Degen Protocol
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Session against the house

Blackjack

ended Play money · 31a9ecb19222f5bcaffc323552a71f0e

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,230 play
Returned
2,185 play
Bettor's net
-45 play
Return
97.98%

Results by hand

Final
Hands
200
played
Pace
22.3/min
overall 20.6/min
Biggest swing
+30
Seat 1 · hand 13

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

SeatNetRateStreak
gbb-45-22.5 play/100won 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50104♦J♣8♥ 227♦K♥ 17202× the bet
4910K♣3♥3♦5♣ 213♦5♠Q♦ 1800× the bet
4810Q♥2♣4♠J♣ 26K♣8♠ 18202× the bet
4710K♠4♠9♣ 235♠7♦7♠ 19202× the bet
46107♥Q♣ 179♠Q♥ 19202× the bet
45103♠7♥J♣ 202♣Q♦2♠ 1400× the bet
4410A♦3♠5♥ 195♥7♣9♥ 21202× the bet
43108♣9♥ 179♥K♣ 19202× the bet
42102♣6♥8♠7♣ 2310♣2♣3♦ 15202× the bet
4110A♥2♥Q♠2♠7♣ 22K♦10♠ 20202× the bet
4010Q♦9♠ 194♦6♦5♠Q♥ 25 bust00× the bet
39108♣3♣4♣K♠ 255♥K♦2♦ 17202× the bet
38102♣6♣A♠ 196♣A♣K♣ 1700× the bet
37103♥9♣J♦ 227♠3♦2♦ 12 doubled404× the bet
36107♥6♣J♥ 236♥9♣6♣ 21202× the bet
35107♦6♣4♦ 17A♥2♠ 13A♦4♦ 1500× the bet
34105♠Q♥5♠ 208♦5♥ 1300× the bet
33108♠A♦ 19K♥4♥Q♥ 24 bust00× the bet
32106♥10♣5♣ 213♦2♥3♠6♣ 1400× the bet
3110J♠A♣ 215♠10♣ 1500× the bet
3010Q♦4♥K♥ 246♦3♦K♣ 19202× the bet
29104♦Q♣A♣6♦ 213♠9♦ 1200× the bet
28104♦Q♥ 14Q♦A♣ 21 blackjack252.5945× the bet
2710K♥6♣ 163♠K♦2♥J♣ 25 bust00× the bet
26103♠Q♠ 13K♣2♥10♣ 22 bust00× the bet
25105♠2♥K♠ 17J♠3♣ 1300× the bet
24109♣Q♣ 199♦3♦A♠K♥ 23 bust00× the bet
2310K♦8♠ 18Q♥K♦ 20202× the bet
2210Q♥4♣2♥6♥ 227♦7♣4♠ 18202× the bet
21104♦8♣2♥6♠ 208♦J♦ 1800× the bet
20108♥A♦ 194♠Q♦2♣6♦ 22 bust00× the bet
1910K♦3♠8♠ 219♣K♦ 1900× the bet
1810A♥8♠ 19J♦10♣ 20202× the bet
17104♥10♥9♣ 238♦9♠ 17202× the bet
161010♣4♣ 14A♥10♣ 21 blackjack252.5945× the bet
15107♣3♥4♥10♥ 24J♥7♣ 17202× the bet
14103♥J♦10♠ 23A♠2♥ 13A♣10♠ 21404× the bet
13103♥9♣2♣K♣ 243♠8♠8♦ 19 doubled3♦2♦5♣5♥ 15606× the bet
12104♦J♣K♥ 249♠10♥ 199♣4♠ 13404× the bet
11102♣9♠8♠ 1910♥8♦ 1800× the bet
10107♦J♥ 176♠A♠J♠ 17101× the bet
9102♠4♣ 6A♥K♠ 21 blackjack252.5945× the bet
810A♣J♣ 219♥8♠ 1700× the bet
7102♥2♦9♦10♥ 23Q♦4♠ 14202× the bet
610J♦A♦ 212♣5♣ 700× the bet
51010♠10♠ 20Q♦Q♠ 20101× the bet
4107♣7♦ 14A♠5♦6♥4♦7♠ 23 bust00× the bet
3105♦6♦4♠8♠ 238♦9♣ 17202× the bet
210K♥2♠J♣ 223♦8♣10♠ 21 doubled404× the bet
11010♠4♥ 145♠10♠ 15 surrendered50.5× 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
30c74d2d1bdf7d56ba813ba3cec7ecc35a42f7e29c9649434194248d6b7c7323
Seed
c1a6f0815bc141763e32736b3bbe0b1b934489f16f82498cc8c0de0d73309d13 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
7cc9b70622a79e2cb069ae0931f449ec
Commitment
Batch 71,786, Merkle root 2894b5190f1de319004dcaf7a166ed5992cb9d2ab3626c12b761e55f27440e9f. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 0df6418f66bb5ca423284464692d1e63ed085e6e415eba08c4a0c82b3c75c156
  2. 66ec63119c8be94ee863093e21233df837812c23043e36408dcafab9d27b0f81
  3. f4a31e285a20a34cd54e58a31a49c8290771c97e82a189756c50087708e18608
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.