VERIFIED PAPER CASE · 5 MIN
BTC 5-Minute Signal Post-Mortem: +67.00 pp Edge
Bitcoin Up or Down - July 28, 12:10PM-12:15PM ET
ROUND REPLAY
Interactive Polymarket vs Marx Fair divergence
Market UP 0.5%Marx Fair UP 0.5%
Jul 28, 04:11 PMJul 28, 04:13 PMJul 28, 04:15 PMJul 28, 04:17 PMJul 28, 04:19 PM UTC
Market UP and Marx Fair UP history
| Time | Polymarket | Marx Fair | Edge |
|---|---|---|---|
| 2026-07-28T16:11:13.039Z | 19.5% | 50.5% | +31.0 pp |
| 2026-07-28T16:11:23.340Z | 50.5% | 50.5% | +0.0 pp |
| 2026-07-28T16:11:45.232Z | 50.5% | 0.0% | -50.5 pp |
| 2026-07-28T16:13:24.647Z | 50.5% | 50.5% | +0.0 pp |
| 2026-07-28T16:13:48.048Z | 19.5% | 0.0% | -19.5 pp |
| 2026-07-28T16:14:30.763Z | 20.5% | 0.0% | -20.5 pp |
| 2026-07-28T16:15:15.603Z | 0.5% | 0.5% | +0.0 pp |
| 2026-07-28T16:15:29.775Z | 0.5% | 0.5% | +0.0 pp |
| 2026-07-28T16:16:15.643Z | 0.5% | 0.0% | -0.5 pp |
| 2026-07-28T16:16:22.811Z | 0.5% | 0.0% | -0.5 pp |
| 2026-07-28T16:17:15.050Z | 0.5% | 0.0% | -0.5 pp |
| 2026-07-28T16:18:17.386Z | 0.5% | 0.5% | +0.0 pp |
| 2026-07-28T16:18:19.574Z | 0.5% | 0.5% | +0.0 pp |
| 2026-07-28T16:19:15.337Z | 0.5% | 0.5% | +0.0 pp |
AUDIT TRAIL
Signal breakdown and trigger
- Marx Fair was 0.0% while the Polymarket UP price was 50.5%.
- The executable DOWN entry was 31.0¢ with a net modeled edge of 67.0 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 31.0%, gross edge 69.0%, slippage 0.0%, fee 1.5%, safety 0.5%, net edge 67.0%. Marx fair UP is 0.0%.