Degen Protocol
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Session against the house

Blackjack

ended Play money · e0bfba7cb09448e1d37242579de669fa

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,230 play
Returned
2,045 play
Bettor's net
-185 play
Return
91.70%

Results by hand

Final
Hands
200
played
Pace
21.5/min
overall 20.4/min
Biggest swing
-30
Seat 1 · hand 25

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

SeatNetRateStreak
gbb-185-92.5 play/100lost 5

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
501010♦5♦ 1510♥6♠ 16 surrendered50.5× the bet
49105♥2♣9♠9♣ 253♠A♦5♦ 19 doubled404× the bet
48108♦9♠ 17A♥4♣ 15A♥A♥ 1200× the bet
4710Q♦7♠ 172♣2♥A♥3♣7♠4♠ 19202× the bet
4610A♦Q♣ 217♣K♣ 1700× the bet
4510K♣10♥ 203♥Q♣K♦ 23 bust00× the bet
4410Q♠J♣ 20A♦9♣ 20101× the bet
43109♦Q♦ 199♥J♦ 19101× the bet
42108♥5♥3♣7♥ 2310♠8♦ 18202× the bet
411010♦8♦ 18A♦9♦ 20202× the bet
4010Q♦8♣ 18J♥2♠Q♣ 22 bust00× the bet
39103♦5♥3♣K♣ 217♠K♥ 1700× the bet
38106♥8♣6♣ 20K♦5♦ 1500× the bet
3710K♥3♥8♦ 218♦10♣ 1800× the bet
3610Q♠2♥ 1210♥2♦10♦ 22 bust00× the bet
35109♣Q♣ 196♥9♣8♦ 23 bust00× the bet
34108♥6♦3♥ 17K♣K♥ 20202× the bet
3310Q♥9♥ 195♣A♥10♥8♦ 24 bust00× the bet
32107♥7♣2♠9♥ 2510♠9♣ 19202× the bet
311010♠6♥ 166♦K♣ 16 surrendered50.5× the bet
30107♦5♣3♥7♣ 229♠5♠6♠ 20202× the bet
2910Q♠2♦ 12J♥3♣Q♣ 23 bust00× the bet
28108♠2♦ 109♣3♣J♣ 22 bust00× the bet
2710A♦J♦ 216♣9♦ 1500× the bet
26104♠Q♣7♥ 217♦3♥Q♦ 20 doubled00× the bet
25102♥Q♠A♣8♥ 216♣Q♦ 166♥5♠7♠ 18 doubled00× the bet
24103♣Q♣7♣ 203♦6♣A♠ 20 doubled202× the bet
231010♦Q♠ 204♥K♦2♥K♥ 26 bust00× the bet
22109♣A♠ 208♦Q♠ 1800× the bet
2110A♣J♥ 21A♣8♠ 1900× the bet
20105♥2♥5♦5♠ 178♠5♥ 1300× the bet
19103♠5♦3♥A♥7♣ 195♣9♣ 1400× the bet
18103♥5♣5♥J♠ 23K♠3♥ 13202× the bet
1710J♠K♦ 20K♣Q♣ 20101× the bet
16108♥A♣ 19K♦6♥6♠ 22 bust00× the bet
15105♥Q♥8♥ 23A♦2♣10♠ 13202× the bet
14108♦2♦7♠ 172♥A♥7♣ 20202× the bet
13108♦10♠ 18Q♠5♣J♣ 25 bust00× the bet
1210A♦4♣6♠ 212♠Q♥3♥4♦ 1900× the bet
11103♦3♦8♦10♦ 24J♠6♣ 16202× the bet
10107♥2♦ 9K♦5♠K♣ 25 bust00× the bet
9108♠5♠A♦A♦A♦Q♠ 26A♠2♥8♦ 21202× the bet
8109♣9♣ 18A♥6♣3♠ 20202× the bet
71010♥7♠ 172♥3♣3♣6♦3♠ 17101× the bet
61010♦Q♣ 209♣9♠ 1800× the bet
51010♦Q♥ 20K♥2♦7♠ 1900× the bet
41010♣6♣J♠ 266♦A♣4♠ 21202× the bet
310Q♦8♠ 188♠K♥ 18101× the bet
2109♣4♦5♦ 183♦9♠5♠ 1700× the bet
110K♠9♠ 19A♣10♣ 21A♣A♦ 12202× 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
9ecbeead1fb1d109331e195d7ad0c57de0dcbe945998c3e1ffd4c3611dbb43f6
Seed
f00c99e8e16dd1898a86c0037925fac1735930e5ea5755c6ef920c8a1699f54b SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
2ea1027deb32b66cf01be56a199be201
Commitment
Batch 66,206, Merkle root 7332f6011b7d8952398d57f620b20626c2ca071f93b859fee6c8189f32828d9c. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. cb1d7b265552c60243e33f2c9fb5f82da037d06e9875d615773e95eda0a60cd1
  2. 07de5f53f99dc06dd3175ac9a3be1bcb830f5cbb1b3eaa7040dbb46ba71c33a7
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.