Yes! You can contribute to the database by adding fights to existing fighters or by adding new fighters. Registration isn't open to the public to avoid defacement of records, but if you're known in the community you can contact the site administrator via the email below to get started.
Ratings and the resulting rankings are calculated using FIDE's implementation of ELO.
Via email: nulldev2@protonmail.com
Over 12000 fighters are currently in the database.