Degen Protocol
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Session against the house

Blackjack

ended Play money · c2b32cc67e5a4923f51af7a5bb981c7c

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,150 play
Returned
1,870 play
Bettor's net
-280 play
Return
86.98%

Results by hand

Final
Hands
200
played
Pace
20.7/min
overall 21.4/min
Biggest swing
+20
Seat 1 · hand 27

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

SeatNetRateStreak
gbb-280-140.0 play/100lost 6

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50106♣8♦4♠ 186♦8♦ 1400× the bet
4910Q♦K♦ 203♦K♠K♠ 23 bust00× the bet
4810J♥4♦ 144♦Q♥Q♣ 24 bust00× the bet
4710J♥9♥ 195♠7♦K♥ 22 bust00× the bet
46106♣3♠A♦ 207♣8♠ 1500× the bet
45102♥4♣2♣2♠A♣ 21Q♣4♠ 1400× the bet
44104♦J♠J♠ 24K♥K♣ 20202× the bet
43105♦7♦4♥J♦ 265♣2♦2♣6♠ 15202× the bet
42109♣A♥ 205♠A♠10♥A♠ 1700× the bet
4110Q♣3♣8♦ 212♥6♦K♣ 1800× the bet
40102♦8♣5♥4♣ 1910♥J♠ 20202× the bet
3910A♦7♣ 18J♠6♥ 16 surrendered50.5× the bet
381010♥8♥ 18Q♣7♦ 1700× the bet
37109♠9♦ 18J♦3♣K♣ 23 bust00× the bet
36105♣2♦J♠ 17Q♣6♥ 1600× the bet
3510J♥8♥ 18Q♦3♣10♥ 23 bust00× the bet
34105♠6♠4♦4♥ 193♠7♥J♠ 20 doubled404× the bet
33106♦9♠A♣8♠ 245♠J♥ 15202× the bet
32109♠7♦J♣ 26K♥10♣ 20202× the bet
31103♣5♥6♣K♠ 244♣7♠3♥ 14 doubled404× the bet
30106♦8♣9♥ 23Q♥K♦ 20202× the bet
29109♣8♥ 1710♠4♦8♦ 22 bust00× the bet
2810K♠A♠ 213♥7♣ 1000× the bet
27107♠5♥J♦ 227♣4♣K♦ 21 doubled404× the bet
26108♠K♥ 18Q♦3♣7♠ 20202× the bet
2510J♠J♥ 209♣5♦3♣ 1700× the bet
2410J♦6♥ 16K♣A♠ 21 blackjack252.5945× the bet
23103♦5♦10♦ 18J♣K♠ 20202× the bet
221010♣7♦ 178♦10♠ 18202× the bet
21109♣A♥ 20J♠Q♠ 20101× the bet
2010A♥8♣ 193♣K♦9♦ 22 bust00× the bet
19109♥2♥ 114♠K♠Q♦ 24 bust00× the bet
18102♠Q♣10♠ 229♠4♥ 13202× the bet
17103♥K♣J♦ 2310♠8♠ 18202× the bet
161010♥3♣ 13A♣J♣ 21 blackjack252.5945× the bet
1510A♠8♥ 198♣K♠ 1800× the bet
1410Q♠K♣ 206♦7♣9♣ 22 bust00× the bet
13107♣10♣ 17A♦5♥10♥9♣ 25 bust00× the bet
12108♥6♥ 14K♣5♣J♥ 25 bust00× the bet
111010♣10♣ 208♥Q♣ 1800× the bet
101010♠5♣ 15J♥A♥ 21 blackjack252.5945× the bet
910Q♠A♥ 215♦8♥ 1300× the bet
8107♠2♣J♣ 196♣2♠10♣ 1800× the bet
710A♦8♣ 193♣J♦8♣ 21202× the bet
6104♠Q♦4♣ 187♣K♥ 1700× the bet
5102♣4♠2♠3♦5♠10♣ 266♣K♥ 16202× the bet
410A♥10♦ 218♠4♠ 1200× the bet
3109♥A♥ 20A♥6♣Q♣ 1700× the bet
2108♠3♦A♣A♣7♥ 202♦2♦3♦3♥Q♥ 20101× the bet
110A♠K♥ 21K♣2♣ 1200× 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
da346f411a9db7b452824d44db1bd7a43a3846ae43483f2db9380f5e7c4bc4d2
Seed
1cb5f00ca48c532d4307746a28e7561abdde4a9cc5a88d10861be862449f4427 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
08e823658116962cdbcb4dcf726dd441
Commitment
Batch 67,791, Merkle root 04a0c9b7f653a6a3f5e6e367a7d7bb5cb54758ca5092a299e46493a5a0c68bb4. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 85766ec38a5fa455c46eb631996a4be6fce847beba18d56d28388081424d14e4
  2. 84e7e8423461664c4ab645d6e4af043f64f2fb90ab3e8a242ba566db4a9f4d5f
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.