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Beta Release: JK Index is in active development. Data coverage is expanding and you may see gaps or inconsistencies as we iterate. Feedback is welcome.

PSA reveal prediction

Before the Slab

Before the Slab asks one question: What PSA grade will this card receive? Owner photos help collectors form an opinion before the slab comes back. The reveal resolves from the final PSA result, not from JK predicting the grade.

Evidence helps collectors form an opinion. It is not the resolution source. No payout in this version.

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Public board

Browse live and past PSA reveal prediction events.

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Checking public PSA reveal prediction events.

How it works

Free community picks before the reveal

Step 1

Owner uploads evidence

The event owner uploads front and back photos of the actual raw card.

Step 2

Admin review

JK reviews the event for public display before predictions open.

Step 3

Community picks

Collectors make a free pick on the PSA outcome.

Step 4

Prediction window closes

Picks close before the reveal.

Step 5

Result is resolved

The event resolves when the PSA result is reported or verified in a future flow.

No payout in this version. JK does not predict the grade of any copy. Catalog images are reference only when owner evidence is unavailable.