比特币算法

```python

Bitcoin Algorithm Source Code (Simplified)

import hashlib

import time

class Block:

def __init__(self, index, timestamp, data, previous_hash):

self.index = index

self.timestamp = timestamp

self.data = data

self.previous_hash = previous_hash

self.nonce = 0

self.hash = self.calculate_hash()

def calculate_hash(self):

sha = hashlib.sha256()

sha.update((str(self.index) str(self.timestamp) str(self.data) str(self.previous_hash) str(self.nonce)).encode('utf8'))

return sha.hexdigest()

def mine_block(self, difficulty):

while self.hash[0:difficulty] != '0' * difficulty:

self.nonce = 1

self.hash = self.calculate_hash()

print("Block mined:", self.hash)

class Blockchain:

def __init__(self):

self.chain = [self.create_genesis_block()]

self.difficulty = 4 Adjust difficulty here

self.pending_transactions = []

def create_genesis_block(self):

return Block(0, time.time(), "Genesis Block", "0")

def get_latest_block(self):

return self.chain[1]

def add_block(self, new_block):

new_block.previous_hash = self.get_latest_block().hash

new_block.mine_block(self.difficulty)

self.chain.append(new_block)

def add_transaction(self, sender, receiver, amount):

self.pending_transactions.append({"sender": sender, "receiver": receiver, "amount": amount})

def mine_pending_transactions(self, miner_reward_address):

block = Block(len(self.chain), time.time(), self.pending_transactions, self.get_latest_block().hash)

block.mine_block(self.difficulty)

print("Block successfully mined.")

self.chain.append(block)

self.pending_transactions = [{"sender": None, "receiver": miner_reward_address, "amount": 10}] Miner reward

Example usage:

Create a blockchain

my_blockchain = Blockchain()

Add transactions

my_blockchain.add_transaction("Alice", "Bob", 5)

my_blockchain.add_transaction("Bob", "Charlie", 10)

Mine pending transactions

my_blockchain.mine_pending_transactions("miner_address")

Output blockchain

for block in my_blockchain.chain:

print("Block Hash:", block.hash)

print("Transactions:", block.data)

print()

```

这是一个简化版的比特币算法源代码。在这个示例中，我们定义了一个简单的区块链和区块类，以及挖矿的过程。在实际的比特币实现中，还有更多的复杂性和安全性措施。

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