update block header checkpoints

electrum/chains/mainnet/checkpoints.json

@@ -1846,5 +1846,13 @@
     [
         "0000000000000000000159186ff01cb830839027afce1c072816ad1caf6735c2",
         184058593202179251712735660462623250929428832597311488
+    ],
+    [
+        "00000000000000000000fd7f37b8fb43c92b11c9d2809f115d22a6b5dbeb7836",
+        190300666695219538076383598383154495706379320488361984
+    ],
+    [
+        "00000000000000000001209d8bd5b083d0eec0a0cfb72a9f922a5f46e3b4744f",
+        214194756963942469886095641713233006794734161633476608
     ]
 ]

electrum/chains/signet/checkpoints.json

@@ -562,5 +562,17 @@
     [
         "0000000019963af20c504e4e78fc7c5bbc5fd52efaa19b4ee778f6f213072c93",
         0
+    ],
+    [
+        "000000046df3b5b7b222fe177bfc016e92d760bf31d8670be3e5b2318a57c27f",
+        0
+    ],
+    [
+        "000000003da79540fc14abc1d14ee5b4cd635e4e903cf116862abc21e82db694",
+        0
+    ],
+    [
+        "000000102cd648540dabef56265de9ebfec7c43bd3192d873613f06e9bac372e",
+        0
     ]
 ]

electrum/chains/testnet/checkpoints.json

@@ -9582,5 +9582,21 @@
     [
         "00000000000026c176ab34dee51c7d6bcd101ace82b9d3a27cae9158fe4615e7",
         0
+    ],
+    [
+        "00000000000008740ccd0cd6f875599e851bb50daa188da402dc2e82cbe63432",
+        0
+    ],
+    [
+        "000000000000027e5f3c4cc7fb4929504cf0a67192473b936ae4ffad6121eba8",
+        0
+    ],
+    [
+        "0000000000000528bf19fababa130f28a8082d004750ff42ca1c7f2bde6be14e",
+        0
+    ],
+    [
+        "000000000000014455b175ee9e2218fea02a4f64ca4219dda6cb8014c266fdc6",
+        0
     ]
 ]

electrum/chains/testnet4/checkpoints.json

@@ -230,5 +230,13 @@
     [
         "0000000005dfc1e853b8d644598b77bdd97ef7578f9ccbb840aa3860fda9ddac",
         0
+    ],
+    [
+        "0000000002e9de570afba91146a43378199cc3b38fd52b2f4f1989734d22084a",
+        0
+    ],
+    [
+        "000000000d1359300f79d95e0db59f4c14099684718838720db7569d98348844",
+        0
     ]
 ]