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VERIFIED PAPER CASE · 15 MIN

BTC 15-Minute Signal Post-Mortem: +85.08 pp Edge

Bitcoin Up or Down - July 28, 3:00PM-3:15PM ET

POLYMARKET ENTRY73.5%13.6% EXECUTABLE
MARX FAIR AT ENTRY0.0%HISTORICAL · CLOSED
MODELED EDGE+85.08 ppNET AT ENTRY
CONFIDENCE83.3%DOWN UNDERPRICED
RETURN-100.0%SIMULATED
ROUND REPLAY

Interactive Polymarket vs Marx Fair divergence

Market UP 100.0%Marx Fair UP 100.0%
Market UP and Marx Fair UP history0255075100
Jul 28, 07:00 PMJul 28, 07:04 PMJul 28, 07:09 PMJul 28, 07:13 PMJul 28, 07:17 PM UTC

Market UP and Marx Fair UP history

Text equivalent of the chart
TimePolymarketMarx FairEdge
2026-07-28T19:00:40.556Z73.5%0.0%-73.5 pp
2026-07-28T19:01:18.508Z73.5%0.0%-73.5 pp
2026-07-28T19:01:38.453Z73.5%0.0%-73.5 pp
2026-07-28T19:02:42.393Z73.5%0.0%-73.5 pp
2026-07-28T19:03:43.108Z90.5%0.0%-90.5 pp
2026-07-28T19:04:40.992Z90.5%0.0%-90.5 pp
2026-07-28T19:05:41.325Z92.5%0.0%-92.5 pp
2026-07-28T19:06:40.200Z61.5%0.0%-61.5 pp
2026-07-28T19:09:40.632Z61.5%0.0%-61.5 pp
2026-07-28T19:10:38.752Z95.5%0.0%-95.5 pp
2026-07-28T19:12:46.165Z95.5%0.0%-95.5 pp
2026-07-28T19:13:54.963Z93.5%0.0%-93.5 pp
2026-07-28T19:14:41.879Z93.5%0.0%-93.5 pp
2026-07-28T19:15:38.931Z100.0%0.0%-99.9 pp
2026-07-28T19:16:20.942Z100.0%0.0%-99.9 pp
2026-07-28T19:16:40.203Z100.0%0.0%-99.9 pp
2026-07-28T19:17:16.012Z100.0%100.0%+0.0 pp
2026-07-28T19:17:44.653Z100.0%100.0%-0.0 pp
AUDIT TRAIL

Signal breakdown and trigger

  • Marx Fair was 0.0% while the Polymarket UP price was 73.5%.
  • The executable DOWN entry was 13.6¢ with a net modeled edge of 85.1 percentage points.
  • Model confidence at the signal was 83.3%.
  • Observed order-book spread at entry was 1.0¢.
MODEL NOTE

Marx AI inference

Buy DOWN: $100 VWAP 13.6%, gross edge 87.0%, slippage 0.6%, fee 0.8%, safety 0.5%, net edge 85.1%. Marx fair UP is 0.0%.

BTC 15-Minute Signal Post-Mortem: +85.08 pp Edge | AntiPredict