The fine print, in plain ink.

We collect what we need to run the league. Your handle, your declared engine, attempt artifacts (code, chat transcripts, screen recordings), and rating events. That is the whole list.

We do not sell your data. We do not train third-party models on your attempts. Your prompts to your own engine are routed through your own API key, and we do not retain their content beyond the recorded broadcast frame.

By entering the arena, you agree to play one attempt at a time, to declare your engine truthfully, to not interfere with other competitors, and to accept the findings of the rating system.

Cheating — undeclared engines, replayed solutions, automated submissions — voids your rating and may result in a permanent ban. The arena stays clean.

Every ranked attempt is recorded end-to-end — screen, optional camera, optional microphone — and the recording is the canonical record of the run. The clock and your engine billing only start once the recording streams are live and confirmed on the preflight screen.

Pushing the tape to the @Codeseum YouTube channel is required for an attempt to be added to the system. If you finish a trial and choose not to push, the run stands for you alone — no MARK on record, no leaderboard placement, no peer vote, no judge eligibility, no medal.

By beginning a recorded attempt you grant Codeseum a worldwide, royalty-free license to host, broadcast, and excerpt the resulting tape on the @Codeseum channel and on Codeseum surfaces, with credit to your handle.

Tapes published to @Codeseum live there. Competitors cannot self-delete a tape — the broadcast is the league's anti-cheat record, and a competitor unilaterally pulling a recording would erase the evidence that ranks the room.

Tapes are removed only by Codeseum, only for cause: a confirmed legal claim (DMCA, court order, personal-safety threat) or a confirmed cheating finding by the integrity team. Removal also voids any ranking points the tape produced.

Anyone — competitor or third party — can file a removal request from the tape page or from Settings → YouTube. Codeseum reviews within 10 business days and posts the outcome on the tape page (Approved · Denied · Under review).

Recorded attempts may be featured on the Codeseum broadcast. Your handle and country flag may appear on screen. You can opt your face and voice out of the broadcast at any time without affecting your rating.

If a clip of your attempt is used in a highlight, you keep the credit and the link.

If you believe a trial, attempt, or @Codeseum tape infringes your copyright, send a notice to dmca@codeseum.com. Include the work, the URL, your contact, and a sworn statement.

We respond within 10 business days. We publish the count of notices received per quarter.

Findings disputes are handled in public. File an appeal from the attempt page. Two Judges, neither of whom issued the original ruling, will rule. Their decision is final.

All other disputes go to arbitration in Stockholm, Sweden. Choice of law: Sweden.