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

Blackjack

Play moneyended

4b8a7faa73e0608a9e6a0af947e71916

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,320 play
Returned
2,500 play
Bettor's net
+180 play
Return
107.76%

Results by hand

Final
Hands
200
played
Pace
20.1/min
overall 20.0/min
Biggest swing
-20
Seat 1 · hand 4

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

SeatNetRateStreak
gbb+180+90.0 play/100won 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50105♠2♣5♠7♥ 192♦Q♦ 1200× the bet
4910Q♦8♦ 18A♦7♥2♥ 20202× the bet
48105♦8♥Q♦ 233♠8♦Q♥ 21 doubled404× the bet
471010♥K♥ 209♠5♥4♥ 1800× the bet
4610J♥5♦ 158♠4♣4♣Q♦ 26 bust00× the bet
45109♣5♠ 14J♥4♠A♠A♥K♣ 26 bust00× the bet
44102♥6♣7♣3♥ 182♦8♠9♦ 19 doubled404× the bet
4310A♠7♠ 188♣10♥ 18101× the bet
42103♥7♠6♣2♦ 18K♦10♣ 20202× the bet
41105♠Q♦9♥ 242♦9♥K♣ 21 doubled404× the bet
4010A♦4♥ 1510♣2♥K♥ 22 bust00× the bet
391010♦6♦ 162♥5♥8♠J♣ 25 bust00× the bet
381010♣J♦ 2010♠8♠ 1800× the bet
37104♠4♠6♠9♣ 235♣4♦K♣ 19 doubled404× the bet
3610A♠3♦A♣4♠ 199♠A♦ 20202× the bet
351010♥6♠A♣ 173♥4♦8♣2♦ 17101× the bet
34106♥Q♣5♣ 219♠J♣ 1900× the bet
33105♣8♠K♦ 232♣3♥J♠ 15202× the bet
32105♦K♠A♥8♣ 242♥4♣7♥ 13202× the bet
31104♦Q♥6♦ 20J♥7♣ 1700× the bet
30106♦J♠K♠ 262♥7♥7♠ 16 doubled404× the bet
29104♣3♠6♠7♥ 203♣8♦K♠ 21 doubled3♣9♥ 12404× the bet
28106♣7♦7♠ 20K♣Q♣ 20101× the bet
271010♣A♥ 21Q♥10♥ 2000× the bet
2610A♣2♠Q♣2♣Q♠ 258♣A♠ 19202× the bet
25109♠6♦ 155♠2♦7♠9♠ 23 bust00× the bet
24104♥7♠3♣J♣ 248♦J♦ 18202× the bet
2310A♣A♣Q♦8♠ 208♦2♣2♠3♦4♦ 1900× the bet
2210K♣K♣ 206♦Q♦ 16 surrendered50.5× the bet
21108♣K♠ 186♠J♦8♠ 24 bust00× the bet
20107♠K♥ 17K♣8♠ 18202× the bet
19107♣3♥K♠ 207♣A♣ 1800× the bet
18103♠A♣Q♣Q♦ 247♣J♠ 17202× the bet
1710J♣6♠J♥ 2610♣9♣ 19202× the bet
1610A♣J♠ 2110♥6♥ 1600× the bet
1510A♠9♦ 205♦J♠J♣ 25 bust00× the bet
14106♣9♠K♥ 258♥10♦ 18202× the bet
13102♣7♥10♣ 19Q♣9♣ 19101× the bet
12106♥2♦10♠ 186♣J♠ 1600× the bet
11103♠4♠5♦10♥ 226♥9♦ 15202× the bet
1010J♣J♠ 205♦5♠Q♠ 20101× the bet
9105♣J♥J♥ 255♠A♥8♦ 14 doubled404× the bet
8107♥2♣ 95♠7♣3♠J♣ 25 bust00× the bet
71010♥10♠ 20Q♦4♥Q♠ 24 bust00× the bet
6108♦Q♣ 182♦K♥A♠4♦ 1700× the bet
5104♣A♣K♣Q♣ 255♣K♥ 15202× the bet
4104♣5♥10♦ 196♣4♠2♦ 12 doubled00× the bet
310A♥6♠ 17A♠7♦K♠ 18202× the bet
2102♠10♣7♥ 19Q♠K♦ 20202× the bet
110J♣8♣ 182♣5♠8♠9♣ 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
0e019d4c6003118d48473096c902f0bb0a2c3832adf747a1d69dda82af71b115
Seed
d8e902bbfdab65c2f132fc50d1ac1ea322ecb091d8c0b2ca9389a41f4b57b429 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
587c4d7418f468b5c5d3b354779e76a7
Commitment
Batch 57,464, Merkle root edba172cd5511963c916ff4f290ad26492ad6f4b4abc79083778a3ab5d6f6fb6. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 23a6f8dd456acc4acf423678385840362c14fc7c5fdf14975d70bba9d2c8b187
  2. 30e97c9b2d58d261f85693497fd36bcfe0ef9c4a194471ee42bee72824aaef55
  3. 48ca8c4d889093b2c0fd6e7c6cc57a29a6bba542f76bb7b8ab50edf9af994150
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.