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

Blackjack

Play moneyended

415a9be5381cbdd35363462c8dfabc24

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,270 play
Returned
2,245 play
Bettor's net
-25 play
Return
98.90%

Results by hand

Final
Hands
200
played
Pace
17.3/min
overall 18.5/min
Biggest swing
+30
Seat 1 · hand 21

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

SeatNetRateStreak
gbb-25-12.5 play/100lost 3

Last hands

  1. 200Even0
  2. 199Even0
  3. 198Even0
  4. 197Seat 1+10
  5. 196Seat 1+10
  6. 195Seat 1+10
  7. 194Even0
  8. 193Even0
  9. 192Seat 1+20
  10. 191Even0
  11. 190Even0
  12. 189Even0

The hands

Newest first
#BetDealerHandsPaidChecked
10010A♥6♠ 17Q♥A♥ 21 blackjack252.5945× the bet
99104♥5♥9♣ 18J♠8♣ 18101× the bet
98102♣8♦5♦5♣ 207♣8♠ 1500× the bet
9710Q♠10♣ 208♥2♦K♣ 20101× the bet
96108♠Q♥ 183♠6♠5♠9♦ 23 bust00× the bet
95108♣10♥ 183♦4♠4♠4♠10♣ 25 bust00× the bet
94102♠4♣ 6A♦10♠ 21 blackjack252.5945× the bet
9310K♣4♠ 14Q♠3♦9♠ 22 bust00× the bet
92103♠7♦K♥ 207♥6♠ 1300× the bet
91107♦6♥J♣ 239♥A♦ 20202× the bet
9010J♥A♠ 21J♠9♥ 1900× the bet
89105♥9♦ 1410♣A♥ 21 blackjack252.5945× the bet
88104♥4♥10♥ 183♠Q♦ 1300× the bet
8710Q♥2♦ 122♣10♦4♥6♦ 22 bust00× the bet
86102♦4♦Q♠A♠ 173♦7♥7♥ 17 doubled3♠4♠A♠ 18404× the bet
85107♣5♥ 125♦J♠K♥ 25 bust00× the bet
84102♠4♣ 6J♥A♠ 21 blackjack252.5945× the bet
83107♠A♠ 182♦Q♠A♠2♣3♥ 18101× the bet
82107♥6♥Q♣ 236♣7♠8♣ 21202× the bet
8110J♣8♣ 188♠7♠ 15 surrendered50.5× the bet
80106♣A♣ 17J♣7♣ 17101× the bet
7910K♦J♣ 203♥6♠5♥K♠ 24 bust00× the bet
781010♠3♣5♦ 187♠Q♦ 1700× the bet
771010♠8♣ 187♠J♥ 1700× the bet
7610A♥10♣ 217♣5♥ 1200× the bet
75107♥6♠7♦ 2010♠7♠ 1700× the bet
74107♣8♣8♥ 238♠9♠ 17202× the bet
73105♦5♠ 10Q♥A♦ 21 blackjack252.5945× the bet
7210J♠2♠A♦4♠ 174♥3♦J♦ 17101× the bet
711010♣K♣ 20J♦9♥ 1900× the bet
70109♦10♠ 197♣J♣ 1700× the bet
6910K♠A♥ 215♣7♥ 1200× the bet
6810Q♦K♠ 205♥7♠10♦ 22 bust00× the bet
67102♣A♣2♠K♦6♥ 215♠6♥6♥ 17 doubled00× the bet
66103♥6♠9♦ 186♣3♦2♠ 11 doubled00× the bet
6510K♠A♣ 21A♠Q♦ 21 blackjack101× the bet
641010♦6♣ 162♣J♦10♥ 22 bust00× the bet
63107♥6♦ 13Q♥6♦J♥ 26 bust00× the bet
62105♠4♦4♠10♠ 2310♣2♥ 12202× the bet
61106♥10♦10♠ 266♠A♠10♠ 17 doubled404× the bet
6010J♠K♦ 209♠6♦ 15 surrendered50.5× the bet
591010♠10♣ 20K♠9♦ 1900× the bet
58105♠7♥ 1210♠A♠ 21 blackjack252.5945× the bet
57108♣Q♠ 18Q♠3♠Q♦ 23 bust00× the bet
56102♥Q♣J♥ 225♥8♠ 13202× the bet
5510Q♣2♦ 124♥2♦8♦2♣10♦ 26 bust00× the bet
541010♦5♠5♠ 208♠6♦7♦ 21202× the bet
53108♦A♣ 19J♣9♠ 19101× the bet
52102♣J♣Q♠ 228♦7♦ 15202× the bet
51103♦7♠K♥ 208♦3♦9♠ 20 doubled202× 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
7af94789357c461bd3b252db3c324e4df20929be0a311b6095391914f07f142e
Seed
e6ef4a237d13e6ac58b03b9c01c662283d62a430a7d275c6aea43ea98689c14b SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
60ea9c88391ce3debb050c983c5cddcf
Commitment
Batch 47,816, Merkle root 011ff4e8295d22f68621ed4aa2843a8a6cb2a6cd8ce8c8ac5b5c8db6fd713b8e. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 8f26fec584af1d7757c1198be94ba8740e9f10ef2087fe589f610b44770c7fd4
  2. e3ca49fa84a13fc804c9650dcf65cb0b3106346654fde7176a50afb0494374bb
  3. 2ff182a593b06925d0bfec4d68563fb8b99f302eee43934a36c44e0cda34d88b
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.