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Degen Protocol
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Session against the house

Blackjack

ended: idle Play money · da05654f11ab35178f66ec04aa9503aa

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
0
Wagered
0 play
Returned
0 play
Bettor's net
0 play
Return
–

Results by hand

Final
Hands
0
played
Pace
–
overall –
Biggest swing
–

Each seat's running result in play, hand by hand.

SeatNetRateStreak
gbb0––

Last hands

    Each hand shows here as it ends.

    The hands

    Newest first

    No hand has been played yet.

    Provably fair

    Verify fairness

    The session's seed decides every card. Its hash was committed before the first hand; the seed is revealed when the session ends. Each round's cards come from HMAC-SHA256 keyed by the seed over the round's number and the bettor's own seed.

    Seed hash
    0f1d4bec31f6e45de58491f77d8e28832a065f64cbf5b5cdc925edd10cb7dfe7
    Seed
    013cd3815ce5f45ed4d5a9772d2c04a68fae1c466c37b5580ec6ffaef3f0316a SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
    Bettor's seed
    None: the bettor chose none.
    Commitment
    Batch 64,792, Merkle root d0bb2bf22b04a7964a53a8904b227f589fb0ab5ca7e22dbc91bf51d0bcd6fade. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
    Merkle path
    1. d66830c20b64520a982eaf54415162fc4170c53470a15b40a7b0e58d2b88356e
    2. 1837091c91f63c5e735ecbd789da5e3af4b3c8d2253c3bd4037abb0da614eb2d
    3. 929fa242a1472e350d6d3aee04e8f6f0a5e971d2b9e44b5bf48cc98c438c92b8
    4. 594b5ec7f81f7dc1968ec463f5acea86aa338e00d0dd0d91f613d57d23ad324c
    5. 0e56c2ba6f7da108d8ce08fe14caf94f443124392e8800c5c895d8d7a59c12ef
    6. 49bb44bf07e544ab382e2170722ecbeefafa92a7dab49e9db108e77fcff410ba
    Checked: the seed hash proves into the root.

    To check it yourself, take the session's proof:

    1. Hash the seed as above and compare it with the seed hash; prove the seed hash into the root with the Merkle path (keccak256, as for every match).
    2. For each round: round seed = HMAC-SHA256(key = seed, "degen.house.round.v1" ‖ 0x00 ‖ u64be(length of the bettor's seed) ‖ bettor's seed ‖ u64be(round)).
    3. Key ChaCha20 (RFC 8439, zero nonce) with the round seed and read little-endian 64-bit words; a card is the next word below 264 − 1 − ((264 − 1) mod 52), modulo 52.
    4. Replay the round's actions with the game's rules: the cards and the payout must match.

    The replay plays every hand rebuilt this way on the server from the same data, and marks any that does not rebuild as recorded.