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

Blackjack

Play moneyended

6e731b4f19feeb3feeeebce75fcf9b1c

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,340 play
Returned
2,105 play
Bettor's net
-235 play
Return
89.96%

Results by hand

Final
Hands
200
played
Pace
20.9/min
overall 20.5/min
Biggest swing
-20
Seat 1 · hand 3

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

SeatNetRateStreak
gbb-235-117.5 play/100lost 2

Last hands

  1. 200Even0
  2. 199Even0
  3. 198Seat 1+10
  4. 197Even0
  5. 196Seat 1+15
  6. 195Even0
  7. 194Even0
  8. 193Even0
  9. 192Seat 1+10
  10. 191Even0
  11. 190Seat 1+15
  12. 189Even0

The hands

Newest first
#BetDealerHandsPaidChecked
5010Q♣2♠ 129♦5♦J♣ 24 bust00× the bet
4910J♣5♣J♥ 258♦J♠ 18202× the bet
4810J♣Q♠ 20J♥2♥K♠ 22 bust00× the bet
47107♥Q♦ 17A♣Q♦ 21A♥10♠ 21404× the bet
46102♦Q♠7♦ 197♣K♠ 1700× the bet
45104♣Q♥10♣ 247♣6♣ 13202× the bet
44108♦3♣2♦A♦J♠ 243♣7♦8♦ 18 doubled404× the bet
43103♠8♥8♥ 19K♣Q♣ 20202× the bet
4210Q♥7♥ 1710♣Q♥ 20202× the bet
41103♣2♦2♠10♠ 172♥8♣Q♦ 20 doubled404× the bet
40103♠J♣4♠ 17K♣5♣ 1500× the bet
3910Q♦5♠ 155♣K♠ 15 surrendered50.5× the bet
3810K♣3♦7♦ 206♣3♠K♣ 1900× the bet
37106♦3♣2♦J♠ 21Q♥8♥ 1800× the bet
36102♠5♣J♦ 172♦J♠6♥ 18202× the bet
35107♦5♣4♠7♠ 239♠9♥ 18202× the bet
34106♥10♣5♥ 21K♣J♣ 2000× the bet
3310K♥5♦6♦ 21J♠10♦ 2000× the bet
321010♠Q♠ 209♣J♣ 1900× the bet
31107♥8♦ 155♠K♣10♣ 25 bust00× the bet
301010♣6♠ 165♥9♣J♠ 24 bust00× the bet
2910A♣Q♥ 21A♠8♠ 1900× the bet
2810J♣6♠8♠ 242♥6♠8♦3♦ 19202× the bet
2710J♥6♥3♠ 197♣10♥ 1700× the bet
2610Q♦2♦J♦ 224♦4♣J♦ 18202× the bet
2510J♦8♥ 187♣8♦ 15 surrendered50.5× the bet
24103♠8♦J♥ 218♠10♦ 1800× the bet
23103♥K♣9♥ 226♣10♠ 16202× the bet
22105♦K♥2♥ 176♣9♥ 1500× the bet
2110Q♦A♣ 212♣5♠ 700× the bet
201010♣2♥ 12J♣A♣ 21 blackjack252.5945× the bet
19104♠A♦A♥10♥3♦ 193♦2♠9♦ 1400× the bet
18102♣8♠A♥ 212♥J♦2♦ 1400× the bet
17109♥A♣ 205♥9♥A♥8♦ 23 bust00× the bet
161010♥A♠ 217♥Q♠ 1700× the bet
151010♥3♥ 139♥7♠ 16 surrendered50.5× the bet
1410J♦4♣ 14K♥6♣ 16 surrendered50.5× the bet
13109♣Q♦ 19Q♣A♦ 21 blackjack252.5945× the bet
1210K♦8♦ 182♠9♠5♥ 16 doubled00× the bet
1110Q♥6♣J♦ 264♦4♥3♣10♠ 21202× the bet
10105♦K♥2♠ 174♦3♣4♣8♣ 19202× the bet
9106♣5♣J♦ 214♥5♣J♦ 19 doubled00× the bet
8108♦3♣6♠ 175♣8♠8♦ 21202× the bet
7106♦8♣ 1410♥A♦ 21 blackjack252.5945× the bet
6106♥J♠7♣ 234♦A♣Q♣ 15 doubled404× the bet
5107♠A♠ 188♠3♠Q♦ 21 doubled404× the bet
4108♣4♥ 125♥8♠2♣Q♠ 25 bust00× the bet
3106♥A♦ 173♠4♠5♠ 123♦K♥ 1300× the bet
2102♠2♦ 45♥7♥10♦ 22 bust00× the bet
110A♦J♦ 215♠3♠ 800× 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
f5660f1b2d5e33564b4046b60c43a10e7c431851a3acc8ae526eab05efb9dde0
Seed
7ca12df61e0a1c85034e29635f12e671d521e2c74cc6b71530c8fc1868df23bc SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
2dfcfc93063cbe5b8611e28b7f8f4567
Commitment
Batch 60,950, Merkle root cc97a72cc7ff0675a45a20c2232a45282c0f128d9a4b6b4b85739aa4c7e41e0b. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 57c0d5248b2990b2e3f0be49d0310c979ff05b2b9cf06ad33704f70185c48456
  2. cdbe7dc528dcd7ff902a9f2fe73dbcf46b1b9244d4bc97065a196c4c9d5a7c64
  3. b981267ebe37b210c8582996f14307459bfc5909e32a27fe265b2e75761bf5d4
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.