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

Blackjack

Play moneyended

28ad0e5439d92db58398032e0076d529

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,330 play
Returned
2,050 play
Bettor's net
-280 play
Return
87.98%

Results by hand

Final
Hands
200
played
Pace
20.0/min
overall 20.1/min
Biggest swing
-30
Seat 1 · hand 60

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

SeatNetRateStreak
gbb-280-140.0 play/100lost 5

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50102♣8♦8♣ 187♦Q♦ 1700× the bet
49105♠9♥J♠ 245♠4♦A♦ 20 doubled404× the bet
48105♠4♣2♠A♣K♠ 222♣K♣ 12202× the bet
4710J♠7♣ 175♥9♦2♠10♥ 26 bust00× the bet
4610Q♦J♠ 206♦7♥Q♥ 23 bust00× the bet
451010♠2♣ 124♥A♦K♣J♣ 25 bust00× the bet
4410Q♥7♠ 177♠K♥ 17101× the bet
43106♥A♦ 178♣4♥ 1200× the bet
42104♥2♠7♥7♥ 204♠A♣2♥A♦ 1800× the bet
4110Q♦7♠ 174♦A♠5♣ 20202× the bet
40105♦3♦4♠2♠5♥ 19K♣6♠ 1600× the bet
39108♠8♣ 166♣K♠9♦ 25 bust00× the bet
38102♥2♥10♣3♦ 175♠3♠6♥ 1400× the bet
3710A♣7♦ 18K♣5♣10♣ 25 bust00× the bet
36102♥10♥4♥5♣ 21K♦8♣ 1800× the bet
35109♦8♠ 17K♣4♣7♣ 21202× the bet
34105♥9♥A♦A♦3♦ 194♠Q♦ 1400× the bet
33104♠9♠8♣ 212♥7♦J♠ 19 doubled00× the bet
32104♦K♣Q♥ 245♦3♣9♠ 17202× the bet
31104♠A♠J♦5♣ 203♦10♣ 1300× the bet
30106♠4♦ 10A♦10♣ 21 blackjack252.5945× the bet
29109♦4♠10♥ 23A♥8♦ 19202× the bet
28105♠7♠6♠ 183♣2♣J♠ 1500× the bet
27104♦8♠7♥ 192♣5♠7♥ 1400× the bet
2610A♣4♦ 158♦6♠10♣ 24 bust00× the bet
2510K♠8♣ 184♥9♣7♠ 20202× the bet
24102♣J♦8♥ 205♣A♦5♥ 21202× the bet
23109♠Q♥ 198♦K♣ 1800× the bet
22105♠3♠8♥5♦ 21Q♥6♦ 1600× the bet
2110J♥6♦6♦ 228♦10♥ 18202× the bet
201010♥K♥ 209♠4♣10♥ 23 bust00× the bet
19102♦6♥6♣K♣ 24Q♠J♠ 20202× the bet
1810J♥4♠ 146♦J♦ 16 surrendered50.5× the bet
1710K♦K♣ 202♣10♣7♣ 1900× the bet
1610J♠K♥ 208♥A♠ 1900× the bet
15104♦7♠4♣8♣ 239♠K♣ 19202× the bet
1410A♦8♦ 19Q♥8♣ 1800× the bet
1310Q♣K♦ 20A♥3♦9♠5♦ 1800× the bet
121010♠6♠ 16K♥3♦A♦A♣K♦ 25 bust00× the bet
1110A♠K♠ 21A♥J♣ 21 blackjack101× the bet
10108♣7♥7♠ 229♣8♦ 17202× the bet
910K♣J♣ 205♥8♠4♣ 1700× the bet
810K♠4♦2♥8♦ 249♠4♠6♣ 19202× the bet
7106♠6♥8♥ 203♠7♣K♦ 20 doubled202× the bet
6108♣8♥9♦ 257♣6♣2♠A♥A♥ 17202× the bet
510A♠8♥ 195♠6♦A♠3♦K♠ 25 bust00× the bet
41010♠10♣ 205♥A♠7♣3♦Q♠ 26 bust00× the bet
3106♠5♥3♦A♠7♥ 22J♦J♣ 20202× the bet
210A♣K♠ 219♦2♥ 1100× the bet
1105♦5♥9♣ 192♦9♠J♦ 21 doubled404× 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
0ac27862da7f9c6cb7ba878c0a6da9859fcb95dcc78e179e2e53a92dd146bc2e
Seed
6fe1ac58822bbb65416f6c844b8779d83e83d6b79ee7b7d7df05bdc946579693 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
785d44003fefe4af0f07f55ea1380cf2
Commitment
Batch 58,674, Merkle root 4910738cf79fbbb0a51b94947dacaec20721d329669c462fdf7766687c23bdef. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. e5e437cbddc5d83daf5887ca29b0bd4bce1449b4da49e3f5ba4ad3ec5ec51a6f
  2. c1d30b8a7d5efc34a8154d489be16708dc96d8850e4375cb06c33810d86fdfa1
  3. f1af72b5211b823335efcb6c0257f3e3e00b830171888b9858e68ab9053dd2ba
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.