diff --git a/_data/chains/eip155-1666700000.json b/_data/chains/eip155-1666700000.json
new file mode 100644
index 00000000..f276861a
--- /dev/null
+++ b/_data/chains/eip155-1666700000.json
@@ -0,0 +1,20 @@
+{
+    "name": "Harmony Testnet Shard 0",
+    "chain": "Harmony",
+    "network": "testnet",
+    "rpc": [
+      "https://api.s0.b.hmny.io"
+    ],
+    "faucets": [
+    ],
+    "nativeCurrency": {
+      "name": "ONE",
+      "symbol": "ONE",
+      "decimals": 18
+    },
+    "infoURL": "https://www.harmony.one/",
+    "shortName": "hmy-b-s0",
+    "chainId": 1666700000,
+    "networkId": 1666700000
+  }
+  
\ No newline at end of file
diff --git a/_data/chains/eip155-1666700001.json b/_data/chains/eip155-1666700001.json
new file mode 100644
index 00000000..7fb96936
--- /dev/null
+++ b/_data/chains/eip155-1666700001.json
@@ -0,0 +1,20 @@
+{
+    "name": "Harmony Testnet Shard 1",
+    "chain": "Harmony",
+    "network": "testnet",
+    "rpc": [
+      "https://api.s1.b.hmny.io"
+    ],
+    "faucets": [
+    ],
+    "nativeCurrency": {
+      "name": "ONE",
+      "symbol": "ONE",
+      "decimals": 18
+    },
+    "infoURL": "https://www.harmony.one/",
+    "shortName": "hmy-b-s1",
+    "chainId": 1666700001,
+    "networkId": 1666700001
+  }
+  
\ No newline at end of file
diff --git a/_data/chains/eip155-1666700002.json b/_data/chains/eip155-1666700002.json
new file mode 100644
index 00000000..c81c44e6
--- /dev/null
+++ b/_data/chains/eip155-1666700002.json
@@ -0,0 +1,20 @@
+{
+    "name": "Harmony Testnet Shard 2",
+    "chain": "Harmony",
+    "network": "testnet",
+    "rpc": [
+      "https://api.s2.b.hmny.io"
+    ],
+    "faucets": [
+    ],
+    "nativeCurrency": {
+      "name": "ONE",
+      "symbol": "ONE",
+      "decimals": 18
+    },
+    "infoURL": "https://www.harmony.one/",
+    "shortName": "hmy-b-s2",
+    "chainId": 1666700002,
+    "networkId": 1666700002
+  }
+  
\ No newline at end of file
diff --git a/_data/chains/eip155-1666700003.json b/_data/chains/eip155-1666700003.json
new file mode 100644
index 00000000..98a9bb30
--- /dev/null
+++ b/_data/chains/eip155-1666700003.json
@@ -0,0 +1,20 @@
+{
+    "name": "Harmony Testnet Shard 3",
+    "chain": "Harmony",
+    "network": "testnet",
+    "rpc": [
+      "https://api.s3.b.hmny.io"
+    ],
+    "faucets": [
+    ],
+    "nativeCurrency": {
+      "name": "ONE",
+      "symbol": "ONE",
+      "decimals": 18
+    },
+    "infoURL": "https://www.harmony.one/",
+    "shortName": "hmy-b-s3",
+    "chainId": 1666700003,
+    "networkId": 1666700003
+  }
+  
\ No newline at end of file