Degen Protocol
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Session against the house

Blackjack

ended Play money · 61718ca0376f6cf39cc85308d7710e3a

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,260 play
Returned
1,970 play
Bettor's net
-290 play
Return
87.17%

Results by hand

Final
Hands
200
played
Pace
23.5/min
overall 20.7/min
Biggest swing
+40
Seat 1 · hand 142

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

SeatNetRateStreak
gbb-290-145.0 play/100won 3

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
100109♦A♣ 204♥5♦6♠7♠ 22 bust00× the bet
99107♠5♥9♣ 21Q♣Q♥ 2000× the bet
98104♣3♣3♣4♥10♣ 247♦K♠ 17202× the bet
97109♥8♠ 17Q♣J♦ 20202× the bet
9610Q♦3♣ 134♦3♠6♥9♣ 22 bust00× the bet
951010♣5♦K♥ 256♠3♠4♦4♣ 17202× the bet
9410A♥6♣ 17K♦Q♣ 20202× the bet
93107♣8♠3♦ 1810♠4♦4♠ 18101× the bet
92106♦10♦3♠ 198♣A♦ 19101× the bet
9110Q♦J♠ 203♦8♣A♥ 12 doubled00× the bet
9010A♥Q♦ 21A♠2♦ 1300× the bet
89108♦9♥ 17Q♣10♠ 20202× the bet
88102♠9♥K♠ 219♦2♦7♥ 18 doubled00× the bet
87104♣A♠10♥5♣ 202♣9♣2♦ 13 doubled00× the bet
86109♦J♦ 19Q♦9♥ 19101× the bet
85106♥2♥6♦5♦ 195♣9♠ 1400× the bet
84109♣2♣5♣10♦ 2610♦5♣2♣ 17202× the bet
8310A♣7♠ 184♦2♣K♠2♦ 18101× the bet
8210Q♣2♣ 123♠4♥8♣8♥ 23 bust00× the bet
811010♣2♣ 12K♦6♥ 16 surrendered50.5× the bet
80102♣K♦8♦ 2010♠8♣ 1800× the bet
7910K♠10♣ 202♥4♣3♠5♣8♥ 22 bust00× the bet
7810A♣J♠ 212♥8♠ 1000× the bet
77102♥Q♦2♣J♣ 24Q♥8♦ 18202× the bet
76102♦J♥9♠ 216♣8♠ 1400× the bet
7510Q♦7♦ 175♣K♥ 15 surrendered50.5× the bet
74102♦6♣10♣ 18J♠6♦ 1600× the bet
73109♠2♥ 11Q♦3♣K♠ 23 bust00× the bet
7210K♥J♦ 204♣9♠5♦ 1800× the bet
71103♠10♠4♣ 177♣6♣ 1300× the bet
70105♦A♦5♣ 21K♣2♦ 1200× the bet
69105♣A♦8♥5♦ 193♦A♥6♠ 20 doubled404× the bet
68108♣4♣10♥ 22Q♥7♦ 17202× the bet
67102♦K♠9♣ 217♣4♣J♦ 21 doubled202× the bet
66107♥6♦4♥ 177♠2♠Q♦ 19202× the bet
65105♣K♥10♦ 255♥A♣3♠ 19 doubled404× the bet
64105♦10♣ 15A♥K♥ 21 blackjack252.5945× the bet
63103♦6♠9♦ 189♣J♣ 19202× the bet
62104♦5♣J♠ 194♦J♠ 1400× the bet
61104♠8♦Q♣ 22J♥4♣ 14202× the bet
60105♥2♠7♣6♠ 20J♥4♣ 1400× the bet
591010♠9♦ 195♠A♠10♠8♠ 24 bust00× the bet
58102♦3♠6♦2♠3♦A♦ 177♠8♠ 1500× the bet
5710Q♣Q♠ 20J♥4♥K♦ 24 bust00× the bet
5610A♥4♠A♥K♦7♠ 238♥A♥ 19202× the bet
55105♥A♣5♦ 218♣3♦8♦ 19 doubled00× the bet
5410K♠Q♥ 20K♠10♠ 20101× the bet
53103♥8♦A♣2♠6♥ 206♠8♣ 1400× the bet
52109♥Q♥ 19A♠8♥ 19101× the bet
51104♦4♦A♥ 197♣4♦J♠ 21 doubled404× 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
58f7b85bd16853cc1229fb6014a9768bf46aa57fc93981a07e657d310f89327f
Seed
b46bdeaa319ef8310063d2ca46ffe078c6dde43ac1c1bf8676d9719738f01de8 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
4d770927257ae39daee8872803f62124
Commitment
Batch 72,245, Merkle root 02070a015b37cb286cc29eb76e20de899f0a62f0a25875462a8d865a25ef9e93. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 6d53749d7d27d57e5d7ba7ab2b344dfe112711c042930b3913f5089ca7848d36
  2. ab948c9456d70d99a6d061fb51cb3729020402f50db21884371df06d6ed5ce7a
  3. db68111c73d59f1e7293ae1552d9b1cfe2787b23edb80deba34ff31902aab87c
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.