Verify a case
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What is being checked
Before a case goes live we publish a commitment: a hash that locks in the exact set of cards and the secret seed that orders them. After the case sells out or is retired we reveal the seed. With the seed and the card list you can recompute the commitment, the shuffle and every buyer's slot pick. How commit-reveal works has the plain-English version and the formulas.
Before a case is revealed
Only the commitment binding can be checked (that the published hashes really produce the published commitment). That is by design: revealing the seed early would reveal which slot holds which card.