Degen Protocol
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Session against the house

Blackjack

ended Play money · af5dad97484041842605f1682006463c

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,170 play
Returned
2,065 play
Bettor's net
-105 play
Return
95.16%

Results by hand

Final
Hands
200
played
Pace
20.4/min
overall 21.1/min
Biggest swing
-20
Seat 1 · hand 8

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

SeatNetRateStreak
gbb-105-52.5 play/100lost 2

Last hands

  1. 200Even0
  2. 199Even0
  3. 198Even0
  4. 197Seat 1+10
  5. 196Even0
  6. 195Seat 1+20
  7. 194Even0
  8. 193Even0
  9. 192Seat 1+10
  10. 191Seat 1+10
  11. 190Seat 1+10
  12. 189Even0

The hands

Newest first
#BetDealerHandsPaidChecked
1001010♦2♥10♦ 227♥7♥4♣ 18202× the bet
99104♦K♦K♥ 245♦2♠J♠ 17202× the bet
9810Q♣9♠ 19Q♦A♣ 21 blackjack252.5945× the bet
97103♣7♣10♠ 205♥10♠ 1500× the bet
96106♦5♣K♠ 21K♥6♣ 1600× the bet
9510J♣A♣ 216♠J♣ 1600× the bet
94106♣9♥5♦ 20J♠2♦ 1200× the bet
9310Q♣8♥ 182♥K♣2♦8♥ 22 bust00× the bet
92105♠2♠9♣3♥ 19K♦K♥ 20202× the bet
91104♠3♣A♦ 187♥4♣5♥ 16 doubled00× the bet
90105♠9♠8♣ 222♦Q♦ 12202× the bet
89107♠9♥ 167♥6♣K♦ 23 bust00× the bet
88107♦9♠6♥ 22A♦10♦ 21A♣10♦ 21404× the bet
871010♣A♦ 215♣K♠ 1500× the bet
86103♦8♣Q♥ 213♥10♦ 1300× the bet
85105♠9♣Q♦ 248♦9♦ 17202× the bet
84106♥9♠4♣ 192♥A♣J♠ 13 doubled00× the bet
8310Q♣2♣ 128♥7♥ 15 surrendered50.5× the bet
82109♣A♣ 205♠4♠5♥6♦ 20101× the bet
81103♠4♦10♠ 173♦4♣7♠ 1400× the bet
8010K♦2♣7♣ 1910♥K♠ 20202× the bet
79103♦9♥7♠ 195♦K♠ 1500× the bet
7810A♦6♣ 172♦4♦Q♣4♣ 20202× the bet
77102♥5♥K♥ 173♣9♣3♦ 1500× the bet
76105♣10♣2♥ 179♦7♥ 1600× the bet
7510Q♠6♠A♥ 177♥Q♠ 17101× the bet
741010♦A♥ 215♠K♥ 1500× the bet
7310J♦Q♠ 204♠10♠5♣ 1900× the bet
7210A♣6♠ 177♥6♣6♣ 19202× the bet
711010♦3♣5♠ 182♥5♠2♣4♣4♦ 1700× the bet
7010J♠5♠K♣ 258♥4♠8♣ 20202× the bet
6910K♣10♦ 20J♥K♠ 20101× the bet
68108♠2♥K♣ 2010♣10♣ 20101× the bet
67108♣A♦ 194♣8♣5♠ 1700× the bet
66102♣9♣2♥7♣ 20J♦10♣ 20101× the bet
6510K♠9♠ 193♦K♣2♥K♣ 25 bust00× the bet
64107♠3♣Q♦ 205♦5♥J♥ 20 doubled202× the bet
63103♣J♦2♠4♦ 197♠6♣ 1300× the bet
62103♣6♦2♥4♥7♥ 22K♠7♦ 17202× the bet
6110A♥9♦ 20K♠8♣ 1800× the bet
60106♣A♥ 17J♣Q♥ 20202× the bet
5910Q♦J♣ 20K♠6♥ 16 surrendered50.5× the bet
5810J♠7♠ 175♣10♣ 15 surrendered50.5× the bet
571010♦J♠ 209♣8♥ 1700× the bet
56104♠A♦10♣K♥ 258♣7♣ 15202× the bet
5510A♥2♥ 133♣10♣9♦ 22 bust00× the bet
54105♥7♠8♥ 206♥4♣7♥ 17 doubled00× the bet
53103♠7♣K♣ 20Q♥8♥ 1800× the bet
52104♣2♠3♠A♠ 209♣2♥8♣ 19 doubled00× the bet
51105♥10♦4♦ 193♦J♠ 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
390efaa9d707ea8022d6e56b27dc1911b798a42553576fea2adf2a4de3ecf235
Seed
28c14698f012b024b8ce53669911a4eee3583ffdd3d5fd689511ec78b70b01ab SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
b104440f8d5a2e5fb7ef55b7e71dc312
Commitment
Batch 71,182, Merkle root a6a02e9699c590a60dc3808c76b9dabd72812de505dd98707c3f9bd79fd0b63b. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 782d171d7bd987fdc68daca59a27e154f0fb44c2cd5dbbe43a3c094ba101ce66
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.