Degen Protocol
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Session against the house

Blackjack

ended Play money · 40074bfa992d5bab5b0557cea268f0e3

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,320 play
Returned
2,265 play
Bettor's net
-55 play
Return
97.63%

Results by hand

Final
Hands
200
played
Pace
21.0/min
overall 20.1/min
Biggest swing
+40
Seat 1 · hand 179

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

SeatNetRateStreak
gbb-55-27.5 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50108♦A♥ 196♠9♥K♠ 25 bust00× the bet
49108♠2♠10♣ 209♦8♣ 1700× the bet
4810J♠6♦Q♠ 265♠3♦A♠ 19202× the bet
47104♦K♦Q♣ 24Q♣2♠ 12202× the bet
4610J♥K♣ 202♣2♥10♥7♣ 21202× the bet
4510J♦K♠ 202♠9♠5♣ 16 doubled00× the bet
4410K♣8♥ 1810♦Q♠ 20202× the bet
431010♦Q♠ 20Q♦10♦ 20101× the bet
4210K♥Q♠ 20K♠8♠ 1800× the bet
411010♦6♦8♥ 2410♦8♠ 18202× the bet
40104♦K♣2♠A♦ 179♦3♥ 1200× the bet
39104♣Q♠10♠ 244♣Q♠ 14202× the bet
3810A♣K♣ 21K♣7♦ 1700× the bet
37109♠5♣ 145♥Q♦K♣ 25 bust00× the bet
3610Q♠J♦ 209♠7♣ 16 surrendered50.5× the bet
35105♣2♦5♦9♦ 2110♣J♥ 2000× the bet
34108♣A♥ 1910♥Q♦ 20202× the bet
33103♥5♦Q♥ 186♠7♥ 136♠4♥10♦ 20 doubled404× the bet
321010♠3♣9♥ 223♦2♦3♠5♠5♦ 18202× the bet
31109♥10♠ 19K♥4♠3♥ 1700× the bet
30107♦6♥9♠ 223♠J♥4♣ 17202× the bet
2910Q♥3♥9♣ 22K♦J♣ 20202× the bet
28107♦A♣ 186♦7♦6♠ 19202× the bet
27104♠Q♣7♠ 217♦3♥3♦ 13 doubled00× the bet
26107♦10♦ 17J♣4♥6♦ 20202× the bet
25102♣7♦K♣ 194♥10♣ 1400× the bet
24104♥2♣10♣Q♥ 267♣10♥ 17202× the bet
23105♦Q♦Q♣ 2510♦6♠ 16202× the bet
22106♣K♠10♥ 264♥9♠ 13202× the bet
2110Q♣5♣4♦ 194♥5♥J♣ 19101× the bet
2010K♣2♣4♣8♠ 2410♣J♦ 20202× the bet
19106♠K♦K♣ 2610♥7♥ 17202× the bet
18107♣A♣ 18A♦5♣10♦4♣ 20202× the bet
17105♦4♦2♠8♦ 19K♦8♥ 1800× the bet
16109♣7♦K♦ 267♠3♥J♠ 20 doubled404× the bet
15105♥2♥5♣6♥ 185♠3♥7♥ 1500× the bet
14104♣4♥7♥10♣ 259♦8♣ 17202× the bet
13108♠3♦A♦8♣ 203♣5♦7♣2♣ 1700× the bet
121010♠5♣A♦3♣ 192♠5♠Q♣ 1700× the bet
1110J♦7♥ 17Q♣8♠ 18202× the bet
1010J♥A♣ 216♦2♠ 800× the bet
910A♠J♣ 21A♥9♣ 2000× the bet
8105♣10♥2♠ 176♠Q♣ 1600× the bet
7106♣2♥9♠ 174♣7♠4♠ 15 doubled4♥A♥3♥ 18 doubled404× the bet
6104♠2♣9♦2♠ 178♠Q♠ 18202× the bet
5109♦J♣ 197♠5♣Q♠ 22 bust00× the bet
4102♠6♣2♣7♠ 1710♦9♥ 19202× the bet
3103♣9♣8♣ 207♦10♥ 1700× the bet
210Q♥K♥ 205♦J♥ 15 surrendered50.5× the bet
1109♦A♣ 20J♠2♥8♠ 20101× 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
2e776e01a6ba6568ea3817691062c4b847797d600d15cf0e34c847680b4ae350
Seed
8500a4e16a5b4d57a31df70289466eed31a1ac3ab7b6692b3cd2d7eae851451c SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
b12b81b6e04f2862284abb8ea99f14a5
Commitment
Batch 67,103, Merkle root adc771e736e64bb13f6b8a2cb8d56c761d73c018f9ec3b2471ca57b37faee5ab. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 2e161080ded78682e567398af3d4c0ba9e8cbd73e283b3e141b588acd6f9fa0a
  2. 01904fb45fdf08a4c95bfca087d169894c4f70fdadfd61763cc43aa904cbc837
  3. 275ecff98ec076642e31c89ddfcb343e069eb533cb8b0dae15a82b3b543f0513
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.