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

Blackjack

Play moneyended

97f8c6b12e2b971432a1e6e8b264c29b

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,190 play
Returned
2,090 play
Bettor's net
-100 play
Return
95.43%

Results by hand

Final
Hands
200
played
Pace
19.1/min
overall 19.5/min
Biggest swing
-20
Seat 1 · hand 21

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

SeatNetRateStreak
gbb-100-50.0 play/100won 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
200104♣Q♠10♣ 24Q♦5♣ 15202× the bet
199102♣6♦Q♦ 188♦5♠ 1300× the bet
19810Q♦2♦ 127♥A♣6♠8♣ 22 bust00× the bet
19710K♥6♠2♣ 186♠3♠10♣ 19202× the bet
196108♠7♦3♦ 18K♦4♦7♠ 21202× the bet
195105♣A♠A♠ 177♥2♦3♠ 12 doubled00× the bet
19410J♠K♥ 204♠K♠A♦2♣ 1700× the bet
19310K♠10♥ 205♣3♠10♦ 1800× the bet
19210A♥6♥ 17Q♥3♥J♠ 23 bust00× the bet
191104♣5♠9♦ 186♠2♥5♣ 1300× the bet
190105♦5♥4♥J♠ 2410♥7♣ 17202× the bet
189105♠8♣7♠ 209♠4♦ 1300× the bet
188105♠5♣3♦2♥7♦ 224♠J♣ 14202× the bet
187109♥7♣Q♣ 26Q♦2♠7♥ 19202× the bet
18610K♠4♠10♦ 242♥A♣A♣7♠ 21202× the bet
185105♦Q♦8♦ 238♠6♣ 14202× the bet
18410Q♣10♠ 2010♠5♣ 15 surrendered50.5× the bet
18310K♠10♠ 20A♦4♣A♠Q♦4♣ 20101× the bet
182102♥4♠4♣8♥ 187♥8♦ 1500× the bet
18110A♣7♥ 185♠J♥J♠ 25 bust00× the bet
18010J♣4♠ 144♥8♠2♠8♥ 22 bust00× the bet
17910K♣7♦ 173♦10♥K♥ 23 bust00× the bet
17810Q♣8♦ 185♣3♦Q♥ 18101× the bet
17710K♥4♣8♠ 222♠6♠10♦ 18202× the bet
17610Q♥A♦ 217♥A♦ 1800× the bet
175108♦9♠ 1710♦7♦ 17101× the bet
174104♥5♥2♣9♥ 204♥7♣A♣ 12 doubled00× the bet
1731010♠Q♦ 206♣6♠A♣8♥ 21202× the bet
172109♥A♠ 206♣6♠9♥ 21202× the bet
171108♦J♣ 1810♥10♠ 20202× the bet
170104♠J♠8♣ 229♠2♣8♣ 19 doubled404× the bet
16910J♠8♣ 186♣9♣ 15 surrendered50.5× the bet
168106♣3♣J♥ 19Q♠3♦ 1300× the bet
167105♣3♣6♦9♠ 235♣7♣ 12202× the bet
166102♦K♥2♦J♦ 245♠K♣ 15202× the bet
165107♦2♣2♣J♦ 21K♣10♥ 2000× the bet
164103♣J♣2♠5♥ 20A♣5♣8♥ 1400× the bet
16310A♣9♠ 208♣9♠ 1700× the bet
162107♥A♠ 1810♦6♥7♥ 23 bust00× the bet
161106♥9♦2♠ 17A♦5♥4♦ 20 doubled404× the bet
160102♠K♦4♦6♣ 225♣Q♥ 15202× the bet
159104♣J♥9♦ 2310♠6♦ 16202× the bet
158109♦4♥2♥J♣ 258♦A♣ 19202× the bet
15710J♥3♠ 1310♦2♠Q♠ 22 bust00× the bet
15610K♦4♥ 145♣K♣ 15 surrendered50.5× the bet
155102♦8♠2♣6♣ 18K♥10♠ 20202× the bet
15410A♥9♦ 203♠5♣3♦2♦6♦ 1900× the bet
153103♠4♦ 7A♦Q♠ 21 blackjack252.5945× the bet
152107♠9♦ 169♦5♠8♠ 22 bust00× the bet
15110K♠8♣ 185♥4♠7♦2♦ 18101× 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
282c46a31b98a273ccccdd8e187ce5860dbd662614efc75b8e7f3ff5bef2d36d
Seed
aee29b405dff05bf1c54a5fe26108c104ad4020142c0dcfc4c4b1165602e4b94 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
f1b1bb6c7248a35e5bdf9cd8b11b1661
Commitment
Batch 57,148, Merkle root 7399d445c2b9c0d955e344f615df38825944d3a89ffc3ca943d7834ce2392a6b. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 19985b51302eb890388dfef29c8d1158d67f382bfc2637d44ed46781659de6fd
  2. cb0f7b4d200c608da14b228f4e6adc30b4d706c24334b5a7e02c7b46ec69274c
  3. ddba702e2ef202c02806bc5213431f8caa354068e3e04ee279ccd41ca2d5be14
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.