def main():
blockchain = Blockchain()
database = ["hello", "goodbye", "test", "DATA here", "test2"]
num = 0
for data in database:
num += 1
blockchain.mine(Block(num, data=data))
for block in blockchain.chain:
print(block)
print(blockchain.isValid())
# i try to change data in blck number 2 without valid nonce
blockchain.chain[2].data = "NEW DATA"
blockchain.mine(blockchain.chain[2])
print(blockchain.isValid())
def main():
blockchain = Blockchain()
database = ["Hello", "There", "How you doing?"]
num = 0
for data in database:
num += 1
blockchain.mining(Block(data, num))
for block in blockchain.chain:
print(block)
print(blockchain.isValid())
