Find programmer_user's ip. (Note: No social engineering or actual hacking is required, all the information you need is public)

The flag is ictf{sha256_hash_of_ip}

You can find my GitHub profile on my Discord. Then you can find this repo https://github.com/programmeruser2/old-website, which contains links to many of my profiles. Doing a DNS lookup on the domains will show that gemini.programmeruser.tk points to a residential IP address.

Forensics

programmer_user