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Degen Protocol
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Session against the house

Blackjack

ended Play money · fa5a595adfb6c18b4700b15498dad95a

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,250 play
Returned
2,060 play
Bettor's net
-190 play
Return
91.56%

Results by hand

Final
Hands
200
played
Pace
21.8/min
overall 20.5/min
Biggest swing
-30
Seat 1 · hand 10

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

SeatNetRateStreak
gbb-190-95.0 play/100won 1

Last hands

  1. 200Seat 1+15
  2. 199Even0
  3. 198Seat 1+10
  4. 197Even0
  5. 196Seat 1+10
  6. 195Even0
  7. 194Even0
  8. 193Even0
  9. 192Even0
  10. 191Seat 1+10
  11. 190Seat 1+30
  12. 189Even0

The hands

Newest first
#BetDealerHandsPaidChecked
2001010♠K♥ 20A♦Q♠ 21 blackjack252.5945× the bet
19910A♦K♠ 214♠7♥ 1100× the bet
198109♠8♦ 175♣A♣5♠ 21202× the bet
197104♦J♣2♣4♣ 20K♥9♠ 1900× the bet
1961010♥7♣ 178♣Q♥ 18202× the bet
19510A♦K♣ 212♠8♣ 1000× the bet
194104♠5♥6♦6♣ 21K♦3♠ 1300× the bet
193107♣8♥ 153♦9♣J♣ 22 bust00× the bet
192102♥10♥7♥ 196♣A♠A♦ 1800× the bet
191104♦K♣K♠ 24Q♠10♦ 20202× the bet
190104♠5♠6♥A♠K♣ 262♦7♦K♣ 19 doubled2♥5♣K♥ 17606× the bet
189109♣5♥4♠ 185♦5♥8♣ 18 doubled202× the bet
18810Q♣6♦4♦ 205♥2♦K♣ 1700× the bet
18710Q♦3♠ 13K♦A♣ 21 blackjack252.5945× the bet
186109♦Q♥ 19Q♥A♥ 21 blackjack252.5945× the bet
1851010♠J♥ 206♦7♠K♠ 23 bust00× the bet
184108♠5♥7♣ 208♣4♦7♣ 1900× the bet
183104♥8♣2♦9♠ 238♦4♣ 12202× the bet
182103♠J♦Q♠ 239♥Q♣ 19202× the bet
18110A♣Q♥ 219♦A♦ 2000× the bet
180107♥2♠4♥A♦4♠ 189♥9♠ 18101× the bet
17910K♦2♥ 125♥A♠7♠3♥K♦ 26 bust00× the bet
178102♦J♥10♦ 225♦A♦Q♥ 16202× the bet
177105♣6♠K♠ 216♥A♦Q♠ 17 doubled00× the bet
176107♠3♣K♠ 20J♦Q♥ 20101× the bet
17510J♣9♦ 194♣9♦6♥ 19101× the bet
174106♣Q♠10♠ 26A♠5♦6♣ 12 doubled404× the bet
173102♦J♠9♦ 217♥3♥5♦ 15 doubled00× the bet
172105♠8♣5♥ 185♦4♥Q♠ 19 doubled404× the bet
17110K♥4♥ 142♦10♥A♣Q♣ 23 bust00× the bet
17010A♣9♠ 208♠6♥5♣ 1900× the bet
169103♥3♠Q♥8♣ 242♦6♦A♣ 19202× the bet
168104♠5♣A♥ 20Q♦J♥ 20101× the bet
16710K♥9♠ 199♠A♦ 20202× the bet
166102♣4♠9♣2♣ 173♣K♠ 1300× the bet
165105♣7♣4♥10♠ 266♥A♦7♣ 14 doubled404× the bet
164106♣2♦J♠ 186♠4♣2♠ 12 doubled00× the bet
163105♥3♣ 8A♦J♥ 21 blackjack252.5945× the bet
162106♦A♥ 179♠A♣ 20202× the bet
161104♠K♠A♠2♣ 174♥Q♥ 1400× the bet
160109♣6♦ 153♦K♠9♦ 22 bust00× the bet
15910J♠2♣ 12J♦5♦ 15 surrendered50.5× the bet
158103♣Q♣J♠ 235♥4♥6♦ 15 doubled404× the bet
1571010♠5♦ 155♥K♣ 15 surrendered50.5× the bet
15610K♣7♠ 17A♣2♠K♠Q♦ 23 bust00× the bet
155109♠9♦ 187♥9♦ 16 surrendered50.5× the bet
154108♦A♥ 196♣J♥8♥ 24 bust00× the bet
15310K♦7♥ 1710♥8♦ 18202× the bet
152109♠7♠4♥ 205♥A♦7♥6♥ 1900× the bet
15110K♥3♣ 13K♥5♠ 15 surrendered50.5× 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
46c9dfe7532164a5c1c842374494db9872f100d1f0d43e34b9ddec49711e51f5
Seed
ab53ea7b73a4577c6a5de60496e599849141b0c8de5c3547bfd88a209f439aa3 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
27c3551490eee2cdc0844c6fbf0e415f
Commitment
Batch 64,691, Merkle root 36f300829a9207ec7c097ad8d8fe3e6cf6718315634bfcd4eec75f25bb73d4d6. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 758352c7f92882422fccb45c873d3d86c774cfe3e8d9f5df2ed7ca140629362f
  2. 827ba4d4c1a00ee00bb78276a827d048c519e88fe1daba095b73c15c2c22ba4e
  3. 78e0d6adbe9b8695a73155b9fe54dbc5a7fd692520de79d0cf700108ca230dfd
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.