Degen Protocol
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Session against the house

Blackjack

ended Play money · 2b1c3ad41e5635acc07055b21f225a46

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,150 play
Returned
2,140 play
Bettor's net
-10 play
Return
99.53%

Results by hand

Final
Hands
200
played
Pace
20.4/min
overall 20.6/min
Biggest swing
-20
Seat 1 · hand 3

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

SeatNetRateStreak
gbb-10-5.0 play/100won 2

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50103♥A♣A♦7♣5♣ 174♠2♠9♠ 1500× the bet
49109♣K♣ 192♠2♦9♥8♠ 21202× the bet
481010♣K♥ 2010♠K♦ 20101× the bet
47106♦6♥Q♠ 225♥6♠6♦ 17 doubled404× the bet
46108♦5♣4♣ 17K♥5♥5♥ 20202× the bet
4510K♣K♣ 20Q♦8♠ 1800× the bet
44108♠K♥ 18J♠A♦ 21 blackjack252.5945× the bet
43105♦J♥K♦ 252♥6♦3♦10♦ 21202× the bet
42105♥5♣Q♠ 209♣7♣ 1600× the bet
41109♥4♦ 133♠2♠Q♦9♣ 24 bust00× the bet
40109♥K♥ 196♣6♥4♥6♠ 22 bust00× the bet
3910Q♥Q♠ 203♦5♦Q♠ 1800× the bet
38102♥J♥5♦ 17J♣J♣ 20202× the bet
37106♦4♣2♦3♠J♥ 259♥J♦ 19202× the bet
3610K♥10♣ 209♠7♦ 16 surrendered50.5× the bet
35104♣8♣J♥ 22Q♣6♠ 16202× the bet
3410J♥2♦4♣A♥ 17A♦6♦4♦ 21202× the bet
33109♣A♥ 208♠6♦9♦ 23 bust00× the bet
32107♠A♥ 184♠3♣J♠ 1700× the bet
31104♦10♣4♥ 1810♣J♠ 20202× the bet
30109♥4♠ 13A♠J♦ 21 blackjack252.5945× the bet
2910K♣4♦2♣Q♣ 263♦4♠4♦7♥ 18202× the bet
28107♣2♥ 9K♦4♣A♣8♦ 23 bust00× the bet
2710J♦5♣7♣ 229♥5♥A♣3♠ 18202× the bet
26109♣3♣3♦10♠ 259♠Q♠ 19202× the bet
25107♥2♥ 9J♦A♥ 21 blackjack252.5945× the bet
24105♠7♣8♣ 20A♥2♥4♣5♠ 1200× the bet
2310J♣4♥5♥ 199♣A♥ 20202× the bet
22107♥7♥ 148♦4♣J♠ 22 bust00× the bet
21106♠4♣4♥2♦4♦ 203♣Q♥ 1300× the bet
2010A♥5♥ 1610♠3♣J♥ 23 bust00× the bet
191010♦7♠ 176♥8♦K♥ 24 bust00× the bet
18106♣9♥5♠ 202♠J♣ 1200× the bet
17105♥2♥A♥ 189♠J♣ 19202× the bet
16102♠7♠8♦ 1710♠8♦ 18202× the bet
15104♦A♠8♦4♥ 178♣6♠ 1400× the bet
14109♥A♥ 206♠7♠K♣ 23 bust00× the bet
13104♥6♣5♥A♣Q♣ 266♣J♣ 16202× the bet
1210Q♦2♦ 124♥2♣K♥7♣ 23 bust00× the bet
1110Q♠K♣ 20K♠4♦J♠ 24 bust00× the bet
101010♣8♦ 182♥Q♥4♦9♠ 25 bust00× the bet
9109♠8♣ 173♣J♣K♣ 23 bust00× the bet
8108♥2♠5♥9♠ 245♠8♣8♦ 21202× the bet
710Q♥3♠5♥ 18J♥Q♣ 20202× the bet
61010♦2♦ 124♠K♣8♥ 22 bust00× the bet
510J♠2♦ 1210♠6♠ 16 surrendered50.5× the bet
4102♠A♣9♥8♠ 207♣J♦ 1700× the bet
3106♦Q♠4♣ 20A♣7♦10♣ 18 doubled00× the bet
210Q♠4♥ 145♣K♦ 15 surrendered50.5× the bet
110Q♠4♦8♦ 224♥10♥3♣ 17202× 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
f838d1d0d5aa3001784d2910394af34a94d91a8eb7c39b29641a2afcd9217f23
Seed
34dd278efe66af4359b0c3e883eafedc3ffd48316556e8d74d920a12022a52cf SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
4c868d11ff4870e6cf5c3893c0826d54
Commitment
Batch 69,554, Merkle root cf6a14c1b86a915ba1ba30dbcabd81749f0844610c6eec0fa023bc82df6ec06b. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 6722370a6b98644b7c774a2a57ba3c6d29016effb53c57a022de2a58b212c3c0
  2. cb9e9dda73c5f07df5725d44f51543b9cdd9853ddcd896fc60abe7fdc46cf642
  3. 8bdf47c838dda4e337eee46744d6e1841cbbdd4c8248bde024de241a5158f774
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.