diff --git a/defs/bitcoin/actinium.json b/defs/bitcoin/actinium.json
index f7f5e7e0a..ed072ff2c 100644
--- a/defs/bitcoin/actinium.json
+++ b/defs/bitcoin/actinium.json
@@ -33,9 +33,6 @@
     "min_address_length": 27,
     "max_address_length": 34,
     "bitcore": [],
-    "blockbook": [
-      "https://explorer.actinium.org",
-      "https://explorer2.actinium.org"
-    ],
+    "blockbook": [],
     "cooldown": 100
-  }
+}
diff --git a/defs/bitcoin/capricoin.json b/defs/bitcoin/capricoin.json
index 2eef0c926..f0b82f694 100644
--- a/defs/bitcoin/capricoin.json
+++ b/defs/bitcoin/capricoin.json
@@ -11,7 +11,7 @@
   "maxfee_kb": 2000000,
   "minfee_kb": 1000,
   "signed_message_header": "Capricoin Signed Message:\n",
-  "hash_genesis_block": "000007abc632537def4bce0806ca008150b19363f887ad0cb5cf582804f8bc3d",
+  "hash_genesis_block": "00000d23fa0fc52c90893adb1181c9ddffb6c797a3e41864b9a23aa2f2981fe3",
   "xprv_magic": 76066276,
   "xpub_magic": 76067358,
   "xpub_magic_segwit_p2sh": 77429938,
diff --git a/defs/bitcoin/crown.json b/defs/bitcoin/crown.json
index eabb1890d..71c36b31f 100644
--- a/defs/bitcoin/crown.json
+++ b/defs/bitcoin/crown.json
@@ -33,8 +33,7 @@
   "min_address_length": 27,
   "max_address_length": 34,
   "bitcore": [
-    "https://crw-bitcore.crown.tech",
-    "https://crw2-bitcore.crown.tech"
+    "https://crw-bitcore.crown.tech"
   ],
   "blockbook": [],
   "cooldown": 100
diff --git a/defs/bitcoin/decred_testnet.json b/defs/bitcoin/decred_testnet.json
index e4b20e9bd..d1f31c479 100644
--- a/defs/bitcoin/decred_testnet.json
+++ b/defs/bitcoin/decred_testnet.json
@@ -11,7 +11,7 @@
   "maxfee_kb": 10000000,
   "minfee_kb": 1000,
   "signed_message_header": "Decred Signed Message:\n",
-  "hash_genesis_block": "4261602a9d07d80ad47621a64ba6a07754902e496777edc4ff581946bd7bc29c",
+  "hash_genesis_block": "a649dce53918caf422e9c711c858837e08d626ecfcd198969b24f7b634a49bac",
   "xprv_magic": 70615959,
   "xpub_magic": 70617041,
   "xpub_magic_segwit_p2sh": null,
diff --git a/defs/bitcoin/monetaryunit.json b/defs/bitcoin/monetaryunit.json
index d27f77a62..ca95e27d6 100644
--- a/defs/bitcoin/monetaryunit.json
+++ b/defs/bitcoin/monetaryunit.json
@@ -32,9 +32,7 @@
   "uri_prefix": "monetaryunit",
   "min_address_length": 27,
   "max_address_length": 34,
-  "bitcore": [
-    "https://explorer.monetaryunit.org"
-  ],
+  "bitcore": [],
   "blockbook": [],
   "cooldown": 100
 }