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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? Inspect owner evidence, practice the market flow, and join the collector read before the final PSA result is revealed.

Evidence helps collectors form an opinion. The final PSA result resolves the event.

View preview cards

PRACTICE SIGNAL

Featured read appears when a card is selected.

Preview of how BTS practice picks form a public collector read.

Awaiting first read

BTS practice read

Collector readUnavailable

No featured card is selected for the landing hero.

Preview of how the collector read appears as picks come in.

Select a featured BTS event to see the collector read.

Market lobbyPreparing

First preview cards are being queued

Owner evidence and community picks will appear here as events open.

Owner evidencePicks open laterPractice market

Predict the Grade

PSA 8 or lower
YESNO
PSA 9
YESNO
PSA 10
YESNO
No grade revealed
YESNO

Collector pulse

Collector pulse

Activity appears here when collectors record public BTS positions.

Activity appears here when collectors record public BTS positions.
Cards with evidence soonMarkets open soonEvent discussion ready

BTS practice activity is public by default. $JKB has no cash value.

Live board

Browse open and past PSA reveal practice markets.

Loading the board...

Checking public PSA reveal prediction events.

How it works

How it works

Practice $JKB only. No cash value, no withdrawals, and no redemption into marketplace funds.

Step 1

Pick an outcome

Use practice $JKB to take a simulated position on the card's final PSA bucket.

Step 2

Preview, then trade

Quote preview is read-only; confirmed trades update your projected practice position.

Step 3

Settle or void

Reviewed evidence settles PSA 1-8 to PSA 8 or lower, PSA 9, or PSA 10. Non-grade outcomes can void and refund remaining projected cost basis.

Why Before the Slab exists

Why Before the Slab exists

Raw-card speculation already happens in DMs, group chats, and comment sections. Before the Slab gives that behavior a public surface: evidence, community picks, discussion, activity, and a final reveal.

The goal is not to predict for collectors. The goal is to make the collector read visible before the slab comes back.

Join the collector read

Want to join the first BTS markets?

Create an account to claim practice $JKB, inspect preview events, and follow the collector read as it forms.