Degen Protocol
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Session against the house

Blackjack

ended Play money · 021b686ff96c0c49b07e3c8e4ab95f52

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,360 play
Returned
2,345 play
Bettor's net
-15 play
Return
99.36%

Results by hand

Final
Hands
200
played
Pace
21.2/min
overall 19.3/min
Biggest swing
+30
Seat 1 · hand 18

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

SeatNetRateStreak
gbb-15-7.5 play/100lost 3

Last hands

  1. 200Even0
  2. 199Even0
  3. 198Even0
  4. 197Even0
  5. 196Seat 1+15
  6. 195Even0
  7. 194Seat 1+15
  8. 193Even0
  9. 192Seat 1+20
  10. 191Seat 1+20
  11. 190Even0
  12. 189Even0

The hands

Newest first
#BetDealerHandsPaidChecked
10010J♦J♦ 20K♥J♥ 20101× the bet
99109♦A♦ 209♠6♦5♠ 20101× the bet
98105♣2♥10♦ 17J♦K♠ 20202× the bet
9710K♦Q♦ 205♦6♦5♦ 16 doubled00× the bet
96102♥A♠10♥5♣ 183♣5♥3♥Q♣ 21202× the bet
95106♣9♣9♣ 247♣J♠ 17202× the bet
941010♥K♥ 20A♣4♥J♣K♣ 25 bust00× the bet
93109♦8♥ 176♦J♠ 16 surrendered50.5× the bet
92105♥4♠10♠ 19Q♠J♦ 20202× the bet
9110Q♥J♠ 209♥2♥9♣ 20 doubled202× the bet
90105♠3♠K♥ 18Q♥Q♥ 20202× the bet
89103♥3♠J♥4♠ 205♥8♣ 1300× the bet
88106♠K♣3♣ 192♣A♦A♠ 14 doubled00× the bet
87108♦8♥9♣ 253♠4♣J♠ 17202× the bet
861010♠Q♦ 208♦5♣7♣ 20101× the bet
85106♣K♠K♣ 264♠Q♠ 14202× the bet
8410J♦5♦2♠ 174♥Q♦3♥ 17101× the bet
831010♠6♠9♥ 252♥3♠8♣4♠ 17202× the bet
82103♦6♠2♣A♦2♦3♠ 179♣2♦8♣ 19 doubled9♦7♣ 16404× the bet
81106♠A♥ 174♣8♠ 1200× the bet
80105♠6♥3♥5♠ 199♥K♣ 19101× the bet
79103♥7♥A♠ 21A♣3♥3♠8♥ 1500× the bet
7810A♦A♥ 125♠Q♠10♣ 25 bust00× the bet
77109♥5♦8♣ 22K♦9♣ 19202× the bet
7610K♥A♥ 213♦3♥ 600× the bet
75107♦K♦ 17A♥J♥ 21 blackjack252.5945× the bet
74103♦3♣5♦J♣ 213♠A♦2♦8♦ 1400× the bet
73109♣3♥A♠9♣ 229♥8♠ 17202× the bet
72102♣3♥6♦3♥7♥ 212♠4♠2♦J♦ 1800× the bet
7110A♠K♠ 218♥7♦ 1500× the bet
7010A♣10♠ 21K♠A♠ 21 blackjack101× the bet
6910Q♥5♥Q♣ 259♠8♦ 17202× the bet
68105♠3♦5♦J♦ 23K♥2♦ 12202× the bet
67107♣7♥6♣ 203♥8♠4♣ 15 doubled00× the bet
661010♣J♣ 20J♣7♠ 1700× the bet
65106♥5♦4♦5♠ 207♣A♥9♦ 17 doubled00× the bet
64103♣4♦A♠ 182♦3♠6♠3♥ 1400× the bet
63103♣7♠4♥9♦ 234♦Q♦ 14202× the bet
62104♥7♣ 11A♥Q♥ 21 blackjack252.5945× the bet
61103♠Q♥8♥ 21Q♦K♦ 2000× the bet
60105♣4♣K♣ 199♦5♣ 1400× the bet
59104♥Q♠4♦ 18A♥8♦ 19202× the bet
58103♣6♥Q♠ 1910♦4♥ 1400× the bet
5710J♦7♠ 176♦7♥A♣9♣ 23 bust00× the bet
56104♥K♥10♦ 247♦2♠2♥ 11 doubled404× the bet
5510Q♠Q♣ 20Q♠10♦ 20101× the bet
541010♥2♣ 125♦J♦ 15 surrendered50.5× the bet
53105♦7♣6♥ 186♦9♣ 1500× the bet
52103♦J♣10♣ 233♥10♣ 13202× the bet
511010♦8♦ 182♠10♣3♦K♦ 25 bust00× 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
55bca0f16493e23d9f0f577b72a2ba2a32fcf5e0e3edbdb2e292b5a3f587fb54
Seed
615807770e8b282c0913869e44fa75beb094b955fc84800dd3535f0126d04991 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
cd7cbc6e2830726f09ec068c9dc39e88
Commitment
Batch 66,786, Merkle root 0a14e7f2b619ca522b960b20db19230dbd1ede72b1219a78e1e73b842acb5330. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. d670d988a116b7d8ae1f76fd8814629904ec5520b8eda408bc0d1c2dcf48834c
  2. b0fe4e055cd9a3350fc5d028b031e510f096d2c7a8274bc8940f1ec33ea2dc27
  3. 065db894499de99f1a99b06d5af920b4606f0ce26d2425be58f4fa04b1f6d493
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.