Degen Protocol
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Session against the house

Blackjack

ended Play money · 949b4c506cfaf10edae6f5b81b607199

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,220 play
Returned
1,775 play
Bettor's net
-445 play
Return
79.95%

Results by hand

Final
Hands
200
played
Pace
19.3/min
overall 20.1/min
Biggest swing
-30
Seat 1 · hand 58

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

SeatNetRateStreak
gbb-445-222.5 play/100lost 5

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50105♥A♣9♥J♣ 252♦J♣ 12202× the bet
49107♠A♥ 188♣5♠K♠ 23 bust00× the bet
48102♦5♠3♠8♣ 188♦3♦3♥ 14 doubled00× the bet
4710J♠5♣ 154♠K♥K♠ 24 bust00× the bet
4610A♠K♥ 21K♠6♥ 1600× the bet
4510K♣9♠ 195♠4♠K♥ 19101× the bet
44103♠10♦9♠ 228♠10♠ 18202× the bet
43102♠10♦K♦ 223♥5♥7♠ 15202× the bet
4210A♦3♠4♣ 188♠A♦ 19202× the bet
411010♥6♣ 16A♣4♠10♣8♦ 23 bust00× the bet
4010A♣K♥ 216♦9♣ 1500× the bet
39102♣4♠5♦4♥3♠ 186♦K♥ 1600× the bet
38104♦9♠7♣ 2010♠K♠ 20101× the bet
3710A♦9♥ 20K♠2♠3♦3♣ 1800× the bet
36106♦A♠ 178♠Q♦ 18202× the bet
35109♦J♦ 197♣7♠J♦ 24 bust00× the bet
3410Q♠A♦ 21K♥5♠ 1500× the bet
33108♠9♦ 17A♠4♦ 15A♠2♠ 1300× the bet
3210K♣2♦ 1210♦6♥ 16 surrendered50.5× the bet
31103♥K♠ 132♣Q♥J♠ 22 bust00× the bet
3010K♠10♥ 205♥A♠7♦J♣ 23 bust00× the bet
2910J♣K♦ 20K♠8♣ 1800× the bet
2810K♣Q♣ 2010♦9♦ 1900× the bet
27107♥10♦ 175♠8♦5♦ 18202× the bet
26103♥5♦Q♠ 188♠K♦ 18101× the bet
25108♠3♦9♠ 207♣5♠9♠ 21202× the bet
2410J♦5♣ 155♠A♣Q♣Q♣ 26 bust00× the bet
23107♠Q♦ 17K♦5♦9♦ 24 bust00× the bet
2210J♦K♣ 202♦2♦9♣7♦ 20101× the bet
2110A♥3♣ 145♥7♣J♥ 22 bust00× the bet
2010J♦4♣J♥ 245♥2♥4♣2♣6♥ 19202× the bet
19105♦4♠7♣10♠ 267♠10♥ 17202× the bet
1810J♠6♣ 166♥K♦ 16 surrendered50.5× the bet
17103♣4♠ 7Q♥A♣ 21 blackjack252.5945× the bet
16106♦3♦K♦ 195♥9♦ 1400× the bet
1510K♠2♦ 12K♠5♠ 15 surrendered50.5× the bet
141010♣K♠ 20J♦9♠ 1900× the bet
13104♠5♣9♦ 185♠4♣K♦ 19 doubled404× the bet
12109♥3♣J♠ 22J♠3♦6♣ 19202× the bet
111010♠6♠2♦ 184♣J♣5♠ 19202× the bet
10103♥10♠4♠ 1710♣K♠ 20202× the bet
9109♦5♠ 149♣7♥ 16 surrendered50.5× the bet
8103♥Q♦4♦ 17Q♥5♥ 1500× the bet
710J♣K♠ 20J♠4♦4♠ 1800× the bet
6108♠3♥ 119♦3♣J♥ 22 bust00× the bet
5102♦5♥Q♠ 17Q♠K♦ 20202× the bet
41010♠2♥9♦ 21Q♠8♦ 1800× the bet
31010♠8♥ 188♣9♣ 1700× the bet
210K♥Q♦ 208♦4♠10♣ 22 bust00× the bet
1109♠Q♣ 196♥8♠9♥ 23 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
2000d9d6dd7c0c1324d28871ce8a28804454374df02d080d144a076c16a32411
Seed
622f356b934ed04274c53290040f24ee23bf9f80841ac26cc5bf54fdd1c02df7 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
11525b10384da0b7ca5c87d46dc791ef
Commitment
Batch 66,564, Merkle root 8055fc8888f9d5b77cd96e7a5793e9f5fb994967f3dd7436bc05a0c2072749aa. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 9c7ae3958a26ca3486132374854dc49b86311ca43cb10337362957fadc340804
  2. 45d97a062d386d23a8a6dd1bdbdb643f28dc49ed96a6adb96017a7b6c5087e14
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.