Degen Protocol
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Session against the house

Blackjack

ended Play money · 4905098086b19da50e29510cf8c5f550

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,270 play
Returned
2,450 play
Bettor's net
+180 play
Return
107.93%

Results by hand

Final
Hands
200
played
Pace
20.7/min
overall 19.7/min
Biggest swing
-20
Seat 1 · hand 13

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

SeatNetRateStreak
gbb+180+90.0 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50104♦J♥3♣ 176♠5♠7♦ 18 doubled6♦9♦ 15404× the bet
4910Q♥J♠ 20Q♦K♥ 20101× the bet
48103♥3♦K♠A♣ 17K♠K♣ 20202× the bet
4710K♥7♠ 179♣10♦ 19202× the bet
46107♠7♣4♥ 188♠5♠8♦ 21202× the bet
4510K♠J♣ 203♣4♠7♣5♠ 1900× the bet
44105♣8♥Q♠ 235♥2♣6♦ 13202× the bet
43108♠J♣ 185♠9♥2♦5♣ 21202× the bet
42103♣6♠9♠ 18K♦K♥ 20202× the bet
4110J♦5♠7♦ 222♦8♠6♦3♣ 19202× the bet
40102♠6♥K♦ 185♥5♥K♦ 20 doubled404× the bet
39105♣10♦K♦ 259♠10♥ 19202× the bet
38104♦Q♠2♣7♥ 238♦A♥ 19202× the bet
3710A♥8♦ 192♠K♣8♣ 20202× the bet
36104♠4♥K♣ 18K♠2♠ 1200× the bet
35108♣K♥ 18J♣7♥ 1700× the bet
34103♦K♠J♥ 2310♣8♦ 18202× the bet
3310Q♥J♠ 202♣J♥K♦ 22 bust00× the bet
32104♣7♥A♠J♠ 224♣6♦8♠ 18 doubled404× the bet
31102♦Q♣3♠3♣ 186♥5♦6♠ 17 doubled00× the bet
30106♠A♠ 177♦9♣ 1600× the bet
29108♥4♠9♣ 21Q♦2♠5♥ 1700× the bet
28104♠9♣J♦ 23K♠9♣ 19202× the bet
27103♥10♦A♦J♠ 243♥2♣9♠ 143♦4♣2♦3♠6♥ 18404× the bet
26103♠2♥3♥5♣8♥ 219♥K♣ 1900× the bet
25109♣10♣ 197♦5♠3♠8♥ 23 bust00× the bet
24103♥5♥8♣Q♥ 268♣3♣7♠ 18 doubled404× the bet
2310K♥7♠ 177♣J♣ 17101× the bet
2210J♦7♣ 178♦3♥7♣ 18 doubled404× the bet
21107♣10♥ 17A♥3♥3♥6♣7♦ 20202× the bet
2010A♦A♠Q♣4♦7♠ 23J♥3♥4♠ 17202× the bet
19109♣2♠K♠ 213♣5♦9♣ 1700× the bet
18106♥8♣9♣ 238♦7♦ 15202× the bet
1710A♦6♠ 172♥7♥4♥10♣ 23 bust00× the bet
16104♥3♣7♣8♥ 227♣10♣ 17202× the bet
1510K♣9♠ 196♦6♦K♠ 22 bust00× the bet
14104♣10♣A♦5♣ 205♣A♠10♠ 16 doubled00× the bet
13103♠8♥4♥5♠ 208♣2♦6♦ 16 doubled00× the bet
12105♠7♣J♦ 228♣J♠ 18202× the bet
1110A♠Q♠ 217♣J♠ 1700× the bet
10103♣Q♣A♦3♠ 179♦10♣ 19202× the bet
9109♠5♥J♠ 243♠6♠5♦7♦ 21202× the bet
810A♣Q♦ 21A♥5♦ 1600× the bet
7109♣10♥ 194♠9♦J♥ 23 bust00× the bet
6107♦8♥5♥ 20Q♦9♣ 1900× the bet
510A♠6♥ 1710♦7♥ 17101× the bet
4109♠7♦6♠ 223♠9♥9♥ 21202× the bet
3105♠6♠A♣5♣ 1710♥J♣ 20202× the bet
210J♦7♠ 172♣3♦Q♣6♠ 21202× the bet
1106♦2♠6♥9♥ 23J♣8♠ 18202× 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
350ac29ab6be854334c0383c30326cfd5d9b11c1004318527418c8255f05dd39
Seed
21548b940fb1d8b4190df6070f487534e85a7e4c1c221b6759132fa7a22f8fef SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
b8a53ba85947b621a92a06958811852d
Commitment
Batch 65,776, Merkle root a1c0bb3b04bbe6f5b839d099ab084390f3e0de3c8c7ddc010b68d246b5839e66. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 201b788a8d87b83e91e5655f56396ac58064287cdfaf43a8adc97048e5f0503e
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.