diff --git a/defs/bitcoin/monetaryunit.json b/defs/bitcoin/monetaryunit.json
index e5792a2e1c..63f2b992c9 100644
--- a/defs/bitcoin/monetaryunit.json
+++ b/defs/bitcoin/monetaryunit.json
@@ -33,7 +33,9 @@
   "uri_prefix": "monetaryunit",
   "min_address_length": 27,
   "max_address_length": 34,
-  "bitcore": [],
+  "bitcore": [
+    "https://explorer.monetaryunit.org"
+  ],
   "blockbook": [],
   "cooldown": 100
 }
diff --git a/defs/ethereum/networks.json b/defs/ethereum/networks.json
index 219bcac3f2..031872ea9c 100644
--- a/defs/ethereum/networks.json
+++ b/defs/ethereum/networks.json
@@ -166,5 +166,13 @@
     "name": "Pirl",
     "rskip60": false,
     "url": "https://pirl.io"
+  },
+  {
+    "chain_id": 1620,
+    "slip44": 1620,
+    "shortcut": "ATH",
+    "name": "Atheios",
+    "rskip60": false,
+    "url": "https://atheios.com"
   }
 ]