Aug 5, 2020

bool input::is_locked(size_t block_height, uint32_t median_time_past) const
{
    if ((sequence_ & relative_locktime_disabled) != 0)
        return false;

    // bip68: a minimum block-height constraint over the input's age.
    const auto minimum = (sequence_ & relative_locktime_mask);
    const auto& prevout = previous_output_.metadata;

    if ((sequence_ & relative_locktime_time_locked) != 0)
    {
        // Median time past must be monotonically-increasing by block.
        BITCOIN_ASSERT(median_time_past >= prevout.median_time_past);
        const auto age_seconds = median_time_past - prevout.median_time_past;
        return age_seconds < (minimum << relative_locktime_seconds_shift);
    }

    std::cout << "bh: " << block_height << ", ph: " << prevout.height << std::endl;
    if (!(block_height >= prevout.height)) {
        std::cout << "IS_LOCKED block_height=" << block_height
            << " prevout = " << encode_base16(previous_output_.hash()) << ":"
            << previous_output_.index() << std::endl;
        std::cout << "prevout.height: " << prevout.height << std::endl;

        std::cout << std::endl << boost::stacktrace::stacktrace() << std::endl;
    }
    BITCOIN_ASSERT(block_height >= prevout.height);
    const auto age_blocks = block_height - prevout.height;
    return age_blocks < minimum;
}