mit neuen Checkpoints

Author: stallingerl

electrum/checkpoints.json

@@ -334,5 +334,121 @@
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         "cbb9daae26a894c148b1e110bc99608c96b98d3adeae1dedfcecefc188f473fc",
         1376401675055452882801399232352887291412068830154469192761344
+    ],
+    [
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+        1252502475567527500380843591901839094534861009604169324036096
+    ],
+    [
+        "3870b5d191d5dcc0a57892a507890644ddf171074a0a3b848006542164ff3ee3",
+        1290165085979847584963858328441085093031475142270953531113472
+    ],
+    [
+        "25a0c2aa87b36a6933d8093297f0a9052e49367607a37bbed8eb940e38aa14cb",
+        2156135406248017133934126199766964604037283295521485979910144
+    ],
+    [
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+        3282188609747618412834105861764577387213394902676041921200128
+    ],
+    [
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+        3457358980050752972899898360355966328137751259298116384325632
+    ],
+    [
+        "ef50f040af42c371b0f8879f0031c73bfcde5cc5a5aa1c9762c7731ae3353a44",
+        3558797924891747888212354066777099593619842839273693379559424
+    ],
+    [
+        "7f58210fc71b139a1840225af342dccc588461620892e0f91a047e923dc3f1e4",
+        3491343601164994924222853064030051584593680418071659946180608
+    ],
+    [
+        "10f6a173bef95eaf2c6a99a759d51c7a6c46ba76cbb129299a463d690dc24e80",
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+    ],
+    [
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+        3199556450184129685591423790060632716032672489207902091870208
+    ],
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+    ],
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+    ],
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+    ],
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+    ],
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+    ],
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+    ],
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+    ],
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+    ],
+    [
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+    ],
+    [
+        "c04e1e4678e004e59ffcae35f032ac56fe4d31ad763cbbc6fd2ddd9cb659df67",
+        3645426832825814853597634707527852271151442924372488043364352
+    ],
+    [
+        "3d03b26e316bd6ab44b5e8f2ca284e000d1dceb36b9620b333e0da005a734057",
+        3539696900470395449481775629430698139955218874854796962037760
+    ],
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+        "826b3f5d7f7b3861e5f2c8fa123528e742d871e4754d4f464c5e1efc3f5ccb96",
+        2816751324040157575884375569454702684438180406399415737122816
+    ],
+    [
+        "289efb3348ddf271f075f85046cbf8e86f6060dab2ef62d8ac6178a4bb64a2e7",
+        2520893864902752536445146525781172594685481106427138235432960
+    ],
+    [
+        "5d30cd30da5549742005d12fecbb5150919af2e42aeb047fac00019df9ec0370",
+        1684568138377092741550962519348488664527593842756125387128832
     ]
 ]

electrum/get_checkpoints_array.py

@@ -0,0 +1,67 @@
+#!/usr/bin/env python
+from json import loads, dumps
+from sys import exit, argv
+import base64
+import urllib.request, urllib.error, urllib.parse
+
+
+# From electrum.
+def bits_to_target(bits):
+    bitsN = (bits >> 24) & 0xff
+    if not (bitsN >= 0x03 and bitsN <= 0x1f):
+        raise BaseException("First part of bits should be in [0x03, 0x1e]")
+    bitsBase = bits & 0xffffff
+    if not (bitsBase >= 0x8000 and bitsBase <= 0x7fffff):
+        raise BaseException("Second part of bits should be in [0x8000, 0x7fffff]")
+    return bitsBase << (8 * (bitsN-3))
+
+def rpc(method, params):
+    data = {
+        "jsonrpc": "1.0",
+        "id":"1",
+        "method": method,
+        "params": params
+    }
+
+    data_json = dumps(data)
+    username = "admin"
+    password = "changeMe"
+    port = 8339
+    if len(argv) > 3:
+        port = argv[3]
+    url = "http://127.0.0.1:{}/".format(port)
+    req = urllib.request.Request(url, data_json.encode("utf-8"), {'content-type': 'application/json'})
+
+    base64string = base64.encodestring(('%s:%s' % (username, password)).encode()).decode().replace('\n', '')
+    req.add_header("Authorization", "Basic %s" % base64string)
+
+    response_stream = urllib.request.urlopen(req)
+    json_response = response_stream.read()
+
+    return loads(json_response)
+
+# Electrum checkpoints are blocks 2015, 2015 + 2016, 2015 + 2016*2, ...
+i = 2015
+INTERVAL = 2016
+
+checkpoints = []
+block_count = int(rpc('getblockcount', [])['result'])
+print(('Blocks: {}'.format(block_count)))
+while True:
+    h = rpc('getblockhash', [i])['result']
+    block = rpc('getblock', [h])['result']
+    bits = "0x" + block['bits']
+    print(bits)
+
+    checkpoints.append([
+        block['hash'],
+        bits_to_target(int(bits, 16))
+    ])
+
+    i += INTERVAL
+    if i > block_count:
+        print('Done.')
+        break
+
+with open('checkpoints_output.json', 'w+') as f:
+    f.write(dumps(checkpoints, indent=4, separators=(',', ':')))