Degen Protocol
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Session against the house

Blackjack

ended Play money · de14735c0a75ac7d711fac9bdec83ab5

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,200 play
Returned
2,185 play
Bettor's net
-15 play
Return
99.32%

Results by hand

Final
Hands
200
played
Pace
19.1/min
overall 19.9/min
Biggest swing
+20
Seat 1 · hand 21

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

SeatNetRateStreak
gbb-15-7.5 play/100won 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50109♦3♠9♣ 213♦5♦Q♠ 1800× the bet
4910Q♦10♣ 205♦10♣ 15 surrendered50.5× the bet
48109♦6♥Q♥ 255♣4♣6♠3♣ 18202× the bet
47108♠6♣6♦ 208♦5♥5♦ 1800× the bet
46108♣10♦ 185♦3♥3♠A♥8♣ 20202× the bet
4510J♦2♥5♦ 17Q♥3♥7♠ 20202× the bet
4410K♦J♥ 20A♦K♦ 21 blackjack252.5945× the bet
43104♥7♥2♦10♦ 23A♠6♦10♠ 17 doubled404× the bet
42105♣3♥K♠ 18J♦5♣ 1500× the bet
41109♠J♦ 19A♣8♥ 19101× the bet
4010J♠3♠ 13A♠4♦7♠K♠ 22 bust00× the bet
39103♠A♦J♦8♦ 225♦Q♣ 15202× the bet
3810A♥K♣ 217♥6♦ 1300× the bet
3710Q♣7♣ 179♣5♦3♣ 17101× the bet
361010♥9♥ 194♣4♥6♦7♣ 21202× the bet
3510Q♥8♣ 182♥8♦7♠ 1700× the bet
3410A♠K♥ 219♥4♥ 1300× the bet
33105♥8♣5♠ 18J♥9♦ 19202× the bet
32104♦7♣A♠8♠ 20A♦8♦ 1900× the bet
31109♣A♣ 206♠J♦ 16 surrendered50.5× the bet
30102♣2♦9♠Q♦ 235♠3♣6♣ 14202× the bet
29108♣J♣ 188♠5♠A♦2♠5♣ 21202× the bet
28105♦7♦K♦ 226♠K♥ 16202× the bet
271010♣8♦ 188♥J♣ 18101× the bet
2610K♣K♦ 20K♠J♠ 20101× the bet
25105♦10♥4♥ 19Q♠6♠ 1600× the bet
24108♠K♥ 185♣6♣A♣ 12 doubled00× the bet
23105♦3♠Q♥ 183♠J♠ 1300× the bet
221010♣5♠9♦ 243♥4♦6♣5♦ 18202× the bet
21103♥2♠5♥10♣ 205♦6♠10♣ 21 doubled404× the bet
20107♠3♥6♦6♥ 226♠3♦2♥6♥ 17202× the bet
1910A♣K♦ 2110♦A♣ 21 blackjack101× the bet
18103♦7♥6♣8♠ 24Q♥10♥ 20202× the bet
17104♦K♥6♣ 20K♣6♠ 1600× the bet
16105♦2♦4♦3♦8♠ 226♣9♦ 15202× the bet
15104♣Q♦9♦ 234♠3♠6♦ 13202× the bet
14108♦9♣ 175♥K♣6♥ 21202× the bet
1310Q♦Q♦ 20Q♦7♣ 1700× the bet
121010♦9♣ 198♣4♥J♠ 22 bust00× the bet
11102♣3♥Q♦3♠ 189♠7♦ 1600× the bet
10107♠3♥2♠A♥4♠ 173♣J♠4♥ 17101× the bet
9108♥2♠4♣A♠5♥ 20A♥6♠7♥3♠ 1700× the bet
810Q♠2♠Q♥ 22K♠J♥ 20202× the bet
710A♦7♠ 18K♠5♣7♦ 22 bust00× the bet
6102♥3♥7♠2♣10♣ 24Q♦5♠ 15202× the bet
510A♦J♥ 21J♦6♥ 1600× the bet
410J♥4♣6♥ 2010♠Q♠ 20101× the bet
310K♥2♦9♥ 218♦6♠6♥ 2000× the bet
2108♣Q♦ 1810♥2♥A♦9♥ 22 bust00× the bet
1109♣K♣ 193♦10♦8♥ 21202× 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
20b156aadb105cf1b4178afd7238456ab4f9216e937a4b7b62917e213d7a98f7
Seed
76e100e832b1a8d16e17d0a89140ac561e455406c08c5a0d684bb3bac05fc64e SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
d0834de3f44163691080c291ff2bfa2e
Commitment
Batch 65,897, Merkle root eab2f5c621961267637aad2a1f469b7c9b57f5b4f6116b7eded8782c7fe21d6b. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. d9a6e1be6eb72c7228c9d19a1072723c975dc4acdf00a6e28cbeb940261c3563
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.