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

Blackjack

Play moneyended

1a0ca13bfce85f3e051f59de6edc91a0

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,290 play
Returned
2,245 play
Bettor's net
-45 play
Return
98.03%

Results by hand

Final
Hands
200
played
Pace
19.8/min
overall 20.9/min
Biggest swing
-30
Seat 1 · hand 25

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

SeatNetRateStreak
gbb-45-22.5 play/100won 2

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
5010K♦7♠ 179♠10♣ 19202× the bet
49108♠J♦ 188♣2♥10♦ 20 doubled404× the bet
48103♣6♦K♣ 195♣J♣ 1500× the bet
4710Q♦A♣ 217♥A♦ 1800× the bet
46102♣10♦Q♠ 223♥A♥J♠ 14202× the bet
451010♠Q♣ 2010♦6♠ 16 surrendered50.5× the bet
44102♦5♦9♦4♥ 204♠J♦ 1400× the bet
43104♦9♦ 13Q♣A♣ 21 blackjack252.5945× the bet
4210J♦A♣ 216♣7♣ 1300× the bet
41102♥6♣7♦J♦ 255♠3♣2♦Q♠ 20202× the bet
40103♥3♥Q♠5♥ 217♠2♠3♣ 12 doubled00× the bet
39106♥10♠10♠ 263♠Q♣ 13202× the bet
3810A♣Q♣ 2110♦2♣ 1200× the bet
37102♣7♠ 9A♥Q♠ 21 blackjack252.5945× the bet
3610J♦4♥9♠ 23K♦7♥ 17202× the bet
35105♠5♠A♦ 213♠9♦ 1200× the bet
34107♦7♥2♥8♠ 249♣7♦3♥ 19202× the bet
33109♠5♠ 1410♣4♣K♦ 24 bust00× the bet
3210A♠J♠ 21Q♦8♣ 1800× the bet
3110J♣2♠ 122♦J♠K♥ 22 bust00× the bet
30103♣2♦9♥4♠ 183♦Q♥ 1300× the bet
2910Q♠K♥ 208♣10♣ 1800× the bet
2810K♦J♦ 208♦J♠ 1800× the bet
27103♥2♣5♣7♣ 173♦A♠8♥6♣ 18202× the bet
2610J♦10♦ 208♦7♣ 15 surrendered50.5× the bet
25107♠6♦5♠ 187♠4♥2♥ 13 doubled7♥10♣ 1700× the bet
24103♦A♣9♠10♦ 23A♣9♠ 20202× the bet
23103♥5♣7♦2♥ 178♣3♠4♥ 15 doubled00× the bet
22107♣3♠6♠9♠ 252♥A♦2♠8♠3♠5♣ 21202× the bet
21104♠6♥2♣2♣5♠ 195♠2♠7♥ 1400× the bet
20105♣A♥5♦ 219♠6♣ 1500× the bet
19102♠J♠J♦ 226♠2♠5♦ 13202× the bet
18103♥K♦3♥5♠ 21K♦J♥ 2000× the bet
17103♣7♥4♠4♦ 18J♦3♥ 1300× the bet
16104♠2♣6♣A♠6♥ 193♥A♦10♣ 1400× the bet
15109♣6♠ 15J♣A♥ 21 blackjack252.5945× the bet
14106♥2♣6♦3♥ 177♣6♠ 1300× the bet
13107♣2♠10♣ 196♦J♣4♠ 20202× the bet
12104♦3♦5♠6♣ 18J♦5♣ 1500× the bet
11105♦8♥2♣K♣ 25J♣6♠ 16202× the bet
1010J♣3♥Q♠ 2310♥K♥ 20202× the bet
910A♣J♣ 218♣8♠ 1600× the bet
810J♠5♥ 155♣A♥K♦K♥ 26 bust00× the bet
7102♦Q♦K♠ 228♣6♣ 14202× the bet
6108♦10♠ 187♦10♦ 1700× the bet
5108♦5♦3♦7♠ 234♥5♠6♥3♣ 18202× the bet
4109♣8♥ 172♦5♦4♦4♠8♥ 23 bust00× the bet
3108♦2♠Q♥ 209♦4♣8♥ 21202× the bet
210A♣10♥ 21Q♠4♥ 1400× the bet
1105♠6♥8♣ 195♣Q♣ 1500× 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
324269539857e04d2066c6055b8243a5b3acef36a8bb9643a64e1e0af8f640a4
Seed
e27e45c7172b5d47368aa54c825787a5b02dc8f0ed7d0492d6c23bc2d7733600 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
49cb914a9c29ac41368634915a6ae5ea
Commitment
Batch 50,317, Merkle root 185eb073def1a68347c4b090ac7274df362f26d6a2fe7116e3e7da3a6262eeda. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 20ff630a27c1d26468560e1bbc668228af5fd49e4e0155d9133839cdec55dc54
  2. 3283ef1a39e1257912f345b671b214b113ee773cf70dcf5cf160fcfa38686acd
  3. abc60f92f36a4435ca28187f421b6af7cf3e4bcec9cc56206fda5b2acbd36cd2
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.