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

Blackjack

Play moneyended

26efdb72281020ad3bcdfbb675cd6b2b

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,240 play
Returned
2,155 play
Bettor's net
-85 play
Return
96.21%

Results by hand

Final
Hands
200
played
Pace
19.0/min
overall 20.4/min
Biggest swing
+50
Seat 1 · hand 2

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

SeatNetRateStreak
gbb-85-42.5 play/100won 2

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
5010K♣3♠8♠ 217♣5♣8♦ 2000× the bet
49102♥J♠K♠ 22Q♠10♦ 20202× the bet
4810J♦4♠A♥10♥ 25K♣10♦ 20202× the bet
47105♣7♥5♥ 1710♦8♥ 18202× the bet
4610K♠3♠10♠ 239♥Q♥ 19202× the bet
45104♠8♥4♠4♠ 205♣Q♦ 1500× the bet
4410A♥7♣ 18K♠J♥ 20202× the bet
431010♣5♥7♥ 223♠9♥8♦ 20202× the bet
421010♠4♥8♦ 22K♣Q♦ 20202× the bet
41103♣J♠2♦J♣ 25J♣K♠ 20202× the bet
4010J♥4♦ 145♠10♣ 15 surrendered50.5× the bet
3910K♥4♥ 147♠9♣ 16 surrendered50.5× the bet
3810K♣2♠ 122♠K♥Q♥ 22 bust00× the bet
37107♠10♥ 17Q♥J♦ 20202× the bet
36103♦2♣Q♦Q♣ 25K♣J♥ 20202× the bet
35103♥Q♥9♦ 222♠8♥J♠ 20 doubled404× the bet
3410A♣6♠ 173♠10♦7♥ 20202× the bet
33107♥4♦3♠K♥ 248♦J♥ 18202× the bet
3210Q♠K♥ 204♠Q♦K♠ 24 bust00× the bet
3110A♠9♦ 20K♦10♥ 20101× the bet
30107♥K♦ 179♥6♠7♥ 22 bust00× the bet
29108♦7♦ 155♠7♦K♠ 22 bust00× the bet
28104♦9♥10♠ 23Q♦10♠ 20202× the bet
27102♣A♦7♠ 205♦K♣ 1500× the bet
2610K♣7♣ 178♥7♣ 15 surrendered50.5× the bet
25108♣10♦ 183♥Q♣10♥ 23 bust00× the bet
24109♥6♥A♠A♦ 17A♥3♠6♠ 20202× the bet
231010♣9♦ 1910♦7♥ 1700× the bet
2210Q♦3♠ 139♠4♦J♥ 23 bust00× the bet
2110K♥4♣5♣ 192♣5♠Q♦ 1700× the bet
20104♠J♦2♥2♦ 189♣J♠ 19202× the bet
1910A♦J♦ 218♥2♦ 1000× the bet
181010♠4♣ 145♣10♣ 15 surrendered50.5× the bet
1710A♥K♣ 214♦4♦ 800× the bet
16106♥7♣Q♣ 239♦6♥ 15202× the bet
151010♥4♠2♣J♣ 26J♦10♥ 20202× the bet
1410A♣A♦5♣ 173♦9♥A♣4♣ 17101× the bet
1310J♠8♥ 187♦9♣ 16 surrendered50.5× the bet
1210Q♠9♠ 194♦K♣6♠ 20202× the bet
11105♣9♣4♦ 18J♦J♦ 20202× the bet
10106♦2♠3♠3♣Q♥ 24A♥9♥ 20A♠4♦ 15404× the bet
910J♥J♠ 20K♣A♦ 21 blackjack252.5945× the bet
8108♣7♠3♠ 183♥4♥J♥ 1700× the bet
71010♣10♠ 206♥A♣Q♣ 1700× the bet
6104♠7♠ 11Q♦A♦ 21 blackjack252.5945× the bet
5103♣6♦K♥ 19J♦4♣ 1400× the bet
410K♣7♠ 1710♥10♠ 20202× the bet
3105♠Q♠2♠ 175♠A♣5♥ 21 doubled404× the bet
2106♦8♥Q♦ 247♠4♦8♦ 19 doubled7♥J♠ 177♣10♥ 177♥9♦ 1610010× the bet
1105♦5♦ 10A♣Q♥ 21 blackjack252.5945× 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
aed6cf02f623d97833e461300a307dacfbe6ae6cd3d038b4c03cebc8cd097887
Seed
56f7392bb527b91cd2af73983319c0864cf3482c23bfd3a746760e561604334f SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
85d0204c3436f448ed904ea5da0dff0b
Commitment
Batch 59,104, Merkle root 80430b0fff4d74c025959ff4ca28be14b0ee16eaaadc5e91a8e85bb694717303. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 5670244b1505e5b27bb7244bfab337ea2e9322a733338f2ac2afb33fc41b8ffa
  2. 34c492ad4685953161d1f789874f0e1123303069627281cf49cfa08bed0255a1
  3. 8c5203d0fa36aef6f9bc481e916bdd7b48b4acc4120e297ed4d5a101d422630a
  4. 635034bf0ff271729e13b8badd53cf3d5344a826ed6dbb908d97312afb8bb2c3
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.