Audit any address.

Paste a Polymarket wallet or a TAIL handle. You get the record TAIL can actually stand behind: a calibration grade, the checks that grade had to pass, the integrity flags on the row, and every resolved receipt underneath — losses included, nothing withheld, no account needed.

Sample cast@nqwizard0x4f2a…e91d

What the grade is

The grade runs 0–100 and is a rendering of the §7.3 calibration number, not a second opinion about it: 50 × (calibration + 1), rounded. Calibration runs −1 to 1 on a published formula, so the grade inverts back to it exactly and weights nothing — 50 is coin-flip pricing and 100 is perfect. The bands below are cut points on that grade, the number every screen prints. It renders the calibration rather than the score because the score (§7.2) is unbounded — banding it would invent a scale nobody published. All three formulas are on the methodology page.

• A≥ 85prices sharply, well clear of coin-flip noise
• B≥ 78consistently better priced than the market
• C≥ 70better than coin-flip, with room in it
• D> 50barely above coin-flip pricing
• F≤ 50at or below coin-flip pricing

Under 25 resolved markets there is no grade at all — not an F. §7.1 will not rank a record that thin and §7.3 will not take a Brier mean from it, so the honest output is the record with the letter withheld.

What gets flagged

Integrity flags are computed with the stats (§7.4). A flagged record keeps its badge and its receipts — flags mean “under review”, never silent deletion.

• parlay_noisemulti-leg/combinatorial fills, excluded from score and shown separately
• wash_suspectoffsetting buy/sell in the same market inside two minutes, repeated
• anomalystake size more than 10× the trailing median