Degen Protocol
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Session against the house

Blackjack

ended Play money · 1cb64939eab15b52da58ce7eae9d68ca

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,220 play
Returned
2,165 play
Bettor's net
-55 play
Return
97.52%

Results by hand

Final
Hands
200
played
Pace
20.8/min
overall 19.9/min
Biggest swing
+30
Seat 1 · hand 139

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

SeatNetRateStreak
gbb-55-27.5 play/100won 2

Last hands

  1. 200Seat 1+10
  2. 199Seat 1+10
  3. 198Even0
  4. 197Even0
  5. 196Even0
  6. 195Seat 1+15
  7. 194Seat 1+10
  8. 193Even0
  9. 192Seat 1+10
  10. 191Even0
  11. 190Seat 1+20
  12. 189Seat 1+15

The hands

Newest first
#BetDealerHandsPaidChecked
200103♦J♥9♦ 222♣A♠10♣ 13202× the bet
199109♥5♠Q♥ 247♠K♦ 17202× the bet
198106♣4♠J♥ 20K♦7♠ 1700× the bet
19710K♦A♣ 21Q♣3♦ 1300× the bet
196104♥10♥5♦ 19A♠2♥9♦ 1200× the bet
195107♣6♥ 13A♥Q♠ 21 blackjack252.5945× the bet
194106♠5♠2♠2♣7♣ 223♦Q♣ 13202× the bet
193109♦3♦ 125♣J♥J♥ 25 bust00× the bet
192103♦10♦K♠ 239♣J♥ 19202× the bet
19110Q♠3♣ 135♦2♥5♦10♣ 22 bust00× the bet
1901010♦2♦Q♥ 229♥2♠Q♣ 21 doubled404× the bet
189104♠5♦ 9Q♣A♥ 21 blackjack252.5945× the bet
18810Q♣10♠ 207♦J♦ 1700× the bet
187106♣6♠A♥K♦ 23J♥2♣ 12202× the bet
186109♥10♥ 197♥A♦2♣ 20202× the bet
185109♦10♥ 19Q♦3♣5♣ 1800× the bet
18410J♥5♠6♣ 213♠4♦9♣2♠ 1800× the bet
183109♣4♠8♠ 21J♠4♥5♦ 1900× the bet
18210J♥J♠ 2010♦6♦ 16 surrendered50.5× the bet
18110A♠3♠ 142♣7♣2♥5♣8♦ 24 bust00× the bet
18010K♣4♦8♠ 22J♦J♣ 20202× the bet
179108♦4♥J♣ 223♠10♦7♥ 20202× the bet
178108♠J♦ 185♣J♠3♥ 18101× the bet
17710Q♦10♥ 205♣9♥J♣ 24 bust00× the bet
176103♥Q♣ 13A♥K♥ 21 blackjack252.5945× the bet
175102♥9♠Q♠ 21A♥2♠5♥ 1800× the bet
17410K♣5♥ 15A♠10♠ 21 blackjack252.5945× the bet
173107♠Q♠ 17A♣4♠J♠Q♥ 25 bust00× the bet
172108♣5♥ 135♣K♠A♠8♣ 24 bust00× the bet
171109♣5♣5♣ 19J♦J♥ 20202× the bet
170103♥10♠7♥ 20K♥J♦ 20101× the bet
16910A♥3♠8♣9♥ 21J♠3♥7♦ 2000× the bet
16810J♣5♠7♣ 223♠8♣J♦ 21 doubled404× the bet
167108♥10♠ 18J♣A♣ 21 blackjack252.5945× the bet
166102♠2♥Q♥A♥Q♠ 258♦2♣A♠ 21 doubled404× the bet
165105♦10♠5♥ 205♠2♣J♣ 1700× the bet
164106♦9♦A♣8♥ 24J♦3♣ 13202× the bet
163103♣8♠6♠ 17K♥7♦ 17101× the bet
16210A♦A♦ 1210♣5♣10♦ 25 bust00× the bet
161104♥4♦A♦ 1910♥K♥ 20202× the bet
16010Q♣K♠ 208♣J♦ 1800× the bet
1591010♠4♣4♣ 188♠6♠7♦ 21202× the bet
15810A♣Q♣ 21A♣9♥ 2000× the bet
15710K♥2♠ 12Q♦5♥ 15 surrendered50.5× the bet
156105♥9♣K♦ 249♦A♦ 20202× the bet
15510K♥10♦ 20J♦K♦ 20101× the bet
15410K♣K♥ 20J♠3♦Q♦ 23 bust00× the bet
153103♥J♣A♦A♥2♥ 179♦Q♥ 19202× the bet
152109♦6♠Q♣ 259♦2♥10♣ 21 doubled404× the bet
1511010♦3♥ 135♥5♠6♥9♠ 25 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
413673062db2bf1e581fe7ceb2ce1f7ecd29bd133d3e6f7f34837ec10a7ef27e
Seed
595bab14030bb3b21e52da61625c3a7cac248ae605c6bcfaae5f49f2295e9cd6 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
fe8d084ee3168590ae4e48173479ade8
Commitment
Batch 70,638, Merkle root 295ce16c5be65c01fd567e4a08be490e2f2602ac96e9a7afe1dc9f7100fd20f4. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. bf71df11732e6d38961b4f24f0cb2a3d94d2d8a11180efaf42d55d8c2e572e9a
  2. 378747171b81dbc421db48b8a4c42cb2636597c35f7b7e2ef79f1acbf64f0b8b
  3. 2f99b78806b3bc39842b3f9161569d77f168f6569bced904112f7c0aaa4fefff
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.