Degen Protocol
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Session against the house

Blackjack

ended Play money · 7dc5fd8765ad9a4c29242356475d2d0d

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,340 play
Returned
2,360 play
Bettor's net
+20 play
Return
100.85%

Results by hand

Final
Hands
200
played
Pace
21.2/min
overall 20.8/min
Biggest swing
+20
Seat 1 · hand 3

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

SeatNetRateStreak
gbb+20+10.0 play/100won 2

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
150105♣A♦K♣3♣ 197♥K♦ 1700× the bet
14910Q♦K♣ 206♣8♣J♠ 24 bust00× the bet
148106♦Q♣K♠ 26A♥6♥ 17A♦2♥ 13404× the bet
14710A♠K♦ 217♠5♦ 1200× the bet
14610Q♦K♥ 206♠7♦J♦ 23 bust00× the bet
145104♣10♦4♥ 183♣10♦ 1300× the bet
14410A♥10♦ 21Q♦J♠ 2000× the bet
14310A♠6♣ 1710♦4♣8♣ 22 bust00× the bet
1421010♦A♠ 213♣9♦ 1200× the bet
141107♣7♠ 1410♣A♣ 21 blackjack252.5945× the bet
1401010♦3♦5♣ 18K♥3♥6♣ 19202× the bet
139103♥4♠A♥ 187♥2♠4♠ 13 doubled00× the bet
1381010♣Q♦ 205♣5♦Q♥ 20101× the bet
13710Q♦6♦A♣ 1710♣10♠ 20202× the bet
13610J♦Q♣ 20Q♣3♥J♦ 23 bust00× the bet
13510A♦6♠ 174♣K♣2♦8♦ 24 bust00× the bet
134105♦A♣9♣8♥ 236♦K♦ 16202× the bet
133102♥K♦2♥5♣ 192♥6♠J♥ 1800× the bet
132102♣8♠6♥2♦ 184♦3♥10♠ 1700× the bet
1311010♦3♣ 13J♦5♠ 15 surrendered50.5× the bet
130108♦A♣ 193♣A♥6♥ 20202× the bet
12910J♥3♠10♣ 234♦5♦2♠7♦ 18202× the bet
12810Q♠3♠ 135♥10♥ 15 surrendered50.5× the bet
12710K♥8♠ 183♠6♥5♦6♥ 20202× the bet
12610K♦10♠ 204♥8♥J♣ 22 bust00× the bet
125105♣4♣Q♥ 195♠10♥ 1500× the bet
124104♥4♣8♦2♦ 184♥6♠9♦ 19 doubled404× the bet
1231010♥A♥ 2110♣9♥ 1900× the bet
12210Q♠3♦6♣ 197♠A♥J♣ 1800× the bet
12110K♦J♣ 203♠2♦Q♠3♣ 1800× the bet
120104♠J♦9♣ 23A♦6♣A♥ 18 doubled404× the bet
119104♥9♦9♣ 229♦K♣ 19202× the bet
11810A♦Q♠ 212♦9♦ 1100× the bet
117106♣K♦10♦ 266♠A♠3♣ 20 doubled404× the bet
116107♦J♥ 178♠A♣ 19202× the bet
115102♣8♠Q♥ 203♠9♠4♣ 1600× the bet
11410Q♥J♣ 20Q♣Q♣ 20101× the bet
11310Q♠10♥ 20J♣10♠ 20101× the bet
112105♠7♠ 12J♦A♠ 21 blackjack252.5945× the bet
111106♠10♥3♣ 19K♠J♣ 20202× the bet
110106♦4♠3♦2♠10♣ 25A♥Q♠ 21A♥J♠ 21404× the bet
10910K♥6♠7♦ 23Q♥10♣ 20202× the bet
10810Q♦K♥ 20K♥7♣ 1700× the bet
10710A♠3♠ 147♠7♠9♦ 23 bust00× the bet
106107♦10♦ 17K♠5♠J♠ 25 bust00× the bet
10510J♥5♥10♠ 258♠K♦ 18202× the bet
104106♣5♠K♥ 212♣Q♥ 1200× the bet
103103♠9♣2♦4♦ 185♦2♠K♠ 1700× the bet
10210K♥8♣ 187♥J♣ 1700× the bet
10110Q♠5♣K♦ 25J♦3♣2♣4♠ 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
9e152b616defe7c3552dc45413b697302c76db6fc8355d1dda4a1ddd57c5630d
Seed
1629d5c9978edcc3052aa3f9a0be40cfa17f652c43b3b587a7f4e7aac0877d49 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
554f7a2c15277c6f21793a659abde4c0
Commitment
Batch 66,639, Merkle root 223c2370b21ae22b905450876dae8c12a8fd2f5a207be0e52f613c5ae64d9a4f. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. ea2e4a8c9f76462744968dd13894ec99bb536693554ad2c8bd8868d2526296e1
  2. d3904934e0fee203d4a3a7e323dd4f28e0da0fcd0928cc70755b0cfc14df5959
  3. a8651eaf6908fd0e98c49c3a22d46bd9c941b298b9dfc8018e4be13408e19381
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.