diff --git a/_data/chains/eip155-42261.json b/_data/chains/eip155-42261.json
new file mode 100644
index 00000000..6b620b7a
--- /dev/null
+++ b/_data/chains/eip155-42261.json
@@ -0,0 +1,25 @@
+{
+  "name": "Emerald Paratime Testnet",
+  "chain": "Emerald",
+  "network": "testnet",
+  "icon": "oasis",
+  "rpc": [
+    "https://testnet.emerald.oasis.dev/",
+    "wss://testnet.emerald.oasis.dev/ws"
+  ],
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "Emerald Rose",
+    "symbol": "ROSE",
+    "decimals": 18
+  },
+  "infoURL": "https://docs.oasis.dev/general/developer-resources/overview",
+  "shortName": "emerald",
+  "chainId": 42261,
+  "networkId": 42261,
+  "explorers": [{
+    "name": "Emerald Paratime Testnet Explorer",
+    "url": "https://testnet.explorer.emerald.oasis.dev/",
+    "standard": "none"
+  }]
+}
diff --git a/_data/chains/eip155-42262.json b/_data/chains/eip155-42262.json
new file mode 100644
index 00000000..e606b39c
--- /dev/null
+++ b/_data/chains/eip155-42262.json
@@ -0,0 +1,25 @@
+{
+  "name": "Emerald Paratime Mainnet",
+  "chain": "Emerald",
+  "network": "Mainnet",
+  "icon": "oasis",
+  "rpc": [
+    "https://emerald.oasis.dev",
+    "wss://emerald.oasis.dev/ws"
+  ],
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "Emerald Rose",
+    "symbol": "ROSE",
+    "decimals": 18
+  },
+  "infoURL": "https://docs.oasis.dev/general/developer-resources/overview",
+  "shortName": "emerald",
+  "chainId": 42262,
+  "networkId": 42262,
+  "explorers": [{
+    "name": "Emerald Paratime Mainnet Explorer",
+    "url": "https://explorer.emerald.oasis.dev/",
+    "standard": "none"
+  }]
+}
diff --git a/_data/icons/oasis.json b/_data/icons/oasis.json
new file mode 100644
index 00000000..9696c62c
--- /dev/null
+++ b/_data/icons/oasis.json
@@ -0,0 +1,8 @@
+[
+  {
+    "url": "ipfs://bafkreiespupb52akiwrexxg7g72mh7m7h7lum5hmqijmpdh3kmuunzclha",
+    "width": 2000,
+    "height": 2000,
+    "format": "png"
+  }
+]