Degen Protocol
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Session against the house

Blackjack

ended Play money · 2c42f6f423616d339b9c7b8328d1a307

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,350 play
Returned
2,130 play
Bettor's net
-220 play
Return
90.64%

Results by hand

Final
Hands
200
played
Pace
20.2/min
overall 20.0/min
Biggest swing
-40
Seat 1 · hand 158

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

SeatNetRateStreak
gbb-220-110.0 play/100won 2

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50103♥10♣9♦ 229♦4♠ 13202× the bet
4910Q♥6♠K♦ 26K♣4♦6♠ 20202× the bet
4810K♥3♠ 132♦2♣K♦Q♠ 24 bust00× the bet
47108♥5♣ 13J♣4♦J♦ 24 bust00× the bet
46103♣6♣2♦J♦ 213♠2♠J♦ 1500× the bet
4510K♥K♣ 202♥K♥K♣ 22 bust00× the bet
4410J♥5♣ 15J♠A♦ 21 blackjack252.5945× the bet
431010♥9♣ 199♣5♦K♥ 24 bust00× the bet
42103♣5♦2♥3♣2♠2♠ 179♥4♠ 1300× the bet
4110A♥5♣3♣ 193♣4♦8♥3♥ 1800× the bet
4010J♠7♠ 174♠A♦8♠6♣ 19202× the bet
391010♠K♥ 208♦J♣ 1800× the bet
38104♠4♠6♥2♥A♠ 1710♠9♥ 19202× the bet
3710A♣Q♦ 213♥A♣ 1400× the bet
3610A♣3♦3♦ 172♠J♠4♣A♦ 17101× the bet
35103♦K♠7♥ 204♠5♠2♠ 11 doubled00× the bet
3410J♦4♣Q♠ 24A♣8♠ 19202× the bet
33109♠5♥4♦ 187♥A♦8♠3♣ 19202× the bet
3210K♠3♥J♥ 23Q♣7♦ 17202× the bet
31107♥K♣ 177♥5♣J♠ 22 bust00× the bet
3010A♥K♠ 21Q♠8♦ 1800× the bet
2910A♦4♠A♣9♦3♦ 18J♠9♦ 19202× the bet
28102♥J♦9♣ 21Q♦2♥8♣ 2000× the bet
27108♣2♠ 104♣8♥3♣A♥Q♦ 26 bust00× the bet
26102♠9♠2♣6♣ 19Q♠Q♥ 20202× the bet
25108♠3♥10♠ 21A♦7♥ 1800× the bet
24102♦5♦5♠3♣6♠ 216♦2♥7♦ 1500× the bet
23108♣K♥ 1810♦8♥ 18101× the bet
2210J♣2♣ 1210♣2♣3♠Q♦ 25 bust00× the bet
2110K♦8♦ 1810♣K♠ 20202× the bet
20103♠Q♠ 1310♠A♥ 21 blackjack252.5945× the bet
1910Q♥Q♥ 20K♦8♦ 1800× the bet
18102♠9♥9♦ 20A♣6♠3♥ 20101× the bet
1710A♦8♣ 198♦4♣Q♦ 22 bust00× the bet
16108♥5♣ 133♦K♦J♦ 23 bust00× the bet
15105♠6♥K♠ 212♦J♦ 1200× the bet
14109♣A♣ 204♣3♥7♠K♥ 24 bust00× the bet
1310Q♣5♦3♣ 183♦4♦7♣4♥ 18101× the bet
12108♦10♦ 187♠J♦ 1700× the bet
11109♣K♥ 19K♥K♠ 20202× the bet
101010♥5♦4♦ 19J♥3♣8♥ 21202× the bet
91010♥Q♣ 202♠9♥A♥ 12 doubled00× the bet
8106♣3♦4♠10♦ 2310♦7♦ 17202× the bet
7107♦6♥5♥ 189♠Q♣ 19202× the bet
6109♥3♦7♥ 19J♦5♥2♣ 1700× the bet
5103♣4♣3♥A♣ 2110♠4♥ 1400× the bet
410J♣J♣ 203♠10♥K♥ 23 bust00× the bet
3102♦6♠ 810♥A♣ 21 blackjack252.5945× the bet
2106♥K♣9♣ 25Q♣8♥ 18202× the bet
110J♥10♦ 209♠10♥ 1900× 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
7b50ccdca380717799416606fff6ecc09823e8060915a9087156dda85f5b3352
Seed
a96ccf02eaff86679d2c20ebbc4283c24b9a68ab972305094a9645c832e3e5f6 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
d245dc77bffd2c5efc25ca4035a8d314
Commitment
Batch 66,907, Merkle root 262db394c1ff683fb4daf6821a45fba9221a9eb8c221dbe2788ef8b8c3f4f27c. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 65f1f6dd1f011cfe05c3094ea63cff6dc78c5291e98a0c6b126b5b684d8cbefe
  2. 88364a8297fcd982d1edbd37636b1e3a342dde393ea0e7cdd2f2bc780a769f1d
  3. 09f5771cfb8b6f0efed5fe91acae5239c3d8c92a5e86e7c49851a0479ee18f7f
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.