Degen Protocol
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Session against the house

Blackjack

ended Play money · ec1491cbc926071ef84146e2ecce6cc3

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,260 play
Returned
2,075 play
Bettor's net
-185 play
Return
91.81%

Results by hand

Final
Hands
200
played
Pace
19.8/min
overall 21.1/min
Biggest swing
+30
Seat 1 · hand 27

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

SeatNetRateStreak
gbb-185-92.5 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
5010Q♣3♠Q♣ 234♣4♥K♥ 18202× the bet
4910J♥Q♣ 20J♦6♦ 16 surrendered50.5× the bet
48109♣A♥ 209♠A♣ 20101× the bet
47108♦5♠ 135♣3♠5♣10♣ 23 bust00× the bet
461010♥9♣ 192♦K♠10♣ 22 bust00× the bet
45103♣3♣5♥6♠ 172♣5♥K♦ 17101× the bet
4410J♥4♣8♦ 227♥J♦ 17202× the bet
43106♥Q♦9♦ 25J♦2♠ 12202× the bet
42106♦5♠ 11A♦K♥ 21 blackjack252.5945× the bet
4110Q♥K♦ 209♠3♥J♥ 22 bust00× the bet
40102♥4♠10♦3♠ 199♣J♦ 19101× the bet
39105♦2♠5♠Q♣ 226♣Q♥ 16202× the bet
38105♣6♣A♦5♦ 17A♣3♣10♠ 14 doubled00× the bet
37105♦5♣10♠ 202♥K♦ 1200× the bet
3610Q♣J♦ 204♣Q♠3♦ 1700× the bet
3510J♠K♥ 204♣2♠10♥Q♣ 26 bust00× the bet
34104♥J♦10♦ 2410♣3♠ 13202× the bet
3310Q♣4♠5♦ 199♣K♦ 19101× the bet
32105♠9♣5♥ 19Q♥8♣ 1800× the bet
31102♦7♣8♥ 17A♦7♦ 18202× the bet
30105♠2♦4♥2♠3♦3♥ 1910♦10♣ 20202× the bet
291010♣8♦ 187♦4♠3♠ 14 doubled00× the bet
28103♠7♥Q♣ 20Q♣3♦ 1300× the bet
27106♣8♥8♥ 227♦6♠ 137♥A♥Q♦ 18 doubled606× the bet
26104♣8♠7♥ 19Q♣8♦ 1800× the bet
25106♠Q♠9♦ 252♥4♠3♣K♦ 19202× the bet
2410K♠K♠ 20Q♣10♦ 20101× the bet
2310J♠A♣ 21K♠10♦ 2000× the bet
22103♠8♥ 117♥5♠K♥ 22 bust00× the bet
21103♠4♥K♠ 17A♦2♥ 13A♠4♥ 1500× the bet
20107♣A♣ 185♦8♦6♦ 19202× the bet
19102♣4♣9♣Q♥ 258♦6♥ 14202× the bet
18105♣A♦6♠6♣ 189♥10♥ 19202× the bet
1710J♣7♣ 176♦A♥9♣5♣ 21202× the bet
1610A♥3♠ 143♠5♥4♥K♦ 22 bust00× the bet
1510Q♠8♣ 18K♦9♣ 19202× the bet
1410J♥7♣ 177♦4♥Q♦ 21 doubled404× the bet
1310J♠A♣ 216♣6♠ 1200× the bet
1210A♥6♥ 179♥8♦ 17101× the bet
11104♦9♦3♣4♥ 208♠9♣ 1700× the bet
10106♣6♠10♥ 22A♠3♥3♦ 17 doubled404× the bet
910Q♦7♣ 178♥9♠ 17101× the bet
8105♦Q♦5♠ 206♠10♦ 1600× the bet
710K♦J♣ 2010♥K♠ 20101× the bet
6105♠6♣7♥ 182♥Q♠ 1200× the bet
510Q♣4♦6♦ 203♣8♦2♠ 13 doubled00× the bet
410A♥K♣ 216♠7♠ 1300× the bet
3109♥4♥K♠ 237♣3♠K♥ 20 doubled404× the bet
210J♣4♦Q♠ 24Q♠8♦ 18202× the bet
1104♥7♦2♥A♥2♥J♠ 26K♣10♥ 20202× 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
6b0767096d703f5439c825d4e9da8bf1d2631f51f9c28b4622536fb2c9f552f8
Seed
031e28411cbe2f83550e633b4e4481db803d160c9b10d581334a7c6db63c1e47 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
af6c9dd627447292c0bc8a70004c3fe7
Commitment
Batch 70,691, Merkle root 577fde785519b12e34cf760af50add8d53f8c0b260331bb8be950c4bb0c03263. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. a498de3f3f8e7e7a8a58d323434e0eff088457b73d5cc329223aa5803df93da8
  2. 1621feacc5e63d7f4cad6c8817a4214dc77596ac6a18ec15d3b0113877737092
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.