Degen Protocol
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Session against the house

Blackjack

ended Play money · a32b5f9bc8b630e4fde9115b83aa056d

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,300 play
Returned
2,250 play
Bettor's net
-50 play
Return
97.83%

Results by hand

Final
Hands
200
played
Pace
18.4/min
overall 20.4/min
Biggest swing
-30
Seat 1 · hand 120

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

SeatNetRateStreak
gbb-50-25.0 play/100won 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
100105♠3♣8♠K♣ 265♣6♦Q♥ 21 doubled404× the bet
9910K♦A♠ 216♥Q♣ 1600× the bet
9810Q♣8♠ 182♥10♦8♥ 20202× the bet
9710K♥Q♦ 20Q♠J♥ 20101× the bet
9610J♣Q♥ 20Q♥Q♥ 20101× the bet
95109♥10♥ 195♣9♣6♥ 20202× the bet
94107♠A♥ 188♣10♠ 18101× the bet
9310Q♠Q♦ 207♠6♠7♦ 20101× the bet
92108♦9♥ 174♣9♠10♠ 23 bust00× the bet
91103♠2♦6♦K♥ 21Q♥J♠ 2000× the bet
90108♦J♠ 183♥7♠10♠ 20 doubled404× the bet
8910K♥7♠ 176♠2♣6♦K♦ 24 bust00× the bet
8810J♣5♣4♥ 198♥K♠ 1800× the bet
8710J♦K♥ 203♣J♥A♣6♣ 20101× the bet
86109♣8♦ 17J♦2♥J♥ 22 bust00× the bet
8510J♣4♣10♦ 24K♥7♠ 17202× the bet
8410A♦4♥ 156♣7♥10♣ 23 bust00× the bet
83103♣8♠K♥ 21K♦8♣ 1800× the bet
82103♠3♠9♦10♦ 259♥A♠ 20202× the bet
81108♣6♥7♣ 219♦K♥ 199♣2♣Q♣ 21 doubled202× the bet
8010J♦10♠ 202♣5♦4♦3♣K♠ 24 bust00× the bet
79107♦3♣2♥9♠ 21A♣3♣7♣ 21101× the bet
78105♥6♠9♣ 204♦8♦ 1200× the bet
7710Q♦4♣ 14A♠10♥ 21 blackjack252.5945× the bet
761010♦J♦ 205♦10♣ 15 surrendered50.5× the bet
7510Q♥3♠ 13Q♥5♦ 15 surrendered50.5× the bet
74102♣K♥6♣ 18K♠10♠ 20202× the bet
73104♠8♠J♦ 222♠J♠ 12202× the bet
72109♦K♠ 199♦4♥6♥ 19101× the bet
71106♠Q♦K♠ 26K♦Q♦ 20202× the bet
70102♠K♦J♥ 229♠J♣ 19202× the bet
6910J♥Q♣ 204♥J♥8♦ 22 bust00× the bet
68104♦8♥4♠K♥ 269♣4♦ 13202× the bet
67102♥Q♥3♠Q♥ 253♠9♠7♦ 19202× the bet
6610Q♠10♠ 207♦10♣ 1700× the bet
65103♣2♥4♠9♥ 18J♠6♥ 1600× the bet
64103♥A♠3♦ 17Q♣4♦ 1400× the bet
63106♠8♥2♦3♣ 197♦2♥3♦ 12 doubled00× the bet
6210A♦6♣ 1710♦Q♣ 20202× the bet
61103♣3♦3♦3♣10♣ 228♠9♥ 17202× the bet
6010Q♠Q♣ 20K♣10♠ 20101× the bet
59103♦8♠6♣ 17Q♣3♠ 1300× the bet
5810K♥A♦ 213♣J♣ 1300× the bet
57107♥5♣3♦2♠ 179♣7♠5♦ 21202× the bet
56102♣9♦9♦ 208♥7♦ 1500× the bet
55102♣10♣Q♣ 228♦K♠ 18202× the bet
541010♠10♦ 205♦K♥ 15 surrendered50.5× the bet
53102♠5♥9♦K♦ 2610♦K♣ 20202× the bet
5210K♣J♦ 205♠10♣ 15 surrendered50.5× the bet
5110J♣4♦ 144♥Q♦10♥ 24 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
5ec9408ac76fddc0261db6450775418272f18ca0596f94c06b1b93718b8d4da2
Seed
277a6ef03aa80288f7b6782172ecb2d903a40540dd3a6f617c3d351280fbdb36 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
167383fa91e6a1fed32b3238e14b3e9d
Commitment
Batch 65,864, Merkle root 4a2dbea1567337a824feb8a230d7b568140719932589ab361ca7092d276e01fc. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 2f2aaadbd0d92800a86807a446a59de41ced84e1b4010560fc18b12bc025bac8
  2. 30088849dab4aea3f5592806ac514b6ef19716837d6ef2eeeab59227ad98cdd6
  3. 7d05c06abd74d6b5cc9c698b23a02356bab8f9f135f97988522805b543825a51
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.