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

Blackjack

Play moneyended

e35e1f3c22e9749f4f38cb15610a4ab3

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,350 play
Returned
2,685 play
Bettor's net
+335 play
Return
114.26%

Results by hand

Final
Hands
200
played
Pace
17.0/min
overall 18.1/min
Biggest swing
-50
Seat 1 · hand 131

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

SeatNetRateStreak
gbb+335+167.5 play/100won 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50108♣A♥ 199♣4♥3♣Q♥ 26 bust00× the bet
4910Q♣5♠6♦ 214♣3♠7♣A♣6♠ 21101× the bet
48103♠4♠4♥7♠ 189♦3♦3♠ 1500× the bet
4710A♣10♥ 21K♣K♣ 2000× the bet
461010♥6♥Q♦ 266♦3♦9♥ 18202× the bet
451010♦6♥ 16J♣6♠ 16 surrendered50.5× the bet
441010♣K♥ 206♠10♦ 16 surrendered50.5× the bet
43108♠9♥ 17Q♠7♣ 17101× the bet
42107♥10♠ 17A♠5♣7♦K♣ 23 bust00× the bet
41106♣10♥8♠ 24A♥6♥K♣ 17 doubled404× the bet
4010Q♦K♠ 205♦K♦ 15 surrendered50.5× the bet
3910K♦5♠7♣ 224♦9♣7♠ 20202× the bet
3810J♣J♠ 20J♣A♦ 21 blackjack252.5945× the bet
3710J♣6♣Q♠ 26A♠8♣ 19202× the bet
361010♥8♦ 18J♣8♥ 18101× the bet
3510A♦9♥ 20J♥K♥ 20101× the bet
34104♣6♣3♠9♦ 229♦6♥ 15202× the bet
33108♥6♥ 14Q♥A♥ 21 blackjack252.5945× the bet
32103♦A♣K♥Q♥ 24K♦3♣ 13202× the bet
3110K♣A♥ 219♣2♥ 1100× the bet
30104♠3♦6♥8♥ 219♣6♠ 1500× the bet
29105♦7♠6♣ 18K♥7♦ 1700× the bet
2810A♣2♠ 132♣4♥9♦K♦ 25 bust00× the bet
27103♣3♣5♣8♣ 19Q♣7♣ 1700× the bet
26107♠4♥K♥ 21A♣10♦ 21A♥5♦ 16101× the bet
251010♦3♠ 133♦10♣Q♠ 23 bust00× the bet
24109♦10♠ 19K♣A♠ 21 blackjack252.5945× the bet
2310Q♦10♥ 209♠A♥ 20101× the bet
22106♥4♦J♠ 203♦6♥7♦ 16 doubled00× the bet
211010♦7♠ 17Q♥J♠ 20202× the bet
20109♥J♣ 195♣4♣7♦K♣ 26 bust00× the bet
1910K♥6♣ 16J♦A♥ 21 blackjack252.5945× the bet
1810K♦5♠ 158♥5♠A♦8♠ 22 bust00× the bet
1710K♠A♠ 218♥2♠ 1000× the bet
16108♦7♦J♦ 259♦J♥ 19202× the bet
15107♠7♦4♥ 187♠4♣5♥ 16 doubled00× the bet
14109♣Q♠ 195♥3♦3♠8♥ 19101× the bet
13109♥10♦ 19A♠8♠ 19101× the bet
12107♠K♦ 174♠5♣A♥ 20202× the bet
11103♣7♣ 10A♣Q♦ 21 blackjack252.5945× the bet
10102♦4♠9♦8♠ 234♠3♠10♠ 17202× the bet
9107♣K♠ 17J♣7♦ 17101× the bet
81010♥8♦ 18Q♥5♦ 15 surrendered50.5× the bet
7103♣7♣3♥4♥ 172♠9♣K♦ 21 doubled404× the bet
610J♣6♦2♦ 184♠6♣9♠ 19202× the bet
5102♥Q♥2♦10♦ 249♥6♦ 15202× the bet
410Q♥9♥ 196♠Q♣ 16 surrendered50.5× the bet
3106♣3♠K♣ 193♠8♣3♦ 14 doubled00× the bet
21010♦A♦ 218♣9♥ 1700× the bet
110J♦7♠ 178♦A♠ 198♣5♣10♣ 23 bust202× 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
67139da75718a28a287df6cd84643e1515554129c5f546f017e41f4d338ab447
Seed
af357c404312adeccf8d63b2ff818206007beebf5325eb59786dd01d18943ec8 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
b50734d0282a2137897803929f50d5ac
Commitment
Batch 47,577, Merkle root 1ce09248ff1ae3adbc07bdf5e1fe77df24ac126c83c20d382510097a10248635. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 7b97cdae53008b51a24b814552e9be6feb2b26e7c0b1f49e7a83cd94d811c0e8
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.