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

Blackjack

Play moneyended

3e14be2a9ea01b3b5d401b556c9b77c8

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,240 play
Returned
2,380 play
Bettor's net
+140 play
Return
106.25%

Results by hand

Final
Hands
200
played
Pace
18.4/min
overall 19.0/min
Biggest swing
+50
Seat 1 · hand 125

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

SeatNetRateStreak
gbb+140+70.0 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
5010K♦K♣ 208♣5♣8♥ 21202× the bet
49102♥J♣ 12K♠A♠ 21 blackjack252.5945× the bet
4810A♥Q♥ 212♣A♥ 1300× the bet
4710Q♠4♣ 143♣9♥Q♥ 22 bust00× the bet
4610Q♠A♦ 21Q♣4♣ 1400× the bet
451010♠10♠ 20Q♠2♦10♦ 22 bust00× the bet
4410J♦J♥ 203♠Q♠Q♣ 23 bust00× the bet
4310A♥10♦ 21K♣K♥ 2000× the bet
4210Q♣5♦7♣ 226♥7♠A♥4♥ 18202× the bet
4110K♠J♠ 20J♣K♥ 20101× the bet
40108♣10♥ 18J♦6♣7♣ 23 bust00× the bet
39107♦6♣ 135♦10♠K♥ 25 bust00× the bet
381010♠4♥ 14J♦A♥ 21 blackjack252.5945× the bet
37103♠A♦6♣ 202♦10♣8♦ 20101× the bet
36105♥A♠A♣ 177♦K♣ 17101× the bet
35107♣9♥6♥ 2210♦Q♥ 20202× the bet
34109♠K♣ 195♥A♣J♠2♥ 1800× the bet
3310A♠3♥ 14A♣Q♣ 21 blackjack252.5945× the bet
32102♥5♠3♥8♠ 188♠9♥ 178♣K♠ 188♠7♣ 15101× the bet
311010♦8♦ 182♥8♠K♠ 20202× the bet
3010A♠7♠ 182♠Q♠3♦Q♥ 25 bust00× the bet
29103♣K♣6♦ 19J♣10♥ 20202× the bet
28103♦K♠J♣ 232♥6♦9♦ 17202× the bet
2710K♣2♣ 1210♦3♣K♦ 23 bust00× the bet
2610Q♠7♦ 179♥J♠ 19202× the bet
2510A♣6♠ 17A♣7♣4♠6♠ 18202× the bet
24109♠J♦ 19Q♣A♦ 21 blackjack252.5945× the bet
23106♣4♥J♥ 20K♣7♣ 1700× the bet
22104♣Q♠8♠ 22J♥4♠ 14202× the bet
2110A♦A♣5♣ 178♥J♥ 188♣10♠ 18404× the bet
20109♣5♥10♠ 243♣5♠5♠6♥ 19202× the bet
19103♦10♥6♥ 193♥A♣A♣6♠ 21202× the bet
18108♣A♥ 19J♦6♦7♥ 23 bust00× the bet
17103♦10♥J♣ 239♠A♥ 20202× the bet
16105♦5♠4♥K♠ 247♦8♦ 15202× the bet
15104♠4♠9♣ 175♥A♣A♦ 17 doubled202× the bet
141010♥3♣J♦ 232♥K♦5♥ 17202× the bet
13108♦9♦ 17Q♠9♦ 19202× the bet
1210Q♦4♥ 14K♦5♠ 15 surrendered50.5× the bet
11105♣5♦Q♣ 202♦A♦6♦ 1900× the bet
10109♥J♥ 19J♥3♥Q♠ 23 bust00× the bet
9108♦9♣ 179♠5♥A♣10♥ 25 bust00× the bet
8109♠9♥ 183♣3♠6♥6♥ 18101× the bet
7106♥8♣9♦ 239♥K♦ 19202× the bet
610A♦6♦ 17J♠7♠ 17101× the bet
5108♥8♠ 162♣K♥3♥8♠ 23 bust00× the bet
410K♥5♥A♠5♦ 21J♣J♥ 2000× the bet
3103♣9♦8♥ 203♦8♥2♦ 13 doubled00× the bet
210J♦10♠ 202♥K♥10♥ 22 bust00× the bet
1109♠J♥ 19K♦3♣7♠ 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
9812ad9f18ad39adb1b17cf92b78bab31a1eac3a92cf586ebd4d926f4d834056
Seed
66f92aa14ac9cb5da228d0ea42b64d918d9d469447108a1421141b5739344341 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
656a0d1f4531aa1af78b888e4b592d9c
Commitment
Batch 54,727, Merkle root 38619a502d9f3cb02606c710ad77a04a6ed0316c205175734af6294bdc767def. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 6447421aaf2fd2907b6600af2307f99e1909f79304b633dd6cfaa5605dd14e2c
  2. 01bd1f1fb2ff4beedb393986ed6aaa474422b2a12e50af25a515701f4c4947dc
  3. 3c065ba2924c63ff463d7463b6a756270fa54c04d7959097fb8845bc172d3b66
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.