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

Blackjack

Play moneyended

6342b3a95c0f3715374b560bb1523133

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,330 play
Returned
2,405 play
Bettor's net
+75 play
Return
103.22%

Results by hand

Final
Hands
200
played
Pace
20.0/min
overall 20.4/min
Biggest swing
+40
Seat 1 · hand 24

Each seat's running result in play, hand by hand; the dashed line marks the biggest swing.

SeatNetRateStreak
gbb+75+37.5 play/100won 2

Last hands

  1. 200Seat 1+10
  2. 199Seat 1+10
  3. 198Even0
  4. 197Even0
  5. 196Even0
  6. 195Even0
  7. 194Seat 1+10
  8. 193Even0
  9. 192Even0
  10. 191Even0
  11. 190Even0
  12. 189Even0

The hands

Newest first
#BetDealerHandsPaidChecked
100103♥5♠7♠6♣ 21A♣3♠K♠ 1400× the bet
99104♠9♠A♠J♥ 242♦7♣K♦ 19 doubled404× the bet
98103♥5♦6♦10♥ 245♠3♠5♠ 13202× the bet
97105♥4♦K♦ 195♥3♠6♦ 1400× the bet
961010♣7♦ 1710♥A♣ 21 blackjack252.5945× the bet
95107♠5♠5♠ 17A♥3♣Q♠3♦ 17101× the bet
9410J♣4♦4♠ 18K♣J♣ 20202× the bet
93105♦10♥A♠J♥ 268♠3♥9♣ 20 doubled404× the bet
92104♣K♣J♥ 249♠2♣5♠ 16 doubled404× the bet
91107♣Q♥ 178♥A♥ 19202× the bet
90104♥9♣8♠ 21Q♣3♣ 1300× the bet
89102♥3♥2♠8♣9♠ 248♣7♥ 158♥K♦ 18404× the bet
88104♠A♥8♠8♦ 214♦7♣K♠ 21 doubled202× the bet
87102♥10♠A♣2♣5♥ 206♠9♣ 1500× the bet
86104♥5♠A♦ 205♦A♦7♠ 13 doubled00× the bet
85104♠J♦7♥ 213♦K♠ 1300× the bet
84103♥Q♠2♦Q♦ 255♠8♣ 13202× the bet
8310Q♦5♣ 153♠5♣5♣10♥ 23 bust00× the bet
8210A♠K♥ 217♦4♦ 1100× the bet
8110A♠7♠ 18K♦A♦ 21 blackjack252.5945× the bet
80107♠Q♦ 176♦5♣8♥ 19 doubled404× the bet
7910J♣Q♠ 202♥6♠6♥K♦ 24 bust00× the bet
78106♣5♠8♣ 197♦3♠8♠ 18 doubled00× the bet
77104♣4♠Q♥ 187♥6♣ 1300× the bet
7610J♥4♦2♥4♦ 204♦5♥10♥ 1900× the bet
75106♣9♣Q♦ 25J♣5♦ 15202× the bet
74103♣8♥Q♣ 21A♣8♠ 19A♠2♠ 1300× the bet
73103♥5♥6♠9♣ 232♦6♣K♣ 18202× the bet
72107♣A♥ 18A♣4♠3♦ 18101× the bet
71102♣5♣4♠3♦7♠ 216♠Q♣ 1600× the bet
7010K♦2♠ 12J♥6♠ 16 surrendered50.5× the bet
691010♣A♠ 213♥5♥ 800× the bet
68107♥5♠10♣ 2210♥6♣4♠ 20202× the bet
6710J♥Q♠ 206♣5♦J♥ 21 doubled404× the bet
66104♥7♣6♣ 179♠Q♦ 19202× the bet
65102♥6♠Q♣ 18J♦10♥ 20202× the bet
64108♣A♥ 196♦5♦7♠ 18 doubled00× the bet
6310Q♠10♠ 204♥7♠10♦ 21 doubled404× the bet
62109♣3♠ 12Q♠A♦ 21 blackjack252.5945× the bet
6110Q♥Q♦ 206♠K♥ 16 surrendered50.5× the bet
6010J♥10♦ 203♣Q♦10♥ 23 bust00× the bet
59106♠10♥10♠ 262♥A♦9♠ 12 doubled2♠10♣ 12606× the bet
58107♣K♥ 175♦A♣8♥K♦ 24 bust00× the bet
571010♣9♥ 19A♦8♣ 19101× the bet
5610J♦K♠ 205♠K♥ 15 surrendered50.5× the bet
5510J♦7♥ 178♦3♦4♠ 15 doubled00× the bet
541010♦9♠ 19A♠Q♦ 21 blackjack252.5945× the bet
53109♣8♠ 177♦A♣Q♠ 18202× the bet
52103♥2♣3♥4♠8♠ 209♦6♦ 1500× the bet
51105♠8♠3♦10♦ 26J♣10♠ 20202× the bet

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
b80ae398c74d8aebe6e12095e3ccc6534132d2b5713b980936a6a9a7f90e861f
Seed
63027bf889372ade826f94beb40fa3dde774ccbbc17e2377d92c099537b9cdfe SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
ed1d168da5f9019cba848362da098d58
Commitment
Batch 55,532, Merkle root 7b25461c56db93e0d21857224d35f8abe895fefc358c618475c55e74da168f1e. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. de7c9ecdd53b474c4c8b478ba0b7eb561e497a1109778fd8c962d265ac33b78a
  2. 9ae1fff63419414a0f59fcdb0d5b48568452eecdb1c029f3704d1d3a9ce8e390
  3. 2f338ed8ffa614c865318f8e249057d8ef31ba5234b81345fd6eb7300f23396f
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.