Degen Protocol
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Session against the house

Blackjack

ended Play money · 8f3f14b38e290c1f386a470b8cfda9d1

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,230 play
Returned
2,140 play
Bettor's net
-90 play
Return
95.96%

Results by hand

Final
Hands
200
played
Pace
21.3/min
overall 20.7/min
Biggest swing
+30
Seat 1 · hand 89

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

SeatNetRateStreak
gbb-90-45.0 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
5010K♦K♦ 208♦Q♦ 1800× the bet
49106♥7♠ 13A♥Q♣ 21 blackjack252.5945× the bet
4810J♠8♠ 189♥3♠2♥10♠ 24 bust00× the bet
471010♠8♣ 18J♣A♣ 21 blackjack252.5945× the bet
46107♠6♥ 136♣J♦8♣ 24 bust00× the bet
45104♦8♦ 12A♣K♦ 21 blackjack252.5945× the bet
44107♣8♥10♦ 255♦4♥2♣Q♥ 21202× the bet
43109♠9♥ 18Q♣5♥5♣ 20202× the bet
42106♥2♦10♣ 18Q♠6♥ 1600× the bet
4110Q♠J♥ 208♦5♥J♥ 23 bust00× the bet
4010Q♦4♥A♠10♥ 258♣Q♠ 18202× the bet
39106♣10♠3♦ 19Q♣K♦ 20202× the bet
38109♠8♣ 174♠5♣Q♠ 19202× the bet
37104♦8♠9♦ 21J♥K♥ 2000× the bet
36107♣7♣ 144♠8♦K♥ 22 bust00× the bet
3510K♥Q♣ 20K♥2♠8♥ 20101× the bet
341010♥J♦ 20Q♠5♦ 15 surrendered50.5× the bet
33107♥3♥7♠ 178♠9♥ 17101× the bet
3210Q♥7♥ 175♠6♣2♥ 13 doubled00× the bet
31103♠5♣J♥ 187♦J♣ 1700× the bet
3010K♦5♦ 158♥7♦ 15 surrendered50.5× the bet
29109♦9♣ 1810♠8♣ 18101× the bet
2810K♣Q♣ 202♥6♣5♦10♠ 23 bust00× the bet
27109♦9♦ 185♦4♥10♣ 19202× the bet
26102♠2♠J♠9♣ 23J♥4♦ 14202× the bet
25105♦5♥8♦ 189♦2♥6♦ 17 doubled00× the bet
2410K♠Q♣ 208♦7♠ 15 surrendered50.5× the bet
2310A♣6♥ 173♥3♥9♥A♠K♥ 26 bust00× the bet
2210A♥8♦ 199♠5♥2♦5♥ 21202× the bet
2110K♦7♠ 172♥J♦K♣ 22 bust00× the bet
20106♠3♥6♦J♠ 2510♦4♥ 14202× the bet
191010♣A♥ 21A♦10♥ 21 blackjack101× the bet
18104♦2♦K♠9♥ 254♥A♥3♣ 18202× the bet
171010♣8♦ 1810♠J♦ 20202× the bet
1610J♣K♠ 202♥5♣5♠K♣ 22 bust00× the bet
151010♠2♦ 124♣5♣5♦A♦8♠ 23 bust00× the bet
1410Q♠7♠ 17Q♥J♦ 20202× the bet
1310J♠6♠Q♣ 267♠4♣6♥ 17 doubled404× the bet
12103♠6♦6♥A♥9♥ 25A♠8♦ 19202× the bet
11107♣10♥ 1710♣Q♦ 20202× the bet
10108♦8♦5♠ 217♦6♠6♣ 1900× the bet
910J♥10♥ 20J♥K♦ 20101× the bet
8106♣8♣8♥ 225♠K♦ 15202× the bet
7105♣7♠J♦ 22Q♣5♠ 15202× the bet
6106♦K♣9♠ 256♠J♣ 16202× the bet
5108♠10♦ 189♥6♣7♠ 22 bust00× the bet
410J♥5♥6♠ 217♥10♦ 1700× the bet
3103♥3♠J♠10♠ 26K♥4♥ 14202× the bet
2106♣10♥K♦ 268♣J♠ 18202× the bet
1107♣J♠ 17A♦3♥6♠ 20202× 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
39913445eaef6358019e9f364c0a2eae8d7e0a78da639ab6b7737108f290af12
Seed
3704e588e9d63daf7352eb5685a5058c4218de01d10c6fc66e2574fe48b749c0 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
43cecd1ab576f360ded44e51004d9bbb
Commitment
Batch 72,044, Merkle root 4d8ce50277bb11182f22d899c3bc9239cf84049ac99cb8bc189622918cae5735. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. eadbb8a0dbd8602581b1ed178df8ae546787dd37eae79a49aa1b8f0b354a7570
  2. 4f2de5323af69c95026d513cc83a9e0cb8c6d7030af9785b2daca04fa015e05c
  3. 437495fe8c669dcd75d12e7afd4a66a445b21db084ff48cd387326ed8aaf452c
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.