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Bruno Ely Reis Garcia brunoerg

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brunoerg /
Last active Sep 17, 2019
A basic function to understand how PoW works
def hashMatchesDifficulty(self, hash, difficulty):
hashBinary = binascii.unhexlify(hash)
requiredPrefix = '0'*int(difficulty)
return hashBinary.startswith(requiredPrefix)
def findBlock(self, index, previousHash, timestamp, data, difficulty):
nonce = 0
while True:
hash = self.calculateHash(index, previousHash, timestamp, data, difficulty, nonce)
if self.hashMatchesDifficulty(hash, difficulty):
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