Search for data that hashes to the correct goal output hash. This script will randomly Skein1024 hash data and check the digest output to determine how many bits are different from the goal output. Whenever a "best" guess is found, it is submitted to the xkcd site, assuming your network connection is working.
Wait and hope you find a guess with a small diff (i.e. closer to the goal hash).
sudo ./quickstart.sh
source venv/bin/activate
python3 main.py
Be sure you have Python 3.0+ and PySkein.
python3 main.py
python3 main.py time // Outputs # hash/s