Degen Protocol
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Session against the house

Blackjack

ended Play money · db0a249253aa5b6b8b88a1a7b31143e5

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,240 play
Returned
2,090 play
Bettor's net
-150 play
Return
93.30%

Results by hand

Final
Hands
200
played
Pace
20.5/min
overall 20.6/min
Biggest swing
-20
Seat 1 · hand 4

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

SeatNetRateStreak
gbb-150-75.0 play/100lost 2

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50102♠J♣3♥J♥ 259♣3♣6♦ 18202× the bet
49109♠7♦7♦ 23J♥3♦8♦ 21202× the bet
48108♥10♥ 18Q♠5♥8♥ 23 bust00× the bet
4710A♠Q♠ 21Q♦10♠ 2000× the bet
46109♠6♥6♠ 212♠7♦10♦ 1900× the bet
45105♥K♠8♥ 23K♣10♠ 20202× the bet
44104♠4♥J♦ 184♥4♣2♥2♠ 1200× the bet
43105♥9♠9♦ 234♣6♠7♠ 17 doubled404× the bet
42108♣5♥9♥ 22Q♦10♣ 20202× the bet
4110K♦5♦J♠ 254♠Q♦7♠ 21202× the bet
4010A♠4♣ 152♠A♣Q♦Q♠ 23 bust00× the bet
39108♦3♣ 118♣7♣K♥ 25 bust00× the bet
3810K♥6♥8♣ 244♣K♦A♦A♥2♠ 18202× the bet
3710Q♦K♣ 20A♠5♥10♣5♥ 21202× the bet
36107♥10♠ 17Q♦3♥3♣J♦ 26 bust00× the bet
351010♠A♠ 219♣10♣ 1900× the bet
34102♣4♠J♥A♥ 173♣7♥3♠ 13 doubled00× the bet
33105♦J♠K♠ 252♦A♥7♦ 20202× the bet
32102♠K♣5♣ 175♦9♣ 1400× the bet
31105♥6♦5♠5♥ 21J♠5♣ 1500× the bet
30109♥2♣7♣ 186♥3♠K♠ 19202× the bet
291010♣9♦ 1910♣7♥ 1700× the bet
28106♥8♠9♣ 239♦3♠ 12202× the bet
27103♠J♥3♦5♠ 212♦9♣K♥ 21 doubled202× the bet
26106♠3♣9♠ 184♣7♥6♣ 17 doubled00× the bet
25107♥6♠3♠4♣ 20A♠2♠Q♦A♦4♣ 1800× the bet
24104♠Q♦5♣ 196♠4♥K♣ 20 doubled6♠8♠ 14404× the bet
23106♥2♥6♠6♥ 209♠7♦ 1600× the bet
2210Q♦A♥ 21J♦10♣ 2000× the bet
211010♠A♠ 21K♠4♥ 1400× the bet
2010A♥K♣ 218♣10♥ 1800× the bet
1910K♦J♣ 202♠A♠Q♥10♥ 23 bust00× the bet
18107♦3♠K♠ 20A♦4♣7♠A♥4♥ 1700× the bet
17108♣8♣ 16A♠10♦ 21 blackjack252.5945× the bet
16104♥9♠4♥ 174♥9♣ 1300× the bet
151010♥4♠K♥ 244♣2♦10♥4♠ 20202× the bet
14106♣4♦4♥8♥ 223♥9♣ 12202× the bet
13104♠3♦9♦2♣ 182♥7♥K♠ 19 doubled404× the bet
12102♠5♠8♠4♠ 195♣K♣ 1500× the bet
1110K♠8♠ 18A♠10♦ 21 blackjack252.5945× the bet
1010A♠8♠ 19A♣J♣ 21 blackjack252.5945× the bet
910Q♥5♦ 153♥J♠Q♥ 23 bust00× the bet
8109♣5♣3♥ 176♠5♥7♥ 18 doubled404× the bet
710J♣2♠A♣9♥ 22J♦Q♥ 20202× the bet
610K♣7♣ 17J♠Q♥ 20202× the bet
51010♣A♥ 21J♣8♣ 1800× the bet
4106♠3♥Q♣ 198♥10♦ 188♠J♠ 1800× the bet
3102♦A♣4♥ 17J♦10♥ 20202× the bet
2105♥A♠6♠5♣ 175♦3♠9♦ 17101× the bet
110K♥10♦ 20K♦8♣ 1800× 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
51f9e282c6d235c78e4b4e27f47cc380523a9c48a27e772919e999f14931139c
Seed
098dcc7497b311d4fc7c4c8ec6dfb3afaccc8e3047789d2a30143e1b4ca5cdaa SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
b852fa9a7b8efdac7979399a8f4f8507
Commitment
Batch 70,410, Merkle root 79f596674a1aae7ada8533cb3ecebb724655fa724b40be26ba617af43dc8bc39. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. b405491065c80153d6bb448bea9c0e3c57a818b75da2995dd701f9fa967c5d8c
  2. 3b54a257df6423701120d7c3a724a9f841d9ad04d9a97d145618aca85382ebcf
  3. f67eff9a453c7e1c92215d438b797c7668018208841711890b4689c9d1c476e0
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.