Degen Protocol
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Session against the house

Blackjack

ended Play money · 0c730c9e999913ffbeafd5e1ba9328da

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,320 play
Returned
2,440 play
Bettor's net
+120 play
Return
105.17%

Results by hand

Final
Hands
200
played
Pace
18.1/min
overall 19.7/min
Biggest swing
+30
Seat 1 · hand 73

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

SeatNetRateStreak
gbb+120+60.0 play/100lost 4

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
100107♣J♠ 176♣J♠8♥ 24 bust00× the bet
99105♦7♦Q♥ 22J♥K♥ 20202× the bet
981010♦J♣ 208♦J♥ 188♠9♣ 1700× the bet
97102♦7♠6♦5♦ 20A♦6♦10♦ 1700× the bet
96109♣10♥ 199♥2♥2♠ 13 doubled00× the bet
95102♦3♣5♥10♥ 20Q♦7♦ 1700× the bet
94106♣J♠6♥ 2210♣10♣ 20202× the bet
93107♣J♠ 1710♥7♦ 17101× the bet
92106♦J♥8♣ 248♦9♦ 17202× the bet
91109♣A♣ 208♣A♥ 1900× the bet
9010A♠4♥ 159♣7♣ 16 surrendered50.5× the bet
89109♥2♦J♦ 219♣J♦ 1900× the bet
88105♠Q♦ 15A♠K♦ 21 blackjack252.5945× the bet
87105♥A♠10♣Q♥ 269♣4♣ 13202× the bet
86105♦Q♥6♥ 219♥8♦ 1700× the bet
851010♥5♣10♠ 253♥A♦5♠ 19202× the bet
84108♣6♥Q♣ 247♣5♠6♣ 18202× the bet
8310A♠8♠ 199♣A♠ 20202× the bet
8210K♣10♥ 20A♣6♥5♦4♠J♦ 26 bust00× the bet
81106♠7♠3♣K♦ 2610♥2♣ 12202× the bet
8010K♠K♣ 206♠9♣ 15 surrendered50.5× the bet
7910J♥6♠4♠ 207♦10♣ 1700× the bet
781010♠8♦ 1810♠A♦ 21 blackjack252.5945× the bet
77109♣7♠2♣ 182♠3♥6♣7♠ 18101× the bet
7610K♥5♣ 155♥8♣3♦6♣ 22 bust00× the bet
7510A♠3♠K♣9♥ 23J♠7♦ 17202× the bet
74102♣5♥K♥ 174♥4♠A♦ 19202× the bet
73104♦9♦10♣ 236♣K♣ 166♣4♠5♣ 15 doubled606× the bet
72109♥10♣ 19Q♠A♦ 21 blackjack252.5945× the bet
71105♦10♦K♠ 254♣J♥ 14202× the bet
7010Q♦7♥ 179♠2♠J♠ 21 doubled404× the bet
6910A♠6♦ 1710♣6♥ 16 surrendered50.5× the bet
68106♥2♦ 8K♣A♥ 21 blackjack252.5945× the bet
67106♠9♠5♥ 206♥3♥A♠ 20 doubled202× the bet
6610J♣A♠ 21A♣A♣ 1200× the bet
65106♠4♦3♣2♦4♦ 198♥K♦ 188♥7♦ 1500× the bet
64103♠A♦2♣2♣ 18K♣7♥ 1700× the bet
63103♠7♠2♦A♦Q♣ 233♦J♣ 13202× the bet
62107♥6♣5♦ 18K♣J♠ 20202× the bet
61109♠3♣ 129♦6♦J♥ 25 bust00× the bet
60102♠9♣2♠8♥ 218♣6♥ 1400× the bet
5910J♠7♣ 179♠K♣ 19202× the bet
5810Q♣K♣ 204♣K♠5♠ 1900× the bet
57108♦8♦2♥ 18K♥8♠ 18101× the bet
5610J♣K♣ 20K♣4♠4♦ 1800× the bet
55105♣6♥6♥ 177♦10♠ 17101× the bet
5410J♠8♦ 182♠5♦8♥7♦ 22 bust00× the bet
53105♦9♣8♦ 223♦7♣Q♠ 20 doubled404× the bet
52106♣6♥10♠ 228♦J♣ 18202× the bet
5110Q♠8♥ 189♠10♣ 19202× 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
e9f027c2bf7b134f3392b1bffa09266258743dc72176be1b36bf5312ae557a49
Seed
5dcc33866f85d389e580c8cb6e08ad84adb1693b89be432e84fea8a98965effd SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
828da0eae5ea89190d7d5883cce9a6c3
Commitment
Batch 65,273, Merkle root 868af9546e077be34d3734d576b39b56159d7b7124d9d87a0f83c4d2a2983ff4. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. c810ae0f7287fad417eb28f886879b835e99caa85c92ad9e795b248359bf6e06
  2. 1612b3c44dabc0761c3b2db0b10939d324c6b6c2a128d87363f2ca1d051b2930
  3. 4a92e1a410b4a7f0529f1734e0a837d2bc18480c894f0315dba30e4b62c0bd29
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.