Degen Protocol
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Session against the house

Blackjack

ended Play money · 10c4f7c475de9a398b1fcaa10a9435f3

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,260 play
Returned
2,305 play
Bettor's net
+45 play
Return
101.99%

Results by hand

Final
Hands
200
played
Pace
21.2/min
overall 20.7/min
Biggest swing
-30
Seat 1 · hand 8

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

SeatNetRateStreak
gbb+45+22.5 play/100won 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50108♦6♣6♦ 2010♦10♣ 20101× the bet
49108♣4♠ 126♥Q♣Q♣ 26 bust00× the bet
4810K♣5♠ 152♥Q♣2♥K♣ 24 bust00× the bet
47109♠7♣J♥ 265♣4♣8♠ 17202× the bet
46104♠7♠3♠K♥ 2410♣7♣ 17202× the bet
45105♦J♦2♦ 17Q♦Q♣ 20202× the bet
44103♦6♣2♥10♣ 213♥8♦9♣ 20 doubled00× the bet
43108♥10♠ 187♦3♥J♣ 20 doubled404× the bet
4210J♣9♥ 197♠5♥Q♥ 22 bust00× the bet
41107♠10♣ 179♣K♣ 19202× the bet
40102♦Q♣ 12A♥K♠ 21 blackjack252.5945× the bet
39106♥A♦ 172♦5♣4♠5♦ 1600× the bet
3810Q♠A♠ 21Q♥Q♥ 2000× the bet
37103♠10♥K♦ 234♦3♥Q♣ 17202× the bet
3610K♦7♣ 173♦2♥4♠9♦ 18202× the bet
35109♣J♣ 19K♣6♣ 16 surrendered50.5× the bet
3410J♦Q♦ 202♦3♥J♣A♣6♥ 22 bust00× the bet
33108♦Q♦ 18A♥10♦ 21 blackjack252.5945× the bet
3210K♠7♥ 173♦5♥A♦ 19202× the bet
3110J♣5♠ 15J♦A♠ 21 blackjack252.5945× the bet
30102♦K♠A♣7♠ 209♠5♦ 1400× the bet
2910A♣3♥J♠K♥ 24A♠6♣K♠ 17202× the bet
28106♣7♥10♥ 23Q♠5♣ 15202× the bet
27109♥J♥ 193♠K♥J♦ 23 bust00× the bet
2610K♥2♥ 12K♣5♣ 15 surrendered50.5× the bet
25109♥7♣9♠ 252♦10♦A♦8♠ 21202× the bet
2410A♣J♦ 216♠5♥ 1100× the bet
23106♥7♥2♥K♥ 254♣7♣A♥ 12 doubled404× the bet
221010♣10♠ 205♣5♠5♠8♦ 23 bust00× the bet
21104♠J♥Q♠ 243♣Q♦ 13202× the bet
20109♦9♦ 185♠7♣K♥ 22 bust00× the bet
19104♥Q♠2♦6♣ 22Q♣10♠ 20202× the bet
18109♦5♥ 14K♦4♣Q♠ 24 bust00× the bet
1710J♦3♣ 13A♥2♥Q♠K♦ 23 bust00× the bet
16106♠6♣9♠ 215♣K♦ 1500× the bet
151010♥J♥ 205♦9♠8♦ 22 bust00× the bet
141010♥6♥ 169♦6♥ 15 surrendered50.5× the bet
131010♠Q♦ 206♥7♣4♥ 1700× the bet
12106♦9♥4♣ 198♦K♠ 1800× the bet
1110Q♥K♠ 20J♦6♣ 16 surrendered50.5× the bet
10102♥K♥Q♣ 228♠5♠ 13202× the bet
9105♦A♣2♦ 188♠K♦ 18101× the bet
8103♦7♣5♦6♠ 216♠2♦10♣ 186♣10♠ 166♦9♣ 1500× the bet
7105♣7♣3♣7♦ 22A♥7♦2♣ 20 doubled404× the bet
6106♠3♠J♠ 19J♣Q♥ 20202× the bet
5109♠2♦8♣ 1910♦Q♥ 20202× the bet
410K♠8♣ 189♠J♠ 19202× the bet
3102♦3♠2♣4♦3♦8♠ 22J♥9♥ 19202× the bet
2105♣A♦ 16Q♠A♣ 21 blackjack252.5945× the bet
1105♠8♠J♠ 233♠10♣ 13202× 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
8c91c7c5d5d21302684f7896a04cf31762a105601c5ca2ab482d3aa2d34ac211
Seed
ec44fd8d81f4fed3df8b8c46e46bc161cd7ec3f86b3e5086f55b02eb1e27aa7a SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
ffe1d6918c60018623fa043cc2ad1115
Commitment
Batch 65,517, Merkle root f8bb22ed85a54c0ac033ef2b8e6b68874e6d74c01d768204904e938f397a18cf. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 0de67d7310d70d9046ba40979268af36d773af8bf71dc2f78679dc8a9cea0fde
  2. 8a318f5c3be70cd328f538a346e99ee5d616ec4ce525b278f5d876bbd855c6c3
  3. 283308da0ed49f8398cffd060abcfe348f9ae0502c32ac386ee10c384ecb6151
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.