Degen Protocol
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Session against the house

Blackjack

ended Play money · 3e5f99a7f9cc113a7c13b84254e51451

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,250 play
Returned
2,160 play
Bettor's net
-90 play
Return
96.00%

Results by hand

Final
Hands
200
played
Pace
20.7/min
overall 20.9/min
Biggest swing
+20
Seat 1 · hand 22

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

SeatNetRateStreak
gbb-90-45.0 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
5010Q♠A♥ 21J♠2♥ 1200× the bet
49109♠6♣ 157♠8♣J♥ 25 bust00× the bet
48103♥8♥4♣4♣ 192♠3♦9♠ 1400× the bet
47104♦K♥ 1410♠A♦ 21 blackjack252.5945× the bet
46109♠6♣ 15J♥6♥ 16 surrendered50.5× the bet
45103♣K♥2♠5♦ 202♥4♣2♠3♠J♥ 21202× the bet
441010♥A♥ 219♦9♥ 1800× the bet
43106♦9♠A♠8♣ 244♠K♥ 14202× the bet
42104♦3♥6♦5♦ 184♥3♠2♦J♣ 19202× the bet
41103♦Q♥4♦ 175♥5♣7♠ 17 doubled202× the bet
40108♣9♦ 177♣5♦K♦ 22 bust00× the bet
391010♣Q♦ 204♣A♠K♥2♥ 1700× the bet
38104♦A♣9♥J♣ 249♣4♠ 13202× the bet
37108♣3♣Q♣ 21J♥8♦ 1800× the bet
36103♥4♦10♥ 17A♣3♦J♥ 1400× the bet
3510A♠J♥ 21J♥K♠ 2000× the bet
34104♥A♥J♦2♦ 172♦10♣ 1200× the bet
33109♥J♦ 1910♠6♦ 16 surrendered50.5× the bet
32106♦3♣ 9A♣10♦ 21 blackjack252.5945× the bet
31103♣4♦3♠3♣3♦6♠ 229♥2♥9♥ 20 doubled404× the bet
30102♥9♥2♥4♣ 17J♣J♣ 20202× the bet
29109♠3♥3♥9♦ 249♠A♦ 20202× the bet
28107♣3♥ 103♦J♥10♠ 23 bust00× the bet
2710A♦4♦ 1510♠6♦ 16 surrendered50.5× the bet
2610Q♣9♥ 196♥6♥A♦9♠ 22 bust00× the bet
2510K♣9♦ 193♣J♠3♦5♠ 21202× the bet
2410J♠8♥ 186♠2♥Q♦ 18101× the bet
23102♥5♣4♦2♦8♦ 21J♠8♦ 1800× the bet
22105♥Q♣9♣ 244♣5♥Q♥ 19 doubled404× the bet
2110K♠2♥ 1210♠2♥10♠ 22 bust00× the bet
2010J♣3♣K♣ 234♠3♠9♣2♥ 18202× the bet
191010♥6♥7♥ 233♠6♣A♦ 20202× the bet
1810K♣6♣2♠ 18Q♣9♠ 19202× the bet
17109♦5♠5♣ 199♣Q♣ 19101× the bet
1610J♣8♦ 187♠3♥5♦J♠ 25 bust00× the bet
15109♣7♥7♠ 237♥5♣6♠ 18202× the bet
14104♣6♠A♦ 217♦K♠ 1700× the bet
13104♦3♣K♠ 1710♠2♣ 1200× the bet
121010♠5♠8♦ 23J♣8♦ 18202× the bet
11102♥6♥J♠ 187♠2♣2♦7♦ 18101× the bet
1010K♣5♠6♥ 2110♣9♦ 1900× the bet
9104♠4♥10♠ 182♣A♠4♦8♣ 1500× the bet
8104♥Q♥Q♦ 24K♠6♠ 16202× the bet
7103♥3♣10♣6♦ 226♣10♦ 16202× the bet
610K♠J♠ 204♣J♦K♥ 24 bust00× the bet
5107♣3♣J♠ 207♦Q♦ 1700× the bet
4104♦3♠5♥Q♥ 223♠2♣J♠ 15202× the bet
310Q♣9♣ 192♠8♥2♣K♣ 22 bust00× the bet
2109♥A♥ 205♥3♥Q♠ 1800× the bet
110A♠J♠ 216♥J♥ 1600× 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
b52ab11af1367357347da191536faae36f477cd78df61a66c9be073cf3c32d0c
Seed
aa96f713d8aeba5a0a60ecff80a14ed48b9cf70a4bf1a028f7b56d257fdbd887 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
13beb7cd8424dc826f2e04683df77cf5
Commitment
Batch 69,106, Merkle root 8dd872ed1b7146e364fec6f2c17aac5c0e05939bed771838a6ab22eeb2d569d4. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 8cb5fbfa55a7431c0be4189df718411c4dd60e394f4247fed4c405f106a3175c
  2. 29d66cb36b623ef25ab465ce0dab760fdbf33b9cdaf4271fe71cd9e8fd3439a8
  3. 9dd73a04d32f093ee98bb6b75a08f48de9ea24829e505ad64a69ac0197df4c99
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.