      "https://rpc-testnet.bcsdev.io",
+      "wss://rpc-ws-testnet.bcsdev.io"
+    ],
+    "faucets": [
+      "https://faucet.bcsdev.io"
+    ],
+    "nativeCurrency": {
+      "name": "BCS Testnet Token",
+      "symbol": "tPLAY",
+      "decimals": 18
+    },
+    "infoURL": "https://blockchainstation.io",
+    "shortName": "tplay",
+    "chainId": 708,
+    "networkId": 708,
+    "explorers": [{
+      "name": "BlockChain Station Explorer",
+      "url": "https://testnet.bcsdev.io",
+      "standard": "EIP3091"
+    }]
+  }