forked from luke-jr/python-blkmaker
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathexample.py
More file actions
executable file
·77 lines (68 loc) · 2.05 KB
/
example.py
File metadata and controls
executable file
·77 lines (68 loc) · 2.05 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
#!/usr/bin/python
# Copyright 2012-2014 Luke Dashjr
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the standard MIT license. See COPYING for more details.
from blkmaker import _dblsha256
import blktemplate
import json
import struct
import sys
# This test_input data is released under the terms of the Creative Commons "CC0 1.0 Universal" license and/or copyright waiver.
test_input = '''
{
"result": {
"previousblockhash": "000000004d424dec1c660a68456b8271d09628a80cc62583e5904f5894a2483c",
"target": "00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
"noncerange": "00000000ffffffff",
"transactions": [],
"sigoplimit": 20000,
"expires": 120,
"longpoll": "/LP",
"height": 23957,
"coinbasetxn": {
"data": "01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff1302955d0f00456c6967697573005047dc66085fffffffff02fff1052a010000001976a9144ebeb1cd26d6227635828d60d3e0ed7d0da248fb88ac01000000000000001976a9147c866aee1fa2f3b3d5effad576df3dbf1f07475588ac00000000"
},
"version": 2,
"curtime": 1346886758,
"mutable": ["coinbase/append"],
"sizelimit": 1000000,
"bits": "ffff001d"
},
"id": 0,
"error": null
}
'''
def send_json(req):
print(json.dumps(req, indent=4))
tmpl = blktemplate.Template()
req = tmpl.request()
# send req to server and parse response into req
send_json(req)
if (len(sys.argv) == 2):
req = json.load(sys.stdin)
else:
req = json.loads(test_input)
send_json(req)
try:
# Bypass Python 3 idiocy
range = xrange
except:
pass
tmpl.add(req)
while (tmpl.time_left() and tmpl.work_left()):
(data, dataid) = tmpl.get_data()
assert(len(data) >= 76)
# mine the right nonce
for nonce in range(0x7fffffff):
data = data[:76] + struct.pack('!I', nonce)
blkhash = _dblsha256(data)
if blkhash[28:] == b'\0\0\0\0':
break
if (not (nonce % 0x1000)):
sys.stdout.write("0x%8x hashes done...\r" % nonce)
sys.stdout.flush()
print("Found nonce: 0x%8x \n" % nonce)
req = tmpl.submit(data, dataid, nonce)
# send req to server
send_json(req)