mining_condition.py

mining_condition.py

mining_hash = bin_convert(hashlib.sha224((miner_address + nonce + db_block_hash)
                                         .encode("utf-8")).hexdigest())
diff_drop_time = 180
mining_condition = bin_convert(db_block_hash)[:diff]

if mining_condition in mining_hash:  # simplified comparison, no backwards mining
    app_log.info("Difficulty requirement satisfied for block {} from {}".format (block_height_new, peer_ip))
    diff_save = diff

    # Tail Removal Condition Check Starts Here
elif received_timestamp > db_timestamp_last + diff_drop_time:
    time_difference = received_timestamp - db_timestamp_last
    diff_dropped = diff - time_difference / diff_drop_time
    if diff_dropped < 50:
        diff_dropped = 50
    
    mining_condition = bin_convert(db_block_hash)[:diff_dropped]

    if mining_condition in mining_hash:
        app_log.info("Readjusted difficulty requirement satisfied for block {} from {}"
                     .format(block_height_new, peer_ip))
        diff_save = diff
    else:
        raise ValueError("Readjusted difficulty too low for block {} from {}, should be at least {}"
                         .format(block_height_new, peer_ip, diff_dropped))
else:
    raise ValueError("Difficulty too low for block {} from {}, should be at least {}"
                     .format(block_height_new, peer_ip, diff))