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

Blackjack

Play moneyended

0f8674ba72c913cd4375faa7577b0fc0

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,310 play
Returned
2,460 play
Bettor's net
+150 play
Return
106.49%

Results by hand

Final
Hands
200
played
Pace
13.4/min
overall 17.7/min
Biggest swing
+20
Seat 1 · hand 6

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

SeatNetRateStreak
gbb+150+75.0 play/100lost 3

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50108♥A♥ 198♥K♣ 1800× the bet
4910K♥10♦ 20A♠7♣6♣A♠4♦ 1900× the bet
481010♣2♠ 124♥10♥9♠ 23 bust00× the bet
47105♣6♦K♠ 21K♥Q♣ 2000× the bet
4610Q♦9♦ 197♠9♣ 16 surrendered50.5× the bet
45107♣K♠ 17J♦A♥ 21 blackjack252.5945× the bet
44103♣J♦10♦ 236♠A♦8♥ 15 doubled404× the bet
43106♣3♣ 9A♥Q♠ 21 blackjack252.5945× the bet
42109♥J♥ 193♥4♣10♠ 1700× the bet
41103♠A♠ 14Q♥A♠ 21 blackjack252.5945× the bet
401010♠K♥ 204♥A♦A♥A♥6♠2♣5♦ 20101× the bet
39104♥8♥10♥ 22Q♠3♠ 13202× the bet
3810K♠7♦ 17A♦10♠ 21 blackjack252.5945× the bet
371010♠A♦ 2110♣6♠ 1600× the bet
36105♦3♠8♣9♦ 25K♠Q♣ 20202× the bet
35109♦6♦5♦ 205♠9♣2♦3♥ 1900× the bet
3410Q♦5♦8♣ 23Q♠10♦ 20202× the bet
331010♥J♠ 208♠3♣3♠ 14 doubled00× the bet
32103♠K♥3♥8♦ 247♦2♣7♥ 16 doubled404× the bet
31106♥2♦J♥ 1810♥9♣ 19202× the bet
3010Q♥3♦K♣ 232♥2♥3♦2♣2♥7♣ 18202× the bet
29107♥4♦8♦ 195♣A♥6♦6♦ 1800× the bet
28106♥4♥J♣ 206♥Q♠ 1600× the bet
27103♠A♥J♠2♠9♦ 2510♠5♥ 15202× the bet
261010♥10♣ 204♣7♣9♦ 20 doubled202× the bet
25108♣J♣ 18K♠A♠ 21 blackjack252.5945× the bet
2410A♥9♣ 204♥3♥A♣4♣8♠ 20101× the bet
23104♠7♦5♣5♠ 215♥6♣4♠ 15 doubled00× the bet
2210A♦K♠ 213♥5♥ 800× the bet
2110A♥J♣ 21A♦Q♠ 21 blackjack101× the bet
20103♠9♥5♥ 176♣2♣2♣J♦ 206♠10♣ 16202× the bet
1910J♠J♥ 207♦A♣7♠K♣ 25 bust00× the bet
1810A♣Q♠ 21Q♥Q♦ 2000× the bet
1710A♠8♠ 197♣10♥ 1700× the bet
1610Q♣4♣2♣A♦ 177♥J♠ 17101× the bet
15106♠2♦7♣6♦ 21Q♠Q♣ 2000× the bet
1410Q♥10♦ 202♠A♥7♥ 20101× the bet
1310A♥Q♦ 214♦8♥ 1200× the bet
1210K♦2♦ 123♠9♥4♥8♥ 24 bust00× the bet
1110K♥4♦9♦ 2310♠8♣ 18202× the bet
10102♦8♥K♥ 205♠7♠9♣ 21202× the bet
910A♠9♠ 2010♠9♣ 1900× the bet
8107♥5♣Q♦ 22K♥K♦ 20202× the bet
7106♦7♣2♥J♦ 255♠5♣3♠ 13 doubled404× the bet
6107♥7♠8♠ 228♥3♥Q♦ 21 doubled404× the bet
5104♠J♥2♦5♣ 21J♣9♣ 1900× the bet
4106♠K♥4♣ 204♣8♦ 1200× the bet
31010♣K♦ 204♥A♥10♠7♣ 22 bust00× the bet
2102♥4♣6♥A♥10♦ 235♥9♣ 14202× the bet
110K♦7♣ 17K♦8♠ 18202× 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
47f1ebb725e24674670de91de1fa6c21cd170053931673274ebdd5968a2590b1
Seed
de5c2f2f5978cd939e8f9f324a05580e86769b223169d14f1373ac36fea73351 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
d1235f85746090601d718b2150248486
Commitment
Batch 47,241, Merkle root fc413e27fd92d19aee5c97dc4bd51cbeeb0d196c4fed9e8e7c1a0e80bd789f5f. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. f5c74c790e969f7c6d5c285ceb79a673773552534b798852e6ba23d5461d3671
  2. 5f9f310f8e6d6d19dffb7231f7f0b0084022e5b4da4e731a787c6ab9e14d3184
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.