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Degen Protocol USDC · ETHBase Sepolia · testnet
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Session against the house

Blackjack

Play moneyended

13261361f2fa189eaf98e774cb6af82f

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,290 play
Returned
2,420 play
Bettor's net
+130 play
Return
105.68%

Results by hand

Final
Hands
200
played
Pace
20.6/min
overall 19.3/min
Biggest swing
-30
Seat 1 · hand 120

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

SeatNetRateStreak
gbb+130+65.0 play/100won 2

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
10010J♠J♥ 20J♥7♣ 1700× the bet
99106♣8♠ 14A♦K♥ 21 blackjack252.5945× the bet
98105♠A♣7♥8♥ 219♠K♠ 1900× the bet
9710Q♦4♦Q♣ 244♦6♥J♣ 20202× the bet
96109♦J♥ 19K♦5♣K♥ 25 bust00× the bet
95107♠7♠ 143♣9♠Q♣ 22 bust00× the bet
94105♥K♣J♠ 252♣4♠2♣9♣ 172♣A♣10♣ 13404× the bet
93105♠3♣4♠7♦ 193♠K♥ 1300× the bet
92104♠7♦5♦10♣ 2610♣J♣ 20202× the bet
9110K♥J♦ 207♣7♣A♦A♠6♣ 22 bust00× the bet
9010J♣4♣ 146♠10♠ 16 surrendered50.5× the bet
89104♦7♦J♦ 21Q♠9♣ 1900× the bet
88107♦A♠ 18Q♥9♠ 19202× the bet
87106♣Q♥Q♦ 266♣Q♣ 16202× the bet
86102♦A♦Q♠A♠7♥ 217♦6♦ 1300× the bet
85105♠10♦5♣ 207♥A♣3♦ 21 doubled404× the bet
8410A♣4♥J♣7♣ 222♥K♣7♠ 19202× the bet
83104♥6♥10♥ 202♥4♠8♠ 1400× the bet
8210Q♥8♠ 189♥10♣ 19202× the bet
81107♠4♦10♠ 21Q♥6♣5♣ 21101× the bet
8010Q♠K♥ 20J♣K♥ 20101× the bet
79105♠4♣ 9Q♣A♠ 21 blackjack252.5945× the bet
7810Q♠4♠J♦ 243♣8♠7♥ 18 doubled404× the bet
771010♦Q♣ 205♥8♦K♥ 23 bust00× the bet
7610Q♦J♣ 207♠J♠ 1700× the bet
75108♠J♠ 18K♣J♦ 20202× the bet
74108♠K♣ 1810♥9♥ 19202× the bet
73104♥Q♥4♥ 188♣10♣ 18101× the bet
72108♣10♣ 18A♣J♠ 21 blackjack252.5945× the bet
71105♦5♥6♥2♠ 184♦A♣10♣ 15 doubled00× the bet
70107♠10♠ 173♠10♥3♣3♣ 19202× the bet
69104♣10♠6♣ 20K♦6♦ 1600× the bet
68109♥3♣Q♠ 223♦8♥5♦ 16 doubled404× the bet
67108♠Q♣ 185♥7♣K♣ 22 bust00× the bet
661010♣J♦ 207♣5♠K♠ 22 bust00× the bet
65103♣5♠K♦ 18K♦10♦ 20202× the bet
64104♥3♥6♣Q♣ 238♥6♣ 14202× the bet
63103♣7♥2♦3♦9♥ 24J♥8♣ 18202× the bet
62108♦Q♠ 189♦A♠ 20202× the bet
61106♠7♣Q♥ 232♣4♦3♦2♥5♦ 16202× the bet
6010A♠5♦9♣K♥ 255♥3♦5♣7♠ 20202× the bet
591010♦4♠A♥Q♠ 252♦3♣Q♠4♥ 19202× the bet
5810J♠6♦ 162♦4♦5♦2♠9♥ 22 bust00× the bet
5710A♠10♠ 212♥J♠ 1200× the bet
56105♦Q♥9♥ 2410♣4♣ 14202× the bet
5510J♠5♣ 153♣9♦K♣ 22 bust00× the bet
54109♥4♣ 135♥10♣8♠ 23 bust00× the bet
53103♥J♠ 13A♥10♥ 21 blackjack252.5945× the bet
52105♦A♣Q♠5♠ 21K♠Q♦ 2000× the bet
5110K♣8♣ 18A♠4♦A♣8♥K♦ 24 bust00× 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
5ff7dfc5e367583a0837e50575ead1e2e0b6bad28abafbe94dae9c5cc7565194
Seed
0750b13d0729aef8a727f2129ccd39dfc83b639f2413ae9da0d8390910da2d04 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
de71395b233cab8650f02433b2c890ec
Commitment
Batch 57,226, Merkle root f2e3368c44fe437b42625c8b2b5acd51bedb4e258ae81f257c1ade2ac835a8d7. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. e12e349c6f54bb6b77a90fcfadf10e802ef5921a502155ce52e267b97b8b1968
  2. 4dae4885cb267bfd27eafb297edf6742c7eff9ed74a34cae06be04e7bcb9e9b3
  3. 4d5ab0e5b1bd465055bb08a6e76f0d0adb863c8343653943e72827cefc39512b
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.