Degen Protocol
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Session against the house

Blackjack

ended Play money · 5aaddca85e926a930e980b335ad13171

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,200 play
Returned
1,970 play
Bettor's net
-230 play
Return
89.55%

Results by hand

Final
Hands
200
played
Pace
15.8/min
overall 19.0/min
Biggest swing
-40
Seat 1 · hand 163

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

SeatNetRateStreak
gbb-230-115.0 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50103♠J♣7♥ 202♦K♣3♦ 1500× the bet
49106♦7♠K♠ 234♠9♣ 134♣J♥ 14404× the bet
481010♠J♠ 20Q♥A♣ 21 blackjack252.5945× the bet
4710J♠6♣ 162♠A♣9♠K♥ 22 bust00× the bet
4610J♥J♥ 204♥A♦5♥ 20101× the bet
45109♠J♥ 19J♠3♦7♣ 20202× the bet
441010♥7♣ 173♠2♠8♠6♥ 19202× the bet
43107♦4♣5♥K♣ 264♣K♣4♦ 18202× the bet
42105♣5♥ 1010♦A♦ 21 blackjack252.5945× the bet
41102♠Q♦2♥6♦ 208♠4♥8♥ 20101× the bet
40107♥9♥5♥ 21Q♣7♠ 1700× the bet
39106♥4♦J♥ 205♥6♥3♠ 14 doubled00× the bet
3810J♥9♠ 193♠2♠Q♣A♦10♥ 26 bust00× the bet
37106♣A♣ 174♣3♣K♦ 17101× the bet
36107♦K♦ 17Q♦Q♣ 20202× the bet
3510A♣Q♣ 21Q♦8♠ 1800× the bet
34109♠Q♥ 19Q♣2♣10♥ 22 bust00× the bet
3310K♠4♣ 144♠9♠Q♠ 23 bust00× the bet
3210J♦Q♣ 207♣4♠10♦ 21 doubled404× the bet
31106♣K♥7♣ 2310♦4♣ 14202× the bet
30103♥K♦ 13A♠K♠ 21 blackjack252.5945× the bet
2910K♦8♥ 188♥5♠3♥5♥ 21202× the bet
281010♥8♥ 189♣A♣ 20202× the bet
2710K♥5♠ 15K♣5♣ 15 surrendered50.5× the bet
261010♣Q♦ 20K♦9♥ 1900× the bet
2510K♣J♣ 209♠J♦ 1900× the bet
24106♣K♥K♦ 266♦3♥9♠ 18 doubled404× the bet
23105♥9♦A♠Q♥ 2510♠K♦ 20202× the bet
2210Q♦K♠ 20Q♠6♠ 16 surrendered50.5× the bet
2110Q♥Q♣ 208♦9♠ 1700× the bet
2010A♣5♦7♥8♥ 21J♦K♦ 2000× the bet
1910K♣5♥ 159♣4♥9♥ 22 bust00× the bet
18102♠5♥K♣ 17Q♦9♠ 19202× the bet
17106♦Q♣4♠ 20K♦6♣ 1600× the bet
16103♦8♦A♥4♥10♠ 267♠6♣ 13202× the bet
1510Q♦2♥ 12Q♠4♣10♣ 24 bust00× the bet
14102♠K♦2♥8♥ 229♥5♥ 14202× the bet
13106♣Q♥6♦ 22A♣8♦ 19A♠2♦ 13404× the bet
121010♦7♠ 17J♦6♦ 16 surrendered50.5× the bet
1110Q♣J♣ 205♦10♦ 15 surrendered50.5× the bet
1010J♣7♥ 176♣5♠3♣ 14 doubled00× the bet
910Q♥4♥ 14Q♦5♦ 15 surrendered50.5× the bet
81010♥K♦ 206♦A♥5♥Q♥ 22 bust00× the bet
7102♠10♥4♣K♥ 26J♥Q♠ 20202× the bet
610A♠10♥ 2110♦7♣ 1700× the bet
510K♥9♠ 19K♦J♣ 20202× the bet
4109♥6♠K♣ 256♠8♠3♠ 17202× the bet
310A♣4♠J♠Q♦ 252♦J♦2♣7♠ 21202× the bet
21010♠9♥ 199♦8♦ 1700× the bet
110Q♥4♦ 14Q♠A♣ 21 blackjack252.5945× 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
b345ee80ebaa12c2b2cbd1f1c858bd711a0452cedda51124c4bc76a852c11ace
Seed
9d1602bbcfd3e4cb0d2520d3e5814a1312df803a633667f5ef2e64bba190bf3f SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
2740e885a759876e5f36dc466d999528
Commitment
Batch 66,098, Merkle root 5fc799501146e7369410b4ff507bf40715032c06510d81614edac7355e9d8a18. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. c8d4fe684aa8267ea95f5261b118971c34101d74e823b1e840c99982ed23b20d
  2. 4dbef2bd85b367932c9292fe1dba67d3dc7f97497b34099e42d031c32c365cf7
  3. c14d232c25ecf9b92fecdddba47c88c188a0ed7061b6dc91f3779cefc4deedb8
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.