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Degen Protocol USDC · ETHBase Sepolia · testnet
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Session against the house

Blackjack

Play moneyended

3f688312c5948be9768506317df7d38e

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
    e8a850414dc160ab9aef71d5065b6ad65faa5aa3d5005614c60429c940b69dc2
    Seed
    c77ad48b4b311d14a2729b944f8a4d8fbb1da88dbc719bebcbb07930393ebedd 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 57,112, Merkle root 9e2024c9c7007335e72657d552e51dd4a74138ea0504fb7d2131511424615589. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
    Merkle path
    1. ec867c38295718606d0c0ccf6e109f1a1fd773f154bcf8ad4fa20ed4d7feffeb
    2. 39ae96233c359dbb15967a7689842cb9d0cfe938431fdc63c217a188753203f4
    3. 1b2481853d797b3892b29f457a66470094d2638696a7235ec58231e8b1c19924
    4. 8983cae76641697481d2f6a07ff1c381e625ee8d18da86036d20dcb26e6a05b3
    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.