Degen Protocol
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Session against the house

Blackjack

ended Play money · 61ebb1374b7835d0039bc5edf6b25127

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,310 play
Returned
2,100 play
Bettor's net
-210 play
Return
90.91%

Results by hand

Final
Hands
200
played
Pace
20.4/min
overall 19.4/min
Biggest swing
+20
Seat 1 · hand 6

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

SeatNetRateStreak
gbb-210-105.0 play/100lost 3

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
200107♠2♣ 96♠K♥10♣ 26 bust00× the bet
19910A♠5♠ 162♦2♣4♠8♠K♥ 26 bust00× the bet
198102♥10♠9♣ 213♣10♦ 1300× the bet
197106♠K♥7♦ 239♥Q♣ 19202× the bet
196107♦4♣4♣J♣ 253♣8♥K♥ 21 doubled3♣6♥2♥4♦Q♦ 25 bust404× the bet
19510K♦7♣ 17Q♦5♣ 15 surrendered50.5× the bet
194104♦9♣4♦ 17J♠4♠ 1400× the bet
193103♠8♠Q♦ 21A♥5♣Q♠ 1600× the bet
19210Q♥10♥ 20J♣9♣ 1900× the bet
19110Q♥A♠ 218♦J♥ 1800× the bet
190105♠7♣4♦4♥ 205♦5♥8♦ 18 doubled00× the bet
18910A♠6♥ 179♥3♠K♠ 22 bust00× the bet
1881010♥K♣ 202♦9♠J♥ 21 doubled404× the bet
18710A♣A♦K♦8♠ 209♥K♥ 1900× the bet
186104♥6♥2♥7♠ 19K♦10♠ 20202× the bet
185102♣7♣5♦9♦ 23J♥3♠ 13202× the bet
184105♥K♣3♥ 188♣10♠ 18101× the bet
18310J♣2♦ 127♣2♣5♣9♠ 23 bust00× the bet
182108♣Q♣ 18A♣7♣ 18101× the bet
181104♥6♥4♥6♠ 20K♠K♠ 20101× the bet
18010K♣10♥ 207♥9♥ 16 surrendered50.5× the bet
17910A♣10♦ 21K♠6♦ 1600× the bet
178105♣7♣3♦7♠ 22A♣7♦K♦ 18 doubled404× the bet
177102♠Q♠3♠J♥ 25J♣9♦ 19202× the bet
17610K♦6♣10♦ 269♠10♠ 19202× the bet
175106♥4♥2♥J♣ 227♣9♣ 16202× the bet
174108♠3♦Q♣ 217♥10♣ 1700× the bet
173102♠9♦10♠ 218♥J♦ 188♣10♦ 1800× the bet
172106♣6♦3♦10♣ 256♥4♥2♠ 12 doubled404× the bet
1711010♣J♦ 20J♣2♦A♠9♣ 22 bust00× the bet
17010J♥K♠ 209♥7♥ 16 surrendered50.5× the bet
16910J♦4♠4♣ 18A♣A♠ 12A♣4♠ 1500× the bet
1681010♥9♥ 195♥2♠3♣6♠3♠ 19101× the bet
16710J♣7♦ 179♥8♣ 17101× the bet
166108♣4♣ 122♣J♣Q♠ 22 bust00× the bet
165108♠5♠ 13A♣Q♦ 21 blackjack252.5945× the bet
16410J♦2♣ 124♠9♦J♠ 23 bust00× the bet
1631010♠2♣9♥ 2110♠3♠3♠3♦ 1900× the bet
16210J♥9♥ 193♣Q♠6♥ 19101× the bet
161104♠K♦7♦ 213♥J♦ 1300× the bet
160108♦Q♣ 188♥6♠10♥ 24 bust00× the bet
159102♣2♦3♦5♠2♠10♦ 2410♦9♠ 19202× the bet
158106♥3♦6♣J♥ 253♠4♦A♠ 18202× the bet
157107♠8♣ 15K♠3♣3♦9♠ 25 bust00× the bet
156106♦A♠ 175♣7♣ 1200× the bet
15510Q♦6♣Q♠ 265♥9♥4♦ 18202× the bet
154109♦6♠ 156♦7♥2♥A♥8♠ 24 bust00× the bet
153102♦3♥9♣7♠ 219♥3♥4♠ 1600× the bet
152109♣4♦7♠ 209♥2♥6♠ 17 doubled00× the bet
151105♠8♠ 1310♠A♥ 21 blackjack252.5945× 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
f562c63a20c5a3aa9f230aa7852615dabda90a0690ee5373d6faff1a34f7f82d
Seed
86e9b37595ef130a9bac4603259bd5e820241b7d922a59e142acfe506a4ab420 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
d6bba9eafacb536ab882726a1f29c265
Commitment
Batch 66,981, Merkle root 065fe51ee24b725251c15a50d8e06b801d009a617706dc040441a0e1ab946523. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 784975e9b7ced0e8a1ab2b43e13fb78b72d2ac65c865a94408a8ccea4dd648d8
  2. de50da1b28870aaf2cd4a4beab51a4621d72d20d1796c7f626efe1c0b8e253c3
  3. bbdb7f1558aba2408d7ede0f45ae5b418053640e7f7834397546a10ceab3d4ba
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.