SOL JACK · Provably Fair Blackjack on Solana

SOL JACK

PROVABLY FAIR · SOLANA

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Select your table

Token

Deck

Bet

HOUSE RULES

FAIRNESS

Each round, the server commits a hash of its seed before dealing. Your client seed and a per-round nonce drive a Fisher-Yates shuffle via HMAC-SHA256. After the round, the server reveals its seed — verify with one click.

SOL JACK PAYS 3 TO 2

DEALER MUST DRAW TO 16 AND STAND ON ALL 17

DEALER

YOU

THIS ROUND

Bet—

Token—

Dealer—

Your hand—

Status—

MOVE LOG

YOUR LOG

admin · SOL JACK — house always shows its work

INSURANCE?

Dealer is showing an Ace. Insurance costs half your bet and pays 2:1 if the dealer has blackjack.

VERIFY THIS HAND

Server seed (revealed)

Server seed hash (pre-committed)

Client seed

Nonce