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

Blackjack

Play moneyended

ee7ccc4108f1ed196b3fe8638c3bfa85

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,300 play
Returned
2,195 play
Bettor's net
-105 play
Return
95.43%

Results by hand

Final
Hands
200
played
Pace
20.6/min
overall 20.1/min
Biggest swing
+50
Seat 1 · hand 7

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

SeatNetRateStreak
gbb-105-52.5 play/100won 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
20010K♦7♦ 17K♥10♠ 20202× the bet
199109♥A♥ 209♠J♠ 1900× the bet
198102♥4♣4♦K♥ 202♠5♦6♣ 1300× the bet
197108♥9♥ 179♣J♣ 19202× the bet
19610K♠A♦ 213♦5♠ 800× the bet
195105♠6♠Q♦ 215♠6♥10♣ 21 doubled202× the bet
19410A♠4♠10♥2♥ 17K♥Q♥ 20202× the bet
19310K♣J♠ 204♠8♠3♣2♠ 1700× the bet
192102♦K♣9♣ 214♣6♦3♠ 13 doubled00× the bet
19110K♥7♣ 17A♥10♠ 21 blackjack252.5945× the bet
190108♣8♦J♣ 26J♥4♥7♥ 21202× the bet
189102♦6♠ 8K♠2♥10♥ 22 bust00× the bet
1881010♥8♥ 188♥K♦ 18101× the bet
187104♦9♦A♦7♦ 216♥10♥ 1600× the bet
186108♣8♥7♣ 234♠2♦2♦4♦6♠ 18202× the bet
185105♥6♥J♠ 216♠3♦A♦ 20 doubled00× the bet
184106♣8♥3♣ 174♥J♦ 1400× the bet
18310J♣K♣ 203♦7♦8♦ 1800× the bet
18210Q♠3♠ 133♠3♦7♣9♣ 22 bust00× the bet
181107♥Q♠ 173♥A♦2♥4♠ 20202× the bet
18010K♣J♥ 202♥5♥3♥7♣ 1700× the bet
17910J♠10♣ 207♦9♥ 16 surrendered50.5× the bet
17810Q♣A♥ 214♦A♣ 1500× the bet
177108♦5♦9♦ 22K♥5♣6♥ 21202× the bet
17610A♥K♣ 21A♦A♥ 1200× the bet
175105♠2♦3♥J♣ 20A♣8♦ 19A♦8♣ 1900× the bet
17410K♥3♥3♦7♠ 23Q♦10♥ 20202× the bet
17310A♣2♥J♥4♦ 176♥6♠3♠2♦ 17101× the bet
17210K♣8♥ 183♠Q♣2♣9♦ 24 bust00× the bet
17110J♣6♠5♦ 219♥K♣ 1900× the bet
17010A♥10♥ 213♣2♥ 500× the bet
16910Q♣5♣5♥ 20J♣2♣5♠ 1700× the bet
168109♣3♦6♥ 184♥A♦K♦5♥ 20202× the bet
167102♥8♥8♥ 18J♣8♣ 18101× the bet
166109♠9♥ 189♥3♥10♣ 22 bust00× the bet
165109♥K♣ 195♦K♣3♦ 1800× the bet
164107♠7♣A♣Q♣ 25Q♥K♣ 20202× the bet
163104♦Q♦K♠ 244♠7♠4♥ 15 doubled404× the bet
162108♥9♣ 17K♣9♠ 19202× the bet
161103♦Q♠7♣ 20A♠2♣K♣ 1300× the bet
160103♥2♦J♠9♦ 243♦A♥7♠ 21202× the bet
159105♣J♠5♠ 2010♥7♠ 1700× the bet
158106♠2♠9♠ 17J♦5♥ 1500× the bet
15710A♠A♦ 123♣3♥6♦3♥K♦ 25 bust00× the bet
15610Q♥9♦ 193♥J♣J♦ 23 bust00× the bet
15510Q♣K♠ 205♥J♣ 15 surrendered50.5× the bet
154107♦K♣ 17Q♣J♥ 20202× the bet
153103♦A♥6♦ 207♠3♦10♥ 20 doubled202× the bet
152102♥5♠A♦ 186♥5♣3♦ 14 doubled00× the bet
151107♦10♣ 173♦K♥J♣ 23 bust00× 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
bd21e6f829452cc9da12be801e9e92c51142200faf7fe73cf9247ea66a7ec002
Seed
c884f65e37fd9d9248fa8ee07ce7b4b68570e02d66d77449d9ee3869b6b349db SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
6aafbd15257384b444985d5ca681ad1d
Commitment
Batch 61,067, Merkle root f9b3db587c45ae504bb5c1518525754798344c93789ae29b4b3a7daed7f995d2. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. b8df8a65b383b500d2724032036fcdb4e01ef8db6aebe8201e41bbf1224f8716
  2. 687cd44216058303422408dcf7248e7ac97559d804896300d9c7fb37cca5bed5
  3. ea4d6e54913277d1fa7bc21ad4ab5c495b5f938faef035f432eb43575c823081
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.