Certificates
Claim printable certificates for paths, collections, and categories.
Overview
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Certificates are earned by completing curated work — every problem in a path or collection, 80% of a category, a lab at its target, every project step, 80% on an interview mock, or every research baseline. Start with a certification track below, then open a path or collection and solve your first problem.
Certification tracks
Curated routes from first principles to applied work. Complete every step to claim the track certificate.
Certificate catalog
Everything you can earn, with live progress and what each one needs.
Your certificates
Print, copy, or download each one as a PNG.
Certificate codes are SHA-256 fingerprints of the printed fields, computed in your browser. Anyone can re-check one on its verification page — no account and no server secret. Codes are self-attested: they prove the fields were not altered after issue.