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

Blackjack

Play moneyended

56296edba127b5b3a1a04abbdad4d4ea

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,190 play
Returned
2,110 play
Bettor's net
-80 play
Return
96.35%

Results by hand

Final
Hands
200
played
Pace
19.4/min
overall 20.4/min
Biggest swing
+30
Seat 1 · hand 38

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

SeatNetRateStreak
gbb-80-40.0 play/100lost 2

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
5010J♠A♠ 212♦Q♦ 1200× the bet
49109♥3♥ 126♠J♥ 16 surrendered50.5× the bet
481010♣4♠A♠7♦ 222♥9♥4♦ 15 doubled404× the bet
47106♣K♥K♦ 26A♦4♥K♦ 15 doubled404× the bet
461010♥Q♥ 20Q♠10♣ 20101× the bet
45104♥K♥Q♦ 249♣A♦ 20202× the bet
44109♦4♣ 132♠4♦Q♦9♠ 25 bust00× the bet
431010♦9♥ 192♥5♣5♥2♦5♠ 19101× the bet
4210K♦9♠ 19Q♦8♦ 1800× the bet
41109♣Q♠ 19Q♥6♣ 16 surrendered50.5× the bet
40103♦10♠A♠5♠ 199♣A♠ 20202× the bet
39106♣9♦A♠4♦ 20K♣J♣ 20101× the bet
38109♣8♥ 179♣2♦7♥ 18 doubled9♣Q♠ 19606× the bet
3710A♠2♥2♦9♦3♠ 17A♠8♥ 19202× the bet
3610J♦A♠ 215♠7♠ 1200× the bet
3510J♠8♥ 185♥10♠ 15 surrendered50.5× the bet
34106♣4♠8♠ 187♣J♣ 1700× the bet
3310A♠Q♥ 219♠2♥ 1100× the bet
32108♠4♣J♠ 226♦2♥10♥ 18202× the bet
31107♣K♥ 17K♦K♠ 20202× the bet
3010K♠6♥ 1610♣4♠Q♣ 24 bust00× the bet
2910A♦K♦ 21Q♥J♣ 2000× the bet
28107♣8♥9♣ 242♥6♠J♦ 182♣3♥9♦Q♦ 24 bust202× the bet
27105♣A♠J♦10♠ 265♠A♦3♥ 19 doubled404× the bet
2610K♦3♠4♠ 172♥8♦9♦ 19202× the bet
25109♥10♦ 197♠9♦ 16 surrendered50.5× the bet
24106♠6♦Q♣ 22K♦9♠ 19202× the bet
23106♣5♠10♦ 21Q♥Q♠ 2000× the bet
22106♥K♣9♣ 256♥4♦4♦ 14 doubled404× the bet
2110J♥2♣ 12J♦5♥ 15 surrendered50.5× the bet
20107♥9♥ 167♣5♠4♥9♣ 25 bust00× the bet
19109♥K♦ 192♠4♦K♠5♣ 21202× the bet
18109♦J♠ 193♣10♣K♦ 23 bust00× the bet
17107♠2♦9♣ 18K♠2♦8♠ 20202× the bet
161010♣2♠ 126♣3♣7♣8♣ 24 bust00× the bet
1510Q♥5♣4♠ 197♦J♣ 1700× the bet
14108♥A♦ 19Q♣9♦ 19101× the bet
13103♣Q♣ 1310♠A♦ 21 blackjack252.5945× the bet
12109♥2♦ 11K♠6♠ 16 surrendered50.5× the bet
1110K♥Q♠ 209♠3♣A♥3♣A♥ 1700× the bet
10102♦Q♣8♥ 206♠2♥9♠ 1700× the bet
9109♣4♦7♠ 20Q♠K♦ 20101× the bet
8107♥Q♣ 177♣K♦ 17101× the bet
7105♥8♣8♠ 216♦K♣ 1600× the bet
6108♦2♣Q♣ 209♣3♦5♠ 1700× the bet
510K♥4♠4♦ 1810♦K♥ 20202× the bet
4103♥9♠J♦ 223♥8♦3♠ 14 doubled404× the bet
3105♠Q♥K♠ 2510♣5♠ 15202× the bet
210K♥10♠ 208♥Q♦ 1800× the bet
1102♣8♣5♠8♥ 234♠8♦5♦ 17202× 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
af34000a97db7037984d4fe23e70fa9129c7a743ae352732e71b6f0cc3713283
Seed
2f4b7b3539ee310c4e83079f9915e9c0002a1fee51589558703c026d0ebdc0ee SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
d8da04446cc55a7c4035c235a6baedea
Commitment
Batch 53,575, Merkle root a7153631fe834c8ed53acf695cb00e4997924731b9fe265b5538d60f7aaf5b32. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 2f823e9649aef30b1faf353a62a70ea61b9dac4b7c7a25951abcd21ab45879d3
  2. 854d6fdaf03346e31a5f0c8f885e692adf0a388ae2d6ff926e3e8e40332a0e94
  3. bf5626f17672e36687bd576d81fae032e7a1e2e29464daef5d55cd158616f253
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.