Degen Protocol
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Session against the house

Blackjack

ended Play money · 021b686ff96c0c49b07e3c8e4ab95f52

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,360 play
Returned
2,345 play
Bettor's net
-15 play
Return
99.36%

Results by hand

Final
Hands
200
played
Pace
21.2/min
overall 19.3/min
Biggest swing
+30
Seat 1 · hand 18

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

SeatNetRateStreak
gbb-15-7.5 play/100lost 3

Last hands

  1. 200Even0
  2. 199Even0
  3. 198Even0
  4. 197Even0
  5. 196Seat 1+15
  6. 195Even0
  7. 194Seat 1+15
  8. 193Even0
  9. 192Seat 1+20
  10. 191Seat 1+20
  11. 190Even0
  12. 189Even0

The hands

Newest first
#BetDealerHandsPaidChecked
50102♥3♠Q♥J♠ 253♠2♥5♠4♠ 14202× the bet
4910K♦6♥7♦ 235♥5♥Q♠ 20202× the bet
4810Q♥9♥ 198♣J♠ 1800× the bet
47104♣10♣6♥ 2010♥4♦ 1400× the bet
4610J♥A♥ 215♣K♦ 1500× the bet
4510J♥5♦4♠ 194♦2♥3♣J♥ 19101× the bet
44106♣6♦4♦4♦ 205♣3♣3♥4♣ 1500× the bet
4310A♣3♣ 14A♥J♦ 21 blackjack252.5945× the bet
42102♦K♣5♠ 177♦4♣6♣ 17 doubled202× the bet
41105♥3♠6♠5♣ 19J♠K♦ 20202× the bet
4010A♦9♥ 20Q♦10♣ 20101× the bet
39105♠K♦7♣ 223♥K♠ 13202× the bet
3810Q♣4♦A♦4♦ 194♥4♠J♣ 1800× the bet
371010♦9♣ 196♠Q♣ 16 surrendered50.5× the bet
36104♣4♠ 8A♠Q♥ 21 blackjack252.5945× the bet
35102♣9♣Q♠ 21Q♣6♥ 1600× the bet
3410A♦10♣ 21Q♠7♥ 1700× the bet
3310A♠10♠ 216♠Q♣ 1600× the bet
32109♥3♠A♠8♥ 21Q♥J♦ 2000× the bet
31107♠10♥ 177♠10♣ 17101× the bet
30108♥K♥ 189♣2♦4♥ 15 doubled00× the bet
29109♦A♥ 208♣4♦K♣ 22 bust00× the bet
28109♦4♣2♠7♠ 222♠3♥3♦K♠ 18202× the bet
27105♠K♣J♠ 2510♠9♣ 19202× the bet
26105♦3♦3♣A♠7♦ 197♦2♥A♦ 20 doubled404× the bet
251010♦6♥4♣ 20Q♦10♠ 20101× the bet
2410K♦7♥ 176♦5♦3♥ 14 doubled00× the bet
2310Q♦2♠Q♠ 224♥9♦A♥5♠ 19202× the bet
22106♠10♠5♣ 216♥J♣ 1600× the bet
21109♦K♦ 199♠10♣ 19101× the bet
2010Q♠9♠ 19Q♦5♣ 15 surrendered50.5× the bet
1910J♥5♥9♥ 242♦2♥A♦J♦3♠ 18202× the bet
18103♦K♥9♦ 222♥7♦8♥ 17 doubled2♦5♦6♥ 13606× the bet
171010♣8♠ 18K♣Q♠ 20202× the bet
16103♥4♣J♣ 177♠10♥ 17101× the bet
15104♣4♣K♠ 189♠8♥ 1700× the bet
14103♥4♠K♥ 174♣7♣9♠ 20 doubled404× the bet
13102♦8♣A♦ 2110♥8♥ 1800× the bet
1210K♠Q♦ 207♣A♠8♦3♣ 1900× the bet
11102♠Q♥Q♥ 225♥Q♥ 15202× the bet
10104♣2♦7♦4♠ 177♣4♣6♣ 17 doubled202× the bet
9108♦10♦ 189♦4♠3♦10♦ 26 bust00× the bet
8102♦8♦10♦ 202♥3♥2♥10♦ 1700× the bet
7102♠10♥9♣ 217♦10♣ 1700× the bet
610J♦6♥4♥ 20Q♠4♥6♥ 20101× the bet
5102♥4♣6♥4♥2♥ 1810♠J♥ 20202× the bet
4107♥5♥A♥4♣ 178♣K♥ 18202× the bet
3102♣J♥2♦J♣ 24A♦3♥8♠A♠ 13202× the bet
2107♦2♠A♥ 205♥J♦2♣ 1700× the bet
1106♠8♥10♥ 249♦8♠ 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
55bca0f16493e23d9f0f577b72a2ba2a32fcf5e0e3edbdb2e292b5a3f587fb54
Seed
615807770e8b282c0913869e44fa75beb094b955fc84800dd3535f0126d04991 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
cd7cbc6e2830726f09ec068c9dc39e88
Commitment
Batch 66,786, Merkle root 0a14e7f2b619ca522b960b20db19230dbd1ede72b1219a78e1e73b842acb5330. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. d670d988a116b7d8ae1f76fd8814629904ec5520b8eda408bc0d1c2dcf48834c
  2. b0fe4e055cd9a3350fc5d028b031e510f096d2c7a8274bc8940f1ec33ea2dc27
  3. 065db894499de99f1a99b06d5af920b4606f0ce26d2425be58f4fa04b1f6d493
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.