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@nickodell nickodell/mine.py forked from shirriff/mine.py
Last active Aug 29, 2015

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Enumerate hashes - thanks to Ken Shirriff
#!/usr/bin/python
import hashlib, struct
# Mine genesis block
ver = 1
prev_block = "0000000000000000000000000000000000000000000000000000000000000000"
mrkl_root = "4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"
time_ = 1231006505
bits = 0x1d00ffff
# https://en.bitcoin.it/wiki/Difficulty
exp = bits >> 24
mant = bits & 0xffffff
target_hexstr = '%064x' % (mant * (1<<(8*(exp - 3))))
target_str = target_hexstr.decode('hex')
nonce = 0
while nonce < (2**32):
header = ( struct.pack("<L", ver) + prev_block.decode('hex')[::-1] +
mrkl_root.decode('hex')[::-1] + struct.pack("<LLL", time_, bits, nonce))
hash = hashlib.sha256(hashlib.sha256(header).digest()).digest()
print nonce, hash[::-1].encode('hex')
if hash[::-1] < target_str:
print 'success'
#break
nonce += 1
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