Polymarket and Kalshi evidence: Prediction markets,
on the record.

Evidence built from our independent record of prediction markets, for four kinds of business: exchanges and brokers; funds, desks and trading apps; integrity, legal and policy; and data tools and media. Each has its own page and its own packages. None of them is a trading signal, a tip or advice on what to trade.

Polymarket and Kalshi markets from late 2025 (Kalshi from January 2026), whatever the topic. Every source we hold or license is graded: ground truth (our own esports capture, settled outcomes), verified (Polymarket fills from the chain, and licensed history that matched our capture) or unverified (licensed history with nothing to check it against). Before any work starts, we confirm which sources cover your markets.

Our founder trades esports prediction markets on his own account. 21Core itself does not trade. So we keep a wall: we never write a Case File, an Incentive Audit or any other report on a market he traded, or on an incentive program that rewarded him, in the period it covers, and the body that commissions one can have his wallet addresses under NDA to check. For esports strategies we offer the Log audit only.

No. We hold no client capital, accept no deposits, route no orders for anyone and are not an investment adviser. 21Core is independent of Polymarket, Kalshi, every league and every game publisher, and sells to businesses only.

Every engagement starts with a 15-minute call. For a trading strategy, the next step is the check: $3,000 per strategy, the verdict in 5 working days. Everything else goes on to a paid two-week Diagnostic, credited in full if you go ahead within 60 days, and we quote prices on the call.