diff --git a/_data/chains/eip155-311752642.json b/_data/chains/eip155-311752642.json
new file mode 100644
index 00000000..fa4aaf5d
--- /dev/null
+++ b/_data/chains/eip155-311752642.json
@@ -0,0 +1,26 @@
+{
+  "name": "OneLedger Nexus Mainnet",
+  "chain": "OLT",
+  "network": "mainnet",
+  "icon": "oneledger",
+  "rpc": [
+    "https://nexus-rpc.oneledger.network"
+  ],
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "OLT",
+    "symbol": "OLT",
+    "decimals": 18
+  },
+  "infoURL": "https://oneledger.io",
+  "shortName": "nexus",
+  "chainId": 311752642,
+  "networkId": 311752642,
+  "explorers": [
+    {
+      "name": "OneLedger Block Explorer",
+      "url": "https://nexus-explorer.oneledger.network",
+      "standard": "EIP3091"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/_data/chains/eip155-4216137055.json b/_data/chains/eip155-4216137055.json
new file mode 100644
index 00000000..c88d8fa5
--- /dev/null
+++ b/_data/chains/eip155-4216137055.json
@@ -0,0 +1,28 @@
+{
+  "name": "OneLedger Frankenstein Testnet",
+  "chain": "OLT",
+  "network": "testnet",
+  "icon": "oneledger",
+  "rpc": [
+    "https://frankenstein-rpc.oneledger.network"
+  ],
+  "faucets": [
+    "https://frankenstein-faucet.oneledger.network"
+  ],
+  "nativeCurrency": {
+    "name": "OLT",
+    "symbol": "OLT",
+    "decimals": 18
+  },
+  "infoURL": "https://oneledger.io",
+  "shortName": "frankenstein",
+  "chainId": 4216137055,
+  "networkId": 4216137055,
+  "explorers": [
+    {
+      "name": "OneLedger Block Explorer",
+      "url": "https://frankenstein-explorer.oneledger.network",
+      "standard": "EIP3091"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/_data/icons/oneledger.json b/_data/icons/oneledger.json
new file mode 100644
index 00000000..dd6f0d1e
--- /dev/null
+++ b/_data/icons/oneledger.json
@@ -0,0 +1,8 @@
+[
+  {
+    "url": "ipfs://QmRhqq4Gp8G9w27ND3LeFW49o5PxcxrbJsqHbpBFtzEMfC",
+    "width": 225,
+    "height": 225,
+    "format": "png"
+  }
+]
\ No newline at end of file