Degen Protocol
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Session against the house

Blackjack

ended Play money · 623af9dd4500669219052f469db8900d

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,290 play
Returned
2,255 play
Bettor's net
-35 play
Return
98.47%

Results by hand

Final
Hands
200
played
Pace
20.6/min
overall 21.0/min
Biggest swing
+50
Seat 1 · hand 195

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

SeatNetRateStreak
gbb-35-17.5 play/100lost 2

Last hands

  1. 200Even0
  2. 199Even0
  3. 198Seat 1+15
  4. 197Even0
  5. 196Even0
  6. 195Seat 1+50
  7. 194Seat 1+10
  8. 193Even0
  9. 192Even0
  10. 191Even0
  11. 190Even0
  12. 189Even0

The hands

Newest first
#BetDealerHandsPaidChecked
20010J♥K♠ 2010♥9♦ 1900× the bet
19910K♥A♣ 21A♣7♦ 1800× the bet
19810Q♥9♦ 19A♠10♦ 21 blackjack252.5945× the bet
197106♦3♥4♥3♥A♣ 172♥3♦8♥ 1300× the bet
196102♠4♠10♠5♠ 216♦J♠ 1600× the bet
195106♣3♣7♦10♥ 262♣7♣2♥ 11 doubled2♦9♦5♥ 16 doubled2♠10♦ 1210010× the bet
194105♦4♣7♣8♥ 24J♣5♥ 15202× the bet
193105♥10♠6♠ 219♦4♥ 1300× the bet
192105♣7♣8♠ 206♦A♦10♣ 17 doubled00× the bet
19110K♣K♦ 2010♦K♠ 20101× the bet
190103♥A♠A♣Q♣5♠ 208♣4♠8♠ 20101× the bet
1891010♦8♣ 1810♥7♦ 1700× the bet
188105♣3♠3♠K♥ 215♠4♦4♠ 13 doubled00× the bet
187104♥J♥2♦9♦ 256♣3♥Q♣ 19 doubled404× the bet
18610K♣4♣ 1410♠4♣10♦ 24 bust00× the bet
185107♥7♦3♥ 177♣5♣6♣ 18202× the bet
18410J♦3♦6♣ 195♣7♥9♦ 21202× the bet
1831010♣Q♣ 206♠9♥ 15 surrendered50.5× the bet
1821010♠5♥K♥ 252♦3♥6♠6♣ 17202× the bet
181103♣5♥10♠ 18K♣5♥ 1500× the bet
180104♥A♦J♣5♠ 204♥6♥Q♣ 20 doubled202× the bet
17910J♠J♥ 208♥3♦9♣ 20 doubled202× the bet
1781010♥J♣ 204♣J♣2♦Q♠ 26 bust00× the bet
17710J♥5♥9♠ 244♠5♥10♥ 19202× the bet
176108♦Q♣ 187♣10♥ 1700× the bet
175104♦5♣10♦ 19Q♣2♦ 1200× the bet
17410Q♦5♣K♣ 257♥10♥ 17202× the bet
17310K♣6♦7♦ 23A♦9♣ 20202× the bet
172107♥10♥ 176♦6♠9♦ 21202× the bet
171106♦J♦J♠ 26Q♣K♠ 20202× the bet
17010Q♣K♣ 206♠6♦8♣ 20101× the bet
1691010♦J♣ 2010♠K♥ 20101× the bet
168102♣3♥5♥4♣4♥ 182♠5♥10♣ 1700× the bet
167108♠5♣K♥ 234♠6♦Q♣ 20 doubled404× the bet
166105♦9♣6♠ 204♦10♦ 1400× the bet
165109♥6♦6♠ 212♦Q♠8♠ 2000× the bet
1641010♦3♥9♦ 229♥Q♠ 19202× the bet
16310A♠3♥ 14J♦3♦A♦J♥ 24 bust00× the bet
16210Q♠4♦9♣ 23Q♠2♥8♥ 20202× the bet
16110A♦6♥ 178♦5♣J♦ 23 bust00× the bet
16010A♣2♠ 138♥7♣10♦ 25 bust00× the bet
159108♥8♣ 169♠4♣K♦ 23 bust00× the bet
15810A♥K♥ 213♦5♠ 800× the bet
15710J♥7♠ 179♥2♥4♣ 15 doubled00× the bet
156102♦6♦ 8J♠2♦K♠ 22 bust00× the bet
155103♦3♣10♦6♣ 222♦7♣7♣ 16 doubled404× the bet
15410A♥8♥ 1910♥K♠ 20202× the bet
153103♣7♠10♠ 20A♥8♠ 19A♦J♥ 21202× the bet
152105♠J♥9♣ 24A♦2♣10♠ 13202× the bet
151109♣Q♥ 194♣Q♥9♣ 23 bust00× 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
66ca6dba4bae76cb07ce20ded28d326a217ac69e44e28286808e951ac1814c5e
Seed
8e051689b28231231e818c5870cc29e4c1004caf847eb914c2873d8c4e45d566 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
7678046d48a958907c93ec5cfa375166
Commitment
Batch 71,596, Merkle root 8a2f6a37a64f5d96d89c021b0ef063174e3d4a1590d052b78a79e7de5b7c5402. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 4d4d8e647de84c4e5d50ca7f107416ff34da863b4b546aea233ca44ecbb177bb
  2. 135ba3c923b7e2c6d1cada58526e71ca5af1322d8a74933117111bf683956799
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.