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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
100104♥6♦6♠A♠ 172♥10♠ 1200× the bet
99106♥2♣6♥8♣ 2210♣2♣ 12202× the bet
98106♦4♣4♠5♠ 193♥2♣8♦ 1300× the bet
9710A♣J♦ 212♣4♦ 600× the bet
96109♥10♣ 19J♠K♥ 20202× the bet
9510K♥7♣ 177♠7♦J♠ 24 bust00× the bet
94107♠2♠6♣Q♠ 25J♠7♥ 17202× the bet
93109♣9♦ 188♠10♠ 18101× the bet
92103♣8♦10♥ 212♥10♠7♦ 1900× the bet
91107♣5♠2♣A♦10♣ 254♠A♣K♦6♦ 21202× the bet
90104♣J♣6♣ 205♣5♠Q♦ 20 doubled202× the bet
89104♠3♦A♣ 18Q♥6♣ 1600× the bet
88102♠9♦8♦ 1910♠2♦3♦ 1500× the bet
87106♦9♠K♣ 2510♥8♣ 18202× the bet
86103♥4♠J♣ 177♣J♥ 17101× the bet
85105♠Q♠A♠K♥ 265♦A♠K♠ 16 doubled404× the bet
8410A♥Q♦ 215♥10♦ 1500× the bet
8310A♣7♣ 183♠10♦3♦K♥ 26 bust00× the bet
82108♦K♥ 183♥Q♦4♦ 1700× the bet
81108♥K♠ 182♦K♦7♥ 19202× the bet
8010J♠Q♥ 20A♦7♥9♣ 1700× the bet
79106♦4♣9♥ 195♦8♠ 1300× the bet
78106♠2♦Q♣ 183♠10♣ 1300× the bet
77104♠3♣10♣ 17J♦6♠ 1600× the bet
76104♠3♥2♣A♦ 202♥7♠9♣ 18 doubled00× the bet
75102♦7♦10♦ 197♠8♠ 1500× the bet
74103♣8♣5♠8♥ 245♦8♣ 13202× the bet
73106♦5♠K♠ 213♦10♥ 1300× the bet
72102♥Q♠A♣9♣ 225♠J♥ 15202× the bet
7110Q♦J♥ 208♥Q♦ 1800× the bet
70108♠8♠8♣ 242♦9♠K♥ 21 doubled404× the bet
6910Q♦10♥ 207♣K♠ 1700× the bet
68108♥A♣ 19J♦5♥A♥7♦ 23 bust00× the bet
67106♣8♠9♣ 2310♠10♠ 20202× the bet
66108♠K♣ 185♣K♠4♥ 19202× the bet
65107♥J♠ 175♥J♠2♥ 17101× the bet
64108♦A♥ 1910♥J♣ 20202× the bet
63108♠8♥7♣ 232♥J♥5♣ 17202× the bet
62102♠K♠9♠ 2110♦J♣ 2000× the bet
61103♦Q♠8♦ 218♦6♣ 148♣9♥ 178♥9♥ 1700× the bet
60109♦6♣ 154♣Q♦8♥ 22 bust00× the bet
59102♦8♣J♦ 20K♦3♦ 1300× the bet
581010♣10♥ 209♠6♥ 15 surrendered50.5× the bet
57105♦6♦9♦ 207♥J♥ 1700× the bet
5610A♦K♦ 21A♦J♥ 21 blackjack101× the bet
55104♣9♠Q♦ 23K♠10♠ 20202× the bet
5410A♦5♣7♥7♣ 203♦K♥8♥ 21202× the bet
5310J♦4♠9♦ 2310♦8♣ 18202× the bet
52108♣Q♥ 18J♦10♦ 20202× the bet
5110K♣10♥ 20Q♦4♣7♦ 21202× 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.