Which moves are surprising for that particular coin — not merely large.
A 10% day is ordinary for some coins and extraordinary for others; dividing by the coin's own typical move is what makes them comparable.
Sigma comes from each coin's own recent history. A coin whose volatility regime just shifted can read as ordinary or extraordinary until the window catches up.
An anomaly says a move is unusual for that coin. It does not say the move is important, durable, or about to continue in either direction.
Volume sits beside every move so a thin-printed spike is visible as one — but the radar reads spot markets, not derivatives positioning or on-chain flows.
Open crypto anomaly radar →It ranks by how unusual a move is for that coin, not by size.
The coin's typical daily move over a recent window.
It flags something unusual; it does not say which way it resolves.
If 30% is a normal day for that coin, it is not anomalous — the board ranks surprise, not size.
A recent rolling window over the coin's own daily returns; the board shows the move and its volume so a thin spike is visible as one.