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Bitcoin 15-Minute hub
VERIFIED PAPER CASE · 15 MIN

BTC 15-Minute Signal Post-Mortem: +11.15 pp Edge

Bitcoin Up or Down - July 27, 11:30PM-11:45PM ET

POLYMARKET ENTRY50.5%51.0% EXECUTABLE
MARX FAIR AT ENTRY64.4%HISTORICAL · CLOSED
MODELED EDGE+11.15 ppNET AT ENTRY
CONFIDENCE83.3%UP UNDERPRICED
RETURN-10.1%SIMULATED
ROUND REPLAY

Interactive Polymarket vs Marx Fair divergence

Market UP 100.0%Marx Fair UP 90.0%
Market UP and Marx Fair UP history0255075100
Jul 28, 03:31 AMJul 28, 03:36 AMJul 28, 03:40 AMJul 28, 03:45 AMJul 28, 03:49 AM UTC

Market UP and Marx Fair UP history

Text equivalent of the chart
TimePolymarketMarx FairEdge
2026-07-28T03:31:30.920Z40.5%81.5%+41.0 pp
2026-07-28T03:32:30.943Z40.5%81.5%+41.0 pp
2026-07-28T03:33:32.291Z60.5%81.5%+21.0 pp
2026-07-28T03:34:30.900Z66.5%81.5%+15.0 pp
2026-07-28T03:35:30.930Z59.5%81.5%+22.0 pp
2026-07-28T03:36:30.797Z59.5%81.5%+22.0 pp
2026-07-28T03:37:48.368Z60.5%81.5%+21.0 pp
2026-07-28T03:38:54.330Z81.5%81.5%+0.0 pp
2026-07-28T03:39:30.975Z81.5%81.5%+0.0 pp
2026-07-28T03:39:34.952Z81.5%81.5%+0.0 pp
2026-07-28T03:40:00.414Z81.5%0.0%-81.5 pp
2026-07-28T03:40:30.829Z85.5%0.0%-85.5 pp
2026-07-28T03:41:30.871Z85.5%0.0%-85.5 pp
2026-07-28T03:42:30.814Z85.5%0.0%-85.5 pp
2026-07-28T03:43:30.780Z85.5%0.0%-85.5 pp
2026-07-28T03:44:30.817Z99.9%100.0%+0.1 pp
2026-07-28T03:45:30.801Z100.0%100.0%+0.0 pp
2026-07-28T03:47:36.075Z100.0%100.0%+0.0 pp
2026-07-28T03:49:35.114Z100.0%90.0%-10.0 pp
AUDIT TRAIL

Signal breakdown and trigger

  • Marx Fair was 64.4% while the Polymarket UP price was 50.5%.
  • The executable UP entry was 51.0¢ with a net modeled edge of 11.2 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 UP: $100 VWAP 51.0%, gross edge 12.5%, slippage 0.0%, fee 1.7%, safety 0.5%, net edge 10.2%. Marx fair UP is 63.5%.

BTC 15-Minute Signal Post-Mortem: +11.15 pp Edge | AntiPredict