Exemplo n.º 1
0
def write_default_blockchain() -> str:
    """Returns the string representation of the default Blockchain data."""

    genesis_block = Block()
    genesis_block.data = "This is the sickest Blockchain implementation ever."
    genesis_block.timestamp = time.time()
    genesis_block.previous_hash = ""

    # Create a temporary chain which we can convert to JSON.
    default_chain = Blockchain([])
    default_chain.blocks.append(genesis_block)
    save_chain(default_chain)

    return default_chain.to_json()
Exemplo n.º 2
0
def save_chain(chain: Blockchain, location: str = "chain_data.json") -> bool:
    """
    Returns a bool indicating whether or not the data was saved.
    
    Parameters:
    chain       -- the Blockchain to write to the file.
    location    -- the path to the file in which the data will be written.
    """

    try:
        with open(location, "w") as chain_data_h:
            chain_data_h.write(chain.to_json())
            return True
    except:
        return False