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

Blackjack

Play moneyended

9266c8459f743c6b32bf545d0e059acf

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,320 play
Returned
2,285 play
Bettor's net
-35 play
Return
98.49%

Results by hand

Final
Hands
200
played
Pace
18.6/min
overall 20.7/min
Biggest swing
-40
Seat 1 · hand 7

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

SeatNetRateStreak
gbb-35-17.5 play/100won 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50108♠7♥J♣ 2510♠9♥ 19202× the bet
491010♣K♠ 20Q♦K♥ 20101× the bet
48105♣J♦7♠ 22K♠5♣ 15202× the bet
47104♦5♥8♣ 178♦9♦ 17101× the bet
46108♠7♠A♦2♣ 187♦3♥K♦ 20 doubled404× the bet
4510K♣K♣ 205♣7♠Q♦ 22 bust00× the bet
4410A♣4♠7♣Q♣ 22K♣9♣ 19202× the bet
4310Q♦J♠ 20K♥K♠ 20101× the bet
42108♣8♦10♠ 262♣K♠A♣2♥2♥ 17202× the bet
4110J♦Q♣ 20A♦J♠ 21 blackjack252.5945× the bet
4010K♥10♦ 202♦7♣10♦ 1900× the bet
3910Q♥Q♠ 20K♦8♣ 1800× the bet
381010♦6♠A♣ 1710♦10♠ 20202× the bet
3710K♠J♣ 20A♠3♦5♦ 1900× the bet
3610K♠J♥ 203♦8♥A♣ 12 doubled00× the bet
35107♣K♥ 177♣9♣9♦ 25 bust00× the bet
3410K♠3♣5♦ 1810♣9♥ 19202× the bet
3310J♦Q♦ 208♥7♠ 15 surrendered50.5× the bet
32107♣4♦3♦4♥ 18Q♦Q♠ 20202× the bet
311010♦9♥ 19K♣2♥8♦ 20202× the bet
30102♠8♦J♦ 204♣5♣Q♦ 1900× the bet
29105♥5♦ 10A♥10♦ 21 blackjack252.5945× the bet
28106♥8♠Q♣ 248♦9♠ 17202× the bet
2710A♣7♠ 18A♣2♠7♠ 20202× the bet
26105♠2♣Q♦ 175♥10♠ 1500× the bet
251010♥2♦ 126♠4♦3♥3♦8♦ 24 bust00× the bet
2410Q♥7♠ 173♠3♠5♠3♥3♥ 17101× the bet
23108♣5♠6♣ 196♣7♠4♣ 1700× the bet
2210Q♣A♠ 212♥J♣ 1200× the bet
21108♠2♣3♥5♦ 189♥K♣ 19202× the bet
20104♠K♥K♥ 243♦7♥Q♣ 20 doubled404× the bet
191010♣5♦10♣ 25A♠8♦ 19202× the bet
18108♥10♣ 186♠7♣10♠ 23 bust00× the bet
1710J♥9♠ 196♣8♠10♥ 24 bust00× the bet
16108♥9♠ 172♠7♥7♣2♦ 18202× the bet
15105♣Q♦K♣ 2510♠5♥ 15202× the bet
1410K♠Q♣ 207♥7♣7♦ 21202× the bet
13104♠9♦J♣ 239♦2♦10♥ 21 doubled404× the bet
12106♦K♣J♦ 266♠A♣Q♠ 17 doubled404× the bet
111010♦J♦ 2010♠4♠J♠ 24 bust00× the bet
10107♠2♦A♦ 20J♣Q♠ 20101× the bet
9107♠Q♥ 173♠7♦2♦ 12 doubled00× the bet
810Q♥2♠Q♣ 22Q♦7♥ 17202× the bet
7106♠A♥ 172♦7♣4♣ 13 doubled2♦A♦3♣ 16 doubled00× the bet
610J♠Q♦ 202♠Q♠J♦ 22 bust00× the bet
5105♦8♦4♥ 172♦6♦5♣ 1300× the bet
410J♥J♥ 20J♣6♥ 16 surrendered50.5× the bet
3103♦4♦8♠10♦ 2510♠7♠ 17202× the bet
2109♠9♣ 18Q♦6♥ 16 surrendered50.5× the bet
1103♦8♣9♣ 20A♣2♥3♣4♠ 20101× 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
5b625a048cc0b499c010cec2150680f2a6f1fbf5daf046bd094492bc2ea076f5
Seed
77c990eb5863f7be9d5997058e78caabb94ee363709c44800c9e7ef102d9da8c SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
115a7147882b06da567ca410009d0c75
Commitment
Batch 56,570, Merkle root b8bb4ceede911f9e4c2f92803dfebd32c821d8cc8c55718298c5683db7bd0726. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 88127c980beace3c127e04d9fba25066b53247f0ce4c4a10b57449c3b82c7bdc
  2. 48e43b7fc10aaac06945fd6fad5cc0c678806ab8f5ddd8dcb212ee0d2f13b5d0
  3. 5437b19f8e589544a1e089746306f69aa6432c19ad7025eaf91bc9efd991b31a
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.