Provably Fair

Every shuffle is generated from an unbiased HMAC-SHA256 byte stream keyed by the server seed and messaged with clientSeed:nonce:cursor. The server seed is committed as a SHA-256 hash before play; rotating reveals the original so you can independently reproduce every deal.

Current server seed hash (commitment)

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Client seed

Nonce advances with each round. Current: 0

Independent hash check

Paste any string to get its SHA-256. Verify a revealed server seed matches its committed hash from earlier rounds.