BTC Cowen Corridor
LockedTight log-regression channel — fair-value envelope around the long-run trend.
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What this chart shows
Methodology
Linear regression of log10(BTC close) vs. day-index (full history since 2011-08 — Bitstamp pre-2014, Yahoo from 2014-09 onward). Cowen-style corridor places bands at ±0.2 and ±0.5 in log10 space around the fit — tighter than the rainbow (±0.4 / ±0.8). Price drifting outside the outer corridor flags 'over/under-extended vs trend'.