Пример #1
0
def blockchain():
    bc = BlockChain()

    blocks = bc.print_blockchain()

    blocks = sorted(blocks, key=lambda s: s['Data'])

    return json.dumps(blocks)
Пример #2
0
def iter_blockchain(last_hash=None):
    bc = BlockChain()

    if not last_hash:
        last_hash = bc.blocks.get("l")

    last_block = bc.blocks.get(last_hash).decode()

    print(last_block)
    if eval(last_block)["PrevBlockHash"]:
        return iter_blockchain(eval(last_block)["PrevBlockHash"])

    # ### the way to itertor.
    # for i in range(bc.get_height()):
    #     print(bc.iterator())

    print(next(bc.iterator()))
    print(next(bc.iterator()))
    print(next(bc.iterator()))
Пример #3
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def test_create_bc():
    bc = BlockChain()

    # 创世区块
    coinbase = new_coinbase_tx("7AgP8z7XYyZ2sdnVJ6HCiE5X2reJDf")
    genesis_block = new_genesis_block(coinbase)
    bc.add_block(genesis_block)

    b = Block()
    # 自定义几个block
    for i in range(5):
        transactions = [b'Node1', b"Node2", b"Node3", b"Node4"]
        last_hash = bc.blocks.get("l").decode()
        height = bc.get_height()
        new_block = b.new_block(transactions, last_hash, height + 1)
        bc.add_block(new_block)
Пример #4
0
    if eval(last_block)["PrevBlockHash"]:
        return iter_blockchain(eval(last_block)["PrevBlockHash"])

    # ### the way to itertor.
    # for i in range(bc.get_height()):
    #     print(bc.iterator())

    print(next(bc.iterator()))
    print(next(bc.iterator()))
    print(next(bc.iterator()))


if __name__ == '__main__':
    # test_create_bc()
    # s = iter_blockchain()
    bc = BlockChain()

    while True:
        try:
            last_block = next(bc.iterator())
        except StopIteration:
            genesis_hash = bc.blocks.get(bc.current_hash).decode()
            last_block = eval(genesis_hash)

            coinbase_tx = last_block["Transactions"]

            for tx in coinbase_tx:

                tx_str = tx.decode()
                print(json.loads(tx_str))
            break
Пример #5
0
#!/usr/bin/env python
# -*- coding:utf-8 -*-
"""
This Document is Created by  At 2018/7/9 
"""

from core.blockchain.blockchain import BlockChain

if __name__ == '__main__':
    bc = BlockChain()

    for i in range(10):
        bc.add_block("Magic Test %d" % i)

    bc.print_blockchain()