diff --git a/_data/chains/eip155-2018.json b/_data/chains/eip155-2018.json
new file mode 100644
index 00000000..2d90fbba
--- /dev/null
+++ b/_data/chains/eip155-2018.json
@@ -0,0 +1,24 @@
+{
+  "name": "PublicMint Devnet",
+  "title": "Public Mint Devnet",
+  "chain": "PublicMint",
+  "rpc": ["https://rpc.dev.publicmint.io:8545"],
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "USD",
+    "symbol": "USD",
+    "decimals": 18
+  },
+  "infoURL": "https://publicmint.com",
+  "shortName": "pmint_dev",
+  "chainId": 2018,
+  "networkId": 2018,
+  "slip44": 60,
+  "explorers": [
+    {
+      "name": "PublicMint Explorer",
+      "url": "https://explorer.dev.publicmint.io",
+      "standard": "EIP3091"
+    }
+  ]
+}
diff --git a/_data/chains/eip155-2019.json b/_data/chains/eip155-2019.json
new file mode 100644
index 00000000..98dce675
--- /dev/null
+++ b/_data/chains/eip155-2019.json
@@ -0,0 +1,24 @@
+{
+  "name": "PublicMint Testnet",
+  "title": "Public Mint Testnet",
+  "chain": "PublicMint",
+  "rpc": ["https://rpc.tst.publicmint.io:8545"],
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "USD",
+    "symbol": "USD",
+    "decimals": 18
+  },
+  "infoURL": "https://publicmint.com",
+  "shortName": "pmint_test",
+  "chainId": 2019,
+  "networkId": 2019,
+  "slip44": 60,
+  "explorers": [
+    {
+      "name": "PublicMint Explorer",
+      "url": "https://explorer.tst.publicmint.io",
+      "standard": "EIP3091"
+    }
+  ]
+}
diff --git a/_data/chains/eip155-2020.json b/_data/chains/eip155-2020.json
index fe93f2e1..ce5acf41 100644
--- a/_data/chains/eip155-2020.json
+++ b/_data/chains/eip155-2020.json
@@ -1,15 +1,24 @@
 {
-  "name": "420coin",
-  "chain": "420",
-  "rpc": [],
+  "name": "PublicMint Mainnet",
+  "title": "Public Mint Mainnet",
+  "chain": "PublicMint",
+  "rpc": ["https://rpc.publicmint.io:8545"],
   "faucets": [],
   "nativeCurrency": {
-    "name": "Fourtwenty",
-    "symbol": "420",
+    "name": "USD",
+    "symbol": "USD",
     "decimals": 18
   },
-  "infoURL": "https://420integrated.com",
-  "shortName": "420",
+  "infoURL": "https://publicmint.com",
+  "shortName": "pmint",
   "chainId": 2020,
-  "networkId": 2020
+  "networkId": 2020,
+  "slip44": 60,
+  "explorers": [
+    {
+      "name": "PublicMint Explorer",
+      "url": "https://explorer.publicmint.io",
+      "standard": "EIP3091"
+    }
+  ]
 }