diff --git a/_data/chains/eip155-26.json b/_data/chains/eip155-26.json
new file mode 100644
index 00000000..d618a18d
--- /dev/null
+++ b/_data/chains/eip155-26.json
@@ -0,0 +1,23 @@
+{
+  "name": "GenesisL1 testnet",
+  "chain": "genesis",
+  "network": "testnet",
+  "rpc": [
+    "https://testrpc.genesisl1.org"
+  ],
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "L1 testcoin",
+    "symbol": "L1test",
+    "decimals": 18
+  },
+  "infoURL": "https://www.genesisl1.com",
+  "shortName": "L1test",
+  "chainId": 26,
+  "networkId": 26,
+  "explorers": [{
+    "name": "Genesis L1 testnet explorer",
+    "url": "https://testnet.genesisl1.org/",
+    "standard": "none"
+  }]
+}
diff --git a/_data/chains/eip155-29.json b/_data/chains/eip155-29.json
new file mode 100644
index 00000000..2fad79cc
--- /dev/null
+++ b/_data/chains/eip155-29.json
@@ -0,0 +1,23 @@
+{
+  "name": "GenesisL1",
+  "chain": "genesis",
+  "network": "mainnet",
+  "rpc": [
+    "https://rpc.genesisl1.org"
+  ],
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "L1 coin",
+    "symbol": "L1",
+    "decimals": 18
+  },
+  "infoURL": "https://www.genesisl1.com",
+  "shortName": "L1",
+  "chainId": 29,
+  "networkId": 29,
+  "explorers": [{
+    "name": "Genesis L1 blockchain explorer",
+    "url": "https://explorer.genesisl1.org/",
+    "standard": "none"
+  }]
+}