Degen Protocol
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Session against the house

Blackjack

ended Play money · 161a70cbff153da5b1d208b427bbd7ca

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,300 play
Returned
2,355 play
Bettor's net
+55 play
Return
102.39%

Results by hand

Final
Hands
200
played
Pace
19.8/min
overall 20.2/min
Biggest swing
-30
Seat 1 · hand 116

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

SeatNetRateStreak
gbb+55+27.5 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
150109♦3♣9♣ 21Q♣10♣ 2000× the bet
149103♥J♥2♣2♦ 173♣9♥5♥ 17101× the bet
148103♣8♣2♣A♠8♥ 226♥9♣ 15202× the bet
147108♣K♦ 186♣3♣Q♣ 19202× the bet
146105♣8♥5♣ 1810♥3♠ 1300× the bet
14510Q♣10♥ 202♣7♦Q♦ 1900× the bet
144109♥5♥A♥2♦ 178♠5♣8♥ 21202× the bet
14310J♥8♣ 182♥4♥J♠10♠ 26 bust00× the bet
142105♥9♦5♥ 19K♦4♥ 1400× the bet
141104♥2♥6♠3♥8♠ 235♠8♠ 13202× the bet
14010K♥5♠ 152♦4♥9♣Q♦ 25 bust00× the bet
139106♣K♠K♥ 266♠10♦ 16202× the bet
13810K♣J♦ 207♠3♣4♥9♠ 23 bust00× the bet
137104♦5♠K♦ 193♥10♣ 1300× the bet
136106♣7♦7♠ 204♠10♣ 1400× the bet
135103♥J♥9♣ 22Q♥4♠ 14202× the bet
134106♣9♥K♠ 256♠A♣5♥ 12 doubled404× the bet
133107♠8♥ 153♥10♠Q♦ 23 bust00× the bet
132108♥6♥ 14Q♦2♦10♦ 22 bust00× the bet
13110A♠K♠ 218♣9♦ 1700× the bet
13010K♣5♥ 15K♦3♥2♦9♠ 24 bust00× the bet
129107♠2♥ 95♦Q♠A♠6♠ 22 bust00× the bet
128102♣4♥K♠8♦ 242♥A♣3♠4♣ 20202× the bet
127104♣9♠J♠ 232♣Q♦ 12202× the bet
126109♣5♦ 14Q♦A♣ 21 blackjack252.5945× the bet
1251010♦6♠ 16K♦5♠ 15 surrendered50.5× the bet
124104♥6♥8♦ 188♠10♦ 18101× the bet
123107♣J♦ 172♦3♣2♦J♥ 17101× the bet
12210A♣2♠5♦ 18K♦7♦ 1700× the bet
12110Q♥10♥ 206♣6♠3♥6♦ 21202× the bet
12010J♣9♣ 19K♣K♥ 20202× the bet
119109♣8♦ 176♣5♦Q♣ 21 doubled404× the bet
118104♥5♠10♣ 194♣10♣ 1400× the bet
11710A♣Q♠ 212♦K♦ 1200× the bet
116105♣5♥5♦4♥ 196♦5♠4♣ 15 doubled6♠J♠ 1600× the bet
11510J♦K♣ 204♣A♦6♣ 21202× the bet
1141010♦2♦9♠ 21J♠8♥ 1800× the bet
113108♥6♠9♣ 234♦K♣7♣ 21202× the bet
11210Q♣7♠ 173♠3♠K♦6♥ 22 bust00× the bet
111109♣10♦ 19Q♠4♠6♣ 20202× the bet
11010K♦4♣2♥Q♣ 265♠2♦6♠5♣ 18202× the bet
109104♥K♣4♥ 184♠3♦J♣ 1700× the bet
10810K♠7♣ 17J♦A♣ 21 blackjack252.5945× the bet
107105♣A♠Q♥A♥ 17K♣6♥ 1600× the bet
106109♦K♠ 19Q♠6♦ 16 surrendered50.5× the bet
105103♣4♣7♥8♦ 22A♠7♥6♦ 14 doubled404× the bet
10410A♥9♥ 208♠J♣ 1800× the bet
103109♣K♠ 194♥5♣10♦ 19101× the bet
102108♠K♠ 183♦Q♣2♥8♥ 23 bust00× the bet
101104♠A♦5♦ 203♦2♥9♣ 143♦A♣9♥ 1300× 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
89d5e22b5949816d53304857d97a952efe7bb3384c1ece79a47c7598932797cb
Seed
eab90f8b75551390c978d05749c76eb81bba8bd8de33df88025397728ee3de7b SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
b1a4ec53bd6fdf837c649d54c0331cc2
Commitment
Batch 68,822, Merkle root 3b29ec95e6ecdd47342ac7f43745b574c3b1aa3bfb28e3a4de0a15a90365320b. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. f12b1cc74848754390599de4b130053b584efd0ace5f127660cf84bc225d6e43
  2. 41a865065503384ba049c4fc54071d293c2e27dc87d946dc4acdd63f16ba759c
  3. d63810f50de567ce94ab7a2f07b6a5a22c199ff913d76b1d4d9337650fc81aa3
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.