Degen Protocol
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Session against the house

Blackjack

ended Play money · a0bdc3465dcd0b5f45b25d360e82de13

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,270 play
Returned
2,185 play
Bettor's net
-85 play
Return
96.26%

Results by hand

Final
Hands
200
played
Pace
20.0/min
overall 20.3/min
Biggest swing
+40
Seat 1 · hand 161

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

SeatNetRateStreak
gbb-85-42.5 play/100won 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
2001010♠5♥10♦ 25Q♠4♦A♣2♣ 17202× the bet
199109♠10♦ 195♣3♦K♥ 1800× the bet
198106♦J♠3♣ 198♣7♦ 1500× the bet
197102♦A♥5♦ 1810♥J♥ 20202× the bet
19610J♥Q♥ 202♠J♣6♦ 1800× the bet
195105♦5♦5♦5♦ 20Q♥10♦ 20101× the bet
194104♣7♠10♥ 21Q♣8♥ 1800× the bet
193106♦5♠3♦3♣ 17J♥3♣ 1300× the bet
192103♠K♥3♣3♥ 19J♠Q♣ 20202× the bet
19110Q♦6♣Q♦ 262♥A♠10♦4♠ 17202× the bet
190109♥3♣K♠ 224♦5♠3♠5♦ 17202× the bet
189102♥9♥8♥ 1910♠6♥ 1600× the bet
188107♥5♥ 128♦5♦9♣ 22 bust00× the bet
187108♦K♠ 186♦6♣Q♣ 22 bust00× the bet
186107♦Q♣ 17A♣2♥3♦3♦ 19202× the bet
18510A♠J♦ 213♠7♥ 1000× the bet
18410Q♣J♦ 206♣K♣ 16 surrendered50.5× the bet
183104♣K♣K♥ 246♠5♦7♥ 18 doubled404× the bet
18210A♠9♥ 202♥J♥6♥ 1800× the bet
181105♦A♥4♣ 203♦7♥10♠ 20 doubled202× the bet
180107♦10♣ 178♥2♣9♥ 19 doubled404× the bet
17910A♦9♠ 205♠8♦A♠10♥ 24 bust00× the bet
178106♠2♥ 810♣A♥ 21 blackjack252.5945× the bet
177108♣2♣4♥3♠ 175♣A♥J♣3♦ 19202× the bet
176104♥K♥Q♦ 24A♥J♦ 21A♥K♥ 21404× the bet
175103♥8♥6♥ 17A♠8♥ 19202× the bet
174103♠8♦2♦2♥7♦ 2210♦7♣ 17202× the bet
173103♠5♥Q♣ 185♠6♠8♣ 19 doubled404× the bet
1721010♥K♣ 202♣3♣K♣7♠ 22 bust00× the bet
171108♦2♠ 10Q♦A♦ 21 blackjack252.5945× the bet
170103♣8♣ 11A♦Q♠ 21 blackjack252.5945× the bet
169108♣8♠ 163♦K♣A♦2♦10♠ 26 bust00× the bet
168107♥5♠6♦ 18K♣7♥ 1700× the bet
167109♣2♥ 11J♦4♣2♦6♦ 22 bust00× the bet
166105♦6♥6♦ 17A♠4♠Q♠ 15 doubled00× the bet
165107♣2♠ 9A♣4♥7♦10♣ 22 bust00× the bet
164103♣7♠5♥10♠ 25Q♣J♠ 20202× the bet
163108♠2♠J♠ 2010♠5♥3♥ 1800× the bet
162105♣4♠8♠ 17K♠8♠ 18202× the bet
161106♦9♦7♥ 226♦4♦9♣ 19 doubled6♣3♣9♠ 18 doubled808× the bet
16010K♦K♣ 207♣6♠J♣ 23 bust00× the bet
15910A♠3♦2♦K♥4♣ 20K♥10♥ 20101× the bet
158109♥10♦ 197♠3♥6♠ 16 doubled00× the bet
157102♣Q♣ 12A♥K♦ 21 blackjack252.5945× the bet
156102♣4♥ 6A♥K♣ 21 blackjack252.5945× the bet
1551010♠5♣ 15Q♣2♥10♣ 22 bust00× the bet
15410K♠K♦ 208♦5♦A♣7♠ 21202× the bet
153102♥4♣ 6A♣K♠ 21 blackjack252.5945× the bet
152104♠4♣K♥ 187♦J♠ 1700× the bet
15110J♣5♦K♣ 257♥K♠ 17202× 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
b11fe41ab9dcaaf8647e4425a49f221d64a38dbc04247d6349be749f1de7c962
Seed
ee767850dd217269fdacf47cd2cda6cd585ad40cb73f04a5047759e516a85cea SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
c3b56765c04da4d174d7cc39d598f770
Commitment
Batch 65,304, Merkle root 85a46e1f2ec2c7fe1158c528499d9dc3985e39e14d867c6172cb9efd607c1819. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 4d24dfba583244fb3cd51fdafc1a7adee1f15d1317b1065498154c6537c757b7
  2. 6d334fb0eaeb8a58a54e8798691d1d88992a8569e5ab8d14e054ea82d262d78f
  3. dcddf841a418457b7bdbdb0374aa81977cda0ab57dbc6a8ce02155e798c390da
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.