Degen Protocol
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Session against the house

Blackjack

ended Play money · 8f3f14b38e290c1f386a470b8cfda9d1

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,230 play
Returned
2,140 play
Bettor's net
-90 play
Return
95.96%

Results by hand

Final
Hands
200
played
Pace
21.3/min
overall 20.7/min
Biggest swing
+30
Seat 1 · hand 89

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

SeatNetRateStreak
gbb-90-45.0 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. 191Even0
  11. 190Even0
  12. 189Even0

The hands

Newest first
#BetDealerHandsPaidChecked
100106♠9♦J♣ 25J♥10♥ 20202× the bet
99105♦9♣2♣A♣ 1710♣Q♦ 20202× the bet
98107♣4♦Q♠ 219♠10♣ 1900× the bet
97108♦K♣ 1810♠6♣J♥ 26 bust00× the bet
96103♦8♦A♦J♦ 22K♦J♥ 20202× the bet
95105♦K♠5♦ 204♥9♥ 1300× the bet
94105♦2♣7♠5♣ 198♣A♣ 19101× the bet
93109♣9♠ 189♣5♠7♠ 21202× the bet
92105♠10♥6♣ 217♠Q♠ 177♥4♣6♥ 17 doubled00× the bet
91103♠2♠4♠A♠ 2010♥K♥ 20101× the bet
90109♥6♠ 153♦A♦9♠3♠7♦ 23 bust00× the bet
89106♠6♦A♥3♦6♣ 228♥3♣7♠ 18 doubled8♣4♥ 12606× the bet
881010♣10♣ 203♣2♠J♣8♠ 23 bust00× the bet
87109♠2♠9♣ 204♥10♣3♦ 1700× the bet
86109♠2♦ 115♥Q♠Q♥ 25 bust00× the bet
8510J♦5♥A♥4♠ 20K♣2♠6♦ 1800× the bet
8410K♠J♥ 205♦3♣2♥A♦ 21202× the bet
83108♦10♠ 185♠8♦3♠6♣ 22 bust00× the bet
82103♣7♦ 10K♠A♠ 21 blackjack252.5945× the bet
81107♣K♥ 176♥6♣7♣ 19202× the bet
80109♠9♥ 187♦10♠ 1700× the bet
79108♦Q♣ 18J♦4♦3♣ 1700× the bet
78109♥7♦7♠ 23A♣7♦8♠5♠ 21202× the bet
77103♥4♠7♠10♦ 24Q♦7♥ 17202× the bet
7610A♦J♥ 215♥4♣ 900× the bet
75102♣2♣8♠J♦ 226♥7♠ 13202× the bet
74102♥10♥7♠ 19K♥4♦ 1400× the bet
73107♥5♠ 12J♥A♣ 21 blackjack252.5945× the bet
72103♠10♣Q♠ 23K♥8♥ 18202× the bet
71102♠6♠ 89♠3♥J♣ 22 bust00× the bet
70103♣Q♥6♦ 19K♦5♥ 1500× the bet
69107♥8♦9♣ 243♠A♠K♥8♦ 22 bust3♦J♥8♦ 213♥6♦2♣Q♠ 21404× the bet
6810Q♠6♥4♥ 208♠3♣5♠ 16 doubled00× the bet
67102♥8♦3♥10♣ 234♠7♣A♥ 12 doubled404× the bet
6610Q♥6♦3♠ 196♥A♥10♣ 1700× the bet
65106♥2♠7♣3♠ 18J♥9♣ 19202× the bet
64102♣7♣ 9A♦10♠ 21 blackjack252.5945× the bet
631010♥J♣ 205♦5♦5♠9♥ 24 bust00× the bet
621010♥5♦5♣ 209♠2♦Q♣ 21 doubled404× the bet
6110A♠4♠J♥10♥ 25J♥10♦ 20202× the bet
6010K♦A♦ 215♠A♦ 1600× the bet
5910J♠9♦ 196♣2♥K♥ 1800× the bet
58108♠K♣ 183♣8♥6♥ 17 doubled00× the bet
5710K♣9♣ 19Q♥8♣ 1800× the bet
5610J♠A♦ 212♠2♥ 400× the bet
55106♦2♥Q♦ 184♣K♦ 1400× the bet
54109♣2♠6♣ 17Q♦J♠ 20202× the bet
53104♥9♠5♦ 18A♣5♣5♦ 21 doubled404× the bet
5210A♦8♦ 193♣5♣6♦A♠Q♠ 25 bust00× the bet
51105♣2♦Q♦ 174♣J♥ 1400× 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
39913445eaef6358019e9f364c0a2eae8d7e0a78da639ab6b7737108f290af12
Seed
3704e588e9d63daf7352eb5685a5058c4218de01d10c6fc66e2574fe48b749c0 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
43cecd1ab576f360ded44e51004d9bbb
Commitment
Batch 72,044, Merkle root 4d8ce50277bb11182f22d899c3bc9239cf84049ac99cb8bc189622918cae5735. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. eadbb8a0dbd8602581b1ed178df8ae546787dd37eae79a49aa1b8f0b354a7570
  2. 4f2de5323af69c95026d513cc83a9e0cb8c6d7030af9785b2daca04fa015e05c
  3. 437495fe8c669dcd75d12e7afd4a66a445b21db084ff48cd387326ed8aaf452c
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.