What each metric covers, and what it misses

**Unique users** cover on-chain venues only — Polymarket, Limitless, Predict and the on-chain venues inside Other. Kalshi, Crypto.com, Polymarket US and Novig do not publish user counts, so they are absent from that tile rather than estimated. Users cannot be added across days: the same account trading on Monday and Tuesday is one user, not two. So the 7-day figure is the latest complete calendar week and the 30-day figure the latest complete calendar month, both straight from the source. No all-time figure is shown. **Open interest** is a stock, not a flow, so every window shows the latest value rather than a sum. Crypto.com does not report it. No wash-trading filter is applied by the source.