Cascade autopsy: BTC, 2026-09-18 - $391.1M liquidated (n=9,977 tape events)

On 2026-09-18, our multi-venue tape recorded a BTC cascade: $391.1M in forced closes over 15 minutes (n=9,977 raw tape events in our own capture, not the whole market).

The liquidation map snapshot published 4 minutes before the start showed 28 levels; 21 were reached inside the cascade's traded range (n=28 levels, Wilson 95% lower bound 57%). Misses are shown at equal weight in the full autopsy.

The measured record as published that day: walk-forward precision 51.7% [Wilson 95% lower bound 29.4%], n=16 day-clusters.

Full re-verified anatomy (minute-by-minute timeline, before-map, venue breakdown): https://hunterkiller.io/autopsy/2026-09-18T1338-BTC

Descriptive record of a past event - not a forecast and not a trade signal.