Degen Protocol
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Session against the house

Blackjack

ended Play money · a0bdc3465dcd0b5f45b25d360e82de13

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,270 play
Returned
2,185 play
Bettor's net
-85 play
Return
96.26%

Results by hand

Final
Hands
200
played
Pace
20.0/min
overall 20.3/min
Biggest swing
+40
Seat 1 · hand 161

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

SeatNetRateStreak
gbb-85-42.5 play/100won 1

Last hands

  1. 200Seat 1+10
  2. 199Even0
  3. 198Even0
  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. 189Even0

The hands

Newest first
#BetDealerHandsPaidChecked
50109♠6♥ 152♣2♣K♦8♠ 22 bust00× the bet
491010♥6♣J♣ 267♣J♥ 17202× the bet
4810J♣2♦A♥K♦ 239♠10♥ 19202× the bet
47109♦J♠ 19A♥7♦ 18A♣Q♣ 21202× the bet
46107♦A♣ 18J♦J♣ 20202× the bet
4510K♣2♠8♣ 20A♠6♠3♦ 20101× the bet
44107♣A♠ 18K♦J♣ 20202× the bet
431010♥9♦ 198♥A♥ 19101× the bet
4210Q♣5♠6♦ 212♥2♥K♦A♠3♠ 1800× the bet
41104♦3♦10♦ 172♣7♥4♠ 13 doubled00× the bet
4010J♠K♥ 2010♥J♥ 20101× the bet
39109♥K♥ 199♦7♥ 16 surrendered50.5× the bet
38102♥4♠2♦3♠3♣J♥ 2410♣5♥ 15202× the bet
37103♠A♣K♥2♣2♣ 182♥5♦K♠ 1700× the bet
36104♠4♦A♦ 193♦10♣ 1300× the bet
35103♣K♦A♣K♥ 244♠2♣Q♣ 16202× the bet
341010♣Q♥ 207♥A♣10♥ 1800× the bet
33105♣Q♠9♣ 244♣6♣9♦ 19 doubled404× the bet
32104♠10♦K♦ 246♠4♥7♠ 17 doubled404× the bet
31109♣10♦ 192♣2♦7♠8♣ 19101× the bet
3010K♦6♠7♦ 23Q♣Q♥ 20202× the bet
2910Q♣5♣ 158♦6♠9♣ 23 bust00× the bet
2810Q♥5♠7♣ 224♥10♥7♣ 21202× the bet
27103♥10♣10♦ 234♣A♠J♣ 15202× the bet
26108♠10♠ 18J♣4♠A♣8♣ 23 bust00× the bet
25105♣Q♠7♣ 227♥9♠ 16202× the bet
24102♦3♦7♥3♠5♠ 205♠10♠ 1500× the bet
2310J♣3♠A♥A♦4♥ 197♠A♦K♣ 1800× the bet
22105♦A♣2♦ 185♣Q♦ 1500× the bet
21104♥10♠9♥ 239♠5♦ 14202× the bet
20106♠10♣7♠ 233♣9♦ 12202× the bet
19108♥6♦ 143♦J♦A♥10♦ 24 bust00× the bet
18109♣9♠ 185♥9♠A♠J♥ 25 bust00× the bet
17105♦6♦3♣5♠ 193♠A♠8♣ 12 doubled00× the bet
16104♦5♠6♣6♥ 216♣2♦4♣ 126♦7♥ 1300× the bet
1510Q♥4♥ 147♥6♥9♥ 22 bust00× the bet
14103♠8♦4♦5♦ 20Q♠3♦ 1300× the bet
13107♦Q♠ 177♠A♦ 18202× the bet
12103♦5♦7♥5♣ 204♥7♣Q♠ 21 doubled404× the bet
11104♣9♣Q♥ 235♣J♠ 15202× the bet
1010K♣K♦ 204♦8♥4♦10♣ 26 bust00× the bet
9107♥J♠ 175♣J♣J♥ 25 bust00× the bet
8108♠K♠ 18K♥10♥ 20202× the bet
710Q♣8♣ 18Q♠3♦3♥2♥ 18101× the bet
610Q♥8♣ 18Q♠5♥ 15 surrendered50.5× the bet
510A♥10♣ 214♣8♠ 1200× the bet
4103♦3♦9♦5♦ 204♣2♠Q♦ 1600× the bet
3105♦10♦Q♥ 252♣6♦3♠A♠ 12202× the bet
2109♣5♣2♦7♥ 232♥4♥Q♠2♣ 18202× the bet
1108♥A♣ 19A♦2♦J♣6♦ 19101× 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
b11fe41ab9dcaaf8647e4425a49f221d64a38dbc04247d6349be749f1de7c962
Seed
ee767850dd217269fdacf47cd2cda6cd585ad40cb73f04a5047759e516a85cea SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
c3b56765c04da4d174d7cc39d598f770
Commitment
Batch 65,304, Merkle root 85a46e1f2ec2c7fe1158c528499d9dc3985e39e14d867c6172cb9efd607c1819. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 4d24dfba583244fb3cd51fdafc1a7adee1f15d1317b1065498154c6537c757b7
  2. 6d334fb0eaeb8a58a54e8798691d1d88992a8569e5ab8d14e054ea82d262d78f
  3. dcddf841a418457b7bdbdb0374aa81977cda0ab57dbc6a8ce02155e798c390da
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.