存货融资新购活动

import hashlib
import json
from datetime import datetime

class Block:
    def __init__(self, index, previous_hash, timestamp, data, hash):
        self.index = index
        self.previous_hash = previous_hash
        self.timestamp = timestamp
        self.data = data
        self.hash = hash

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

def create_genesis_block():
    timestamp = datetime.now()
    data = "Genesis Block"
    hash = calculate_hash(0, "0", timestamp, data)
    return Block(0, "0", timestamp, data, hash)

def create_new_block(previous_block, data):
    index = previous_block.index + 1
    timestamp = datetime.now()
    hash = calculate_hash(index, previous_block.hash, timestamp, data)
    return Block(index, previous_block.hash, timestamp, data, hash)

# 创建区块链并添加创世区块
blockchain = [create_genesis_block()]
previous_block = blockchain[0]

# 添加新的融资交易区块
num_of_blocks_to_add = 10
for i in range(0, num_of_blocks_to_add):
    new_block_data = f"Transaction Data {i+1}"
    new_block = create_new_block(previous_block, new_block_data)
    blockchain.append(new_block)
    previous_block = new_block
    print(f"Block #{new_block.index} has been added to the blockchain!")
    print(f"Hash: {new_block.hash}\n")