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Degen Protocol
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Session against the house

Blackjack

ended Play money · 08656d70cf8c37e53cf272e3f64f6a49

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,250 play
Returned
2,235 play
Bettor's net
-15 play
Return
99.33%

Results by hand

Final
Hands
200
played
Pace
21.5/min
overall 20.5/min
Biggest swing
-30
Seat 1 · hand 61

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

SeatNetRateStreak
gbb-15-7.5 play/100won 1

Last hands

  1. 200Seat 1+20
  2. 199Even0
  3. 198Even0
  4. 197Seat 1+10
  5. 196Seat 1+20
  6. 195Even0
  7. 194Seat 1+10
  8. 193Seat 1+20
  9. 192Even0
  10. 191Even0
  11. 190Seat 1+10
  12. 189Even0

The hands

Newest first
#BetDealerHandsPaidChecked
50109♥K♥ 195♠2♦J♥ 1700× the bet
4910Q♦5♣ 15K♠6♣ 16 surrendered50.5× the bet
4810J♥6♣6♠ 22A♥4♣A♠2♠3♣ 21202× the bet
47107♣8♦7♦ 223♦A♣10♣5♣ 19202× the bet
46109♠3♥A♠7♦ 207♣10♣ 1700× the bet
4510K♦A♠ 214♥Q♥ 1400× the bet
44109♦J♣ 198♣Q♠ 1800× the bet
43107♠3♦6♦Q♦ 26Q♦J♣ 20202× the bet
4210Q♣6♥J♣ 268♣J♠ 18202× the bet
41105♦5♥10♥ 20A♥K♣ 21A♠Q♥ 21404× the bet
40102♦Q♦8♣ 206♣Q♦ 1600× the bet
39107♥J♣ 17J♣3♦5♣ 18202× the bet
38105♣Q♥K♠ 252♦8♥2♦ 12 doubled404× the bet
3710Q♦5♦6♦ 21Q♠4♠7♦ 21101× the bet
3610J♣A♦ 213♦Q♦ 1300× the bet
3510J♠8♠ 182♥3♥K♦A♥Q♠ 26 bust00× the bet
34106♣J♣8♠ 24A♠9♥ 20202× the bet
3310K♦2♥10♣ 22A♣3♦7♠ 21202× the bet
3210J♠3♥6♦ 195♣3♥6♠6♣ 20202× the bet
3110Q♦A♠ 216♥8♥ 1400× the bet
3010A♦9♠ 202♦2♦9♦Q♣ 23 bust00× the bet
291010♦4♠A♦9♣ 24A♠6♣A♠9♠ 17202× the bet
28106♣9♠7♥ 224♠J♠ 14202× the bet
2710J♦8♦ 189♠2♦Q♣ 21 doubled404× the bet
26108♣5♠8♥ 21J♣Q♣ 2000× the bet
251010♠10♣ 2010♣7♠ 1700× the bet
24109♠6♦8♦ 235♦4♣10♥ 19202× the bet
23107♦2♣ 92♣K♣3♠9♥ 24 bust00× the bet
22102♠6♠10♣ 18Q♣J♦ 20202× the bet
211010♠2♠9♦ 216♣4♣10♥ 2000× the bet
2010K♥2♣ 12A♣7♣6♦2♠K♠ 26 bust00× the bet
19103♦10♣2♥7♠ 224♣6♠J♥ 20 doubled404× the bet
18107♠6♦A♠J♥ 244♦5♣10♥ 19202× the bet
1710J♥3♣J♦ 234♥8♠7♦ 19202× the bet
16103♦7♣A♣ 215♠7♣4♣ 1600× the bet
15107♣K♣ 176♠8♣4♥ 18202× the bet
1410J♣10♣ 204♥3♣9♥6♠ 22 bust00× the bet
13106♥10♥8♠ 248♥3♥J♣ 21 doubled404× the bet
1210K♦5♥5♥ 208♠10♥ 1800× the bet
11103♥10♣5♦ 185♠10♥ 1500× the bet
1010Q♦4♠7♥ 21K♦8♣ 1800× the bet
9107♠8♠8♥ 23A♦3♥A♦3♠ 18202× the bet
8109♦2♥3♠8♥ 223♦10♠4♥ 17202× the bet
71010♦6♣9♠ 259♣3♥A♠2♠6♠ 21202× the bet
610Q♠Q♠ 20Q♦A♥ 21 blackjack252.5945× the bet
5108♠K♥ 188♠A♦ 19202× the bet
410Q♦J♥ 205♠Q♦ 15 surrendered50.5× the bet
3102♦2♦J♥Q♦ 243♣8♠J♣ 21 doubled404× the bet
21010♦5♥ 15K♠A♣ 21 blackjack252.5945× the bet
1104♦Q♥9♣ 238♣K♣ 18202× 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
c5b254814b73905d13ca3dd7cab4aabd638b5675475f111cf2a2eef7d1ea7ba6
Seed
ca7117056ebf8d4b88f75b0ce569a9c0e1f544eea5f6a7f83a8175928114d103 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
8e15266883e59524b5b686cfda686b6e
Commitment
Batch 64,792, Merkle root d0bb2bf22b04a7964a53a8904b227f589fb0ab5ca7e22dbc91bf51d0bcd6fade. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 3b551d127bb16f6818ea4c569245cf67ad7ef7a562d47b96316fd09e311af8f3
  2. 87e556d569cc7b6c9e0582e1ec1a32e98f0e046d430a0555f34d1258cb474fae
  3. 0f035a08b304ed6304581bc8ff06df7cf39c512b8de7bf54541f8fc1622ca04f
  4. e8273ecf3cd23eac8c223102e6901fb23431e08bf6a907d48ff5d9b62279107b
  5. 275cc7e418b7c67cc79262f631da99aa60c52617edc22409319eb8da88980e6f
  6. 49bb44bf07e544ab382e2170722ecbeefafa92a7dab49e9db108e77fcff410ba
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.