Inspiration

import hashlib import datetime

class Block: def init(self, data, previous_hash): self.timestamp = datetime.datetime.utcnow() self.data = data self.previous_hash = previous_hash self.hash = self.calculate_hash()

def calculate_hash(self):
    hash_string = str(self.timestamp) + str(self.data) + str(self.previous_hash)
    return hashlib.sha256(hash_string.encode('utf-8')).hexdigest()

class Blockchain: def init(self): self.chain = [self.create_genesis_block()]

def create_genesis_block(self):
    return Block("Genesis Block", "0")

def get_last_block(self):
    return self.chain[-1]

def add_block(self, new_block):
    new_block.previous_hash = self.get_last_block().hash
    new_block.hash = new_block.calculate_hash()
    self.chain.append(new_block)

Tạo blockchain

my_blockchain = Blockchain()

Thêm các block vào blockchain

my_blockchain.add_block(Block("Transaction 1", "")) my_blockchain.add_block(Block("Transaction 2", "")) my_blockchain.add_block(Block("Transaction 3", ""))

In ra thông tin của từng block trong blockchain

for block in my_blockchain.chain: print("Timestamp:", block.timestamp) print("Data:", block.data) print("Previous Hash:", block.previous_hash) print("Hash:", block.hash) print("------------------------------------")