Degen Protocol
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Session against the house

Blackjack

ended Play money · a4e4607749aee92627ca33a2ae33d4ea

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,230 play
Returned
2,130 play
Bettor's net
-100 play
Return
95.52%

Results by hand

Final
Hands
200
played
Pace
20.4/min
overall 20.9/min
Biggest swing
+30
Seat 1 · hand 8

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

SeatNetRateStreak
gbb-100-50.0 play/100lost 1

Last hands

  1. 200Even0
  2. 199Seat 1+10
  3. 198Seat 1+10
  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
50104♥6♠2♠A♣J♦ 238♥3♥J♥ 21 doubled404× the bet
49103♥9♦3♠4♦ 194♣3♣6♥ 1300× the bet
48103♣7♣4♦8♠ 222♣A♠5♠ 18202× the bet
47103♣9♦J♠ 22A♣5♣4♥ 20202× the bet
4610J♣5♦A♣5♦ 21A♣9♥ 20A♥A♦ 1200× the bet
45108♥9♣ 17A♠Q♦ 21 blackjack252.5945× the bet
44106♠5♣3♦A♦4♦ 198♠7♥ 1500× the bet
43107♣J♥ 17Q♣4♥4♣ 18202× the bet
4210A♥6♠ 17Q♠5♥5♠ 20202× the bet
411010♣A♠ 2110♦Q♦ 2000× the bet
40103♣3♦4♠6♦5♥ 213♥J♠ 1300× the bet
39105♦9♣6♠ 205♥A♥6♣ 12 doubled00× the bet
3810A♥K♦ 21Q♥7♣ 1700× the bet
37109♣K♣ 199♦4♣3♥A♣ 1700× the bet
3610K♦8♥ 188♠6♦6♦ 20202× the bet
35103♣4♠8♦3♠ 186♠K♥ 1600× the bet
34105♣Q♣2♥ 178♦5♠ 1300× the bet
33107♥Q♥ 1710♠8♦ 18202× the bet
321010♠9♠ 197♦3♠5♣3♣ 1800× the bet
31106♦7♣K♦ 239♥2♠3♦ 14 doubled404× the bet
3010K♣A♠ 2110♥K♣ 2000× the bet
2910Q♥2♥J♦ 225♥9♥5♠ 19202× the bet
28108♠2♣4♦4♥ 186♥3♦8♥ 1700× the bet
2710K♦4♣3♥ 179♥J♠ 19202× the bet
2610J♠3♥2♦10♥ 255♦3♠2♦9♣ 19202× the bet
2510A♦10♠ 212♥8♥ 1000× the bet
2410J♣8♦ 18J♠9♣ 19202× the bet
23108♠8♣4♦ 2010♦Q♦ 20101× the bet
22107♠K♣ 178♠J♠ 18202× the bet
2110A♦3♠3♦ 17K♥2♥5♥ 17101× the bet
20102♣8♥A♥ 219♦10♠ 1900× the bet
191010♠6♥K♠ 263♦Q♠7♦ 20202× the bet
18106♣10♣8♣ 246♣2♦9♣ 17202× the bet
1710J♠6♠ 162♠J♥10♦ 22 bust00× the bet
16107♠J♠ 172♥K♦8♠ 20202× the bet
15107♥3♠K♠ 209♣2♠10♥ 21 doubled404× the bet
14107♣8♣6♦ 219♣2♣9♦ 20 doubled00× the bet
13108♠10♥ 18K♣6♦6♠ 22 bust00× the bet
1210Q♣Q♠ 20A♥9♠ 20101× the bet
1110A♣K♠ 219♠8♦ 1700× the bet
1010K♣3♠ 13Q♦A♦ 21 blackjack252.5945× the bet
9109♠7♣ 16J♣5♥10♣ 25 bust00× the bet
8103♦A♦J♠9♦ 237♥5♦2♥ 147♥2♠7♣ 16 doubled606× the bet
71010♥4♠ 147♠2♦6♦K♠ 25 bust00× the bet
610K♦J♦ 208♥Q♣ 1800× the bet
510K♣8♦ 182♣3♠6♣A♠3♠A♥A♣ 1700× the bet
4109♥3♦ 123♣5♥6♥J♠ 24 bust00× the bet
3104♠6♠J♦ 20K♣9♠ 1900× the bet
2102♠A♠5♣ 183♠A♠A♠10♣ 1500× the bet
110J♠2♠8♣ 20J♣10♦ 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
aa855df9d7cd1d0aa8b3bc5407c08b2b7cf4475fbd52526efbc83fe4fc158e3b
Seed
aedce5501ac519fea245ea2aaa6fe51fb947c950d035f1ef774ce4a89870de72 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
6f1121607a9cc8c619e6c5ebb431168a
Commitment
Batch 70,233, Merkle root a9c8847e252fa2ad73768a278cd407c7c5b1b0efbab8112bd4529656ca2c4664. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 2871ae3390e314c95d6b10e87a4bbb5ec16993b0f4a861ceff7ded6439525520
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.