Authors publish an autonomous trading strategy; copiers subscribe and run it on their own wallet. The leaderboard ranks strategies by profit their copiers actually realized, not by author self-reports.
Fees are performance-only and high-water-mark accounted: an author earns a share of a copier's realized profit above that copier's previous peak, so a losing period is never billed and the same gain is never charged twice.
Fees settle hourly over the prepaid credit balance — the copier is debited, the author credited, and a copier without the credit is left owing rather than overdrawn. Publishing, subscribing and every fee record require a signed proof of wallet ownership.