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Degen Protocol
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Session against the house

Blackjack

ended Play money · 85d33172b148a4192451daf4adafa1b7

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,390 play
Returned
2,315 play
Bettor's net
-75 play
Return
96.86%

Results by hand

Final
Hands
200
played
Pace
18.5/min
overall 20.2/min
Biggest swing
-40
Seat 1 · hand 171

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

SeatNetRateStreak
gbb-75-37.5 play/100won 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
100109♥8♥ 17K♦5♥K♥ 25 bust00× the bet
99104♠10♥K♠ 249♠J♣ 19202× the bet
98107♣4♥Q♠ 219♠4♥5♦ 1800× the bet
971010♥7♦ 177♣10♥ 17101× the bet
96107♦K♣ 179♥8♠ 17101× the bet
95108♠6♠ 149♠4♠J♠ 23 bust00× the bet
94109♠K♠ 19Q♠Q♦ 20202× the bet
93106♠10♠3♠ 19K♥J♣ 20202× the bet
9210A♥4♦ 1510♣4♠Q♣ 24 bust00× the bet
9110J♠6♥9♣ 258♥9♣ 17202× the bet
90103♦J♥K♥ 23Q♠6♠ 16202× the bet
89108♣J♥ 188♣Q♥ 18101× the bet
88102♠6♣6♠9♠ 238♦3♦4♥ 15 doubled404× the bet
8710Q♥K♦ 204♠4♦6♣A♠7♥ 22 bust00× the bet
86104♥J♦7♣ 21J♦3♠ 1300× the bet
85108♠Q♥ 183♦7♦A♦ 21 doubled404× the bet
84104♦4♣Q♥ 189♦2♣6♦ 17 doubled00× the bet
83107♦K♦ 17A♠6♣5♥4♠Q♣ 26 bust00× the bet
82103♣5♦2♦3♦5♦ 183♠A♠Q♣ 143♦Q♣ 1300× the bet
81105♣K♦9♥ 243♣6♦K♠ 19 doubled404× the bet
80105♣4♥3♥K♣ 223♥6♥10♥ 19 doubled404× the bet
7910K♠K♠ 204♠A♠5♥ 20101× the bet
7810A♣5♥K♥J♠ 264♠6♥2♣8♦ 20202× the bet
7710J♦A♠ 212♥J♣ 1200× the bet
76103♥10♠8♦ 21Q♠J♦ 2000× the bet
751010♠Q♣ 202♣6♣4♣8♦ 20101× the bet
7410A♥5♥8♠10♠ 249♦A♥ 20202× the bet
7310A♦3♣A♦Q♠4♣ 198♥Q♠ 1800× the bet
72107♠10♦ 1710♣10♠ 20202× the bet
7110Q♦K♥ 20A♣2♠K♣2♥J♥ 25 bust00× the bet
70108♣4♣7♦ 193♠2♦A♦3♠ 19101× the bet
69104♦7♦A♥3♣A♠A♥ 174♦Q♠ 1400× the bet
68102♣8♦3♣7♥ 204♠10♣ 1400× the bet
67103♦9♠5♠ 1710♥10♥ 20202× the bet
66107♥Q♥ 172♥Q♥9♠ 21202× the bet
6510J♦6♠K♠ 268♥J♦ 18202× the bet
64103♠6♦Q♦ 198♦5♦ 1300× the bet
63104♦9♦Q♠ 234♠3♣6♦ 13202× the bet
6210A♥Q♥ 213♠2♠ 500× the bet
61102♠6♣10♦ 188♣2♦K♥ 20 doubled404× the bet
60102♠Q♣4♠Q♥ 268♣6♠ 14202× the bet
59106♦K♣2♦ 185♣2♥K♦ 1700× the bet
58103♥8♣9♣ 203♣5♦7♦ 1500× the bet
57102♣3♦5♠2♥9♦ 214♠8♦9♦ 21101× the bet
5610J♠8♠ 186♣5♥9♠ 20 doubled404× the bet
5510A♥9♥ 202♥4♣3♦Q♥ 1900× the bet
54105♣Q♥K♦ 252♣8♦Q♦ 20 doubled404× the bet
5310J♠Q♥ 205♠K♥ 15 surrendered50.5× the bet
5210Q♣7♦ 17J♥10♦ 20202× the bet
5110Q♥3♥8♠ 21Q♦Q♥ 2000× 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
1c98fecc5b8ed1ed5b65b28a51bf1d9394a272be58022d24c04de580ce827d4b
Seed
7119e34f8df713acec993489d83eff23074e5966fd228b05345718fb3eca3114 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
4034d5c1c437d3f408e15dd9fd33f286
Commitment
Batch 63,530, Merkle root 3a282ce5c8ba687a7380b6354036c56b5b1f5e13e7d99617be0eb368cc39c74b. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. f434b65def13fb5c8fdccf778ea201d1a0d3264bdbe09cabd0ac6185e3d6999b
  2. b5b8b6ca8f16cb1103a4bee3c8438ee0e9aa00b5f713a88c99fcda85625f863f
  3. 166a5743835e503599f50a0d7325e9a6828c08f3f0c786177b791903cb244e20
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.