def valid_proof(transactions, last_hash, proof):
guess = (str(transactions) + str(last_hash) + str(proof)).encode()
# Hash the string.
guess_hash = hash_string_256(guess)
print(guess_hash)
# Define the conditions for a new valid hash.
return guess_hash[0:2] == "00"
def valid_proof(transactions, last_block_hash, proof):
# guess_str = str(transactions) + str(last_block_hash) + str(proof)
guess_str = generate_guess_string(transactions, last_block_hash, proof)
guess_str_encoded = guess_str.encode()
# guess_hash = hashlib.sha256(guess_str_encoded).hexdigest()
guess_hash = hash_utils.hash_string_256(guess_str_encoded)
# print(f"[debug]: guess_str ({guess_str}) and guess_hash ({guess_hash})", end="\r")
print(f"[debug]: guess_hash ({guess_hash})", end="\r")
return guess_hash[0:POW_DIGITS] == POW_PATTERN
def valid_proof(transactions, last_hash, proof):
"""Validate a proof.
Arguments:
transactions: Transaction of the block
last_hash: The stored previous_hash.
proof: The proof we are testing.
"""
guess = (str([tx.to_ordered_dict() for tx in transactions]) +
str(last_hash) + str(proof)).encode()
# Hash the string.
guess_hash = hash_string_256(guess)
print(guess_hash)
# Define the conditions for a new valid hash.
return guess_hash[0:2] == "00"
def is_valid_proof(transactions, last_block_hash, proof):
guess = (str(transactions) + str(last_block_hash) + str(proof)).encode()
guess_hash = hash_string_256(guess)
print(guess_hash)
return guess_hash[0:2] == '00'