17 lines
491 B
Python
17 lines
491 B
Python
from hashlib import sha256
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digits58 = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
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def decode_base58(bc, length):
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n = 0
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for char in bc:
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n = n * 58 + digits58.index(char)
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return n.to_bytes(length, 'big')
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def check_bc(bc):
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try:
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bcbytes = decode_base58(bc, 25)
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return bcbytes[-4:] == sha256(sha256(bcbytes[:-4]).digest()).digest()[:4]
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except Exception:`
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return False
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print(check_bc('FN93RGsz25vUPMwoyzQvrM95G5M42PGNWS')) |