diff --git a/electrum/util.py b/electrum/util.py
index 49c5ffef9..f647ea0c3 100644
--- a/electrum/util.py
+++ b/electrum/util.py
@@ -970,37 +970,7 @@ def delta_time_str(distance_in_time: timedelta, *, include_seconds: bool = False
 
 
 mainnet_block_explorers = {
-    '3xpl.com': ('https://3xpl.com/bitcoin/',
-                        {'tx': 'transaction/', 'addr': 'address/'}),
-    'Bitflyer.jp': ('https://chainflyer.bitflyer.jp/',
-                        {'tx': 'Transaction/', 'addr': 'Address/'}),
-    'Blockchain.info': ('https://blockchain.com/btc/',
-                        {'tx': 'tx/', 'addr': 'address/'}),
-    'Blockstream.info': ('https://blockstream.info/',
-                        {'tx': 'tx/', 'addr': 'address/'}),
-    'Bitaps.com': ('https://btc.bitaps.com/',
-                        {'tx': '', 'addr': ''}),
-    'BTC.com': ('https://btc.com/',
-                        {'tx': '', 'addr': ''}),
-    'Chain.so': ('https://www.chain.so/',
-                        {'tx': 'tx/BTC/', 'addr': 'address/BTC/'}),
-    'Insight.is': ('https://insight.bitpay.com/',
-                        {'tx': 'tx/', 'addr': 'address/'}),
-    'BlockCypher.com': ('https://live.blockcypher.com/btc/',
-                        {'tx': 'tx/', 'addr': 'address/'}),
-    'Blockchair.com': ('https://blockchair.com/bitcoin/',
-                        {'tx': 'transaction/', 'addr': 'address/'}),
-    'blockonomics.co': ('https://www.blockonomics.co/',
-                        {'tx': 'api/tx?txid=', 'addr': '#/search?q='}),
-    'mempool.space': ('https://mempool.space/',
-                        {'tx': 'tx/', 'addr': 'address/'}),
-    'mempool.emzy.de': ('https://mempool.emzy.de/',
-                        {'tx': 'tx/', 'addr': 'address/'}),
-    'OXT.me': ('https://oxt.me/',
-                        {'tx': 'transaction/', 'addr': 'address/'}),
-    'mynode.local': ('http://mynode.local:3002/',
-                        {'tx': 'tx/', 'addr': 'address/'}),
-    'system default': ('blockchain:/',
+    'Palladium Explorer': ('https://explorer.palladium-coin.com/',
                         {'tx': 'tx/', 'addr': 'address/'}),
 }