Degen Protocol
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Session against the house

Blackjack

ended Play money · 3e5f99a7f9cc113a7c13b84254e51451

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,250 play
Returned
2,160 play
Bettor's net
-90 play
Return
96.00%

Results by hand

Final
Hands
200
played
Pace
20.7/min
overall 20.9/min
Biggest swing
+20
Seat 1 · hand 22

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

SeatNetRateStreak
gbb-90-45.0 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
200104♠7♣8♣ 1910♣6♥ 1600× the bet
199106♣J♠J♣ 26Q♠3♦ 13202× the bet
19810J♠J♣ 206♠6♠7♣ 1900× the bet
197106♠4♦6♥6♠ 227♥Q♠ 17202× the bet
19610J♠Q♦ 20Q♣4♣J♠ 24 bust00× the bet
19510K♣10♦ 20Q♣10♠ 20101× the bet
19410J♠2♠5♣ 173♦4♣10♥ 17101× the bet
193103♠J♥10♥ 233♣A♠J♥ 14202× the bet
19210K♠A♣ 218♥10♠ 1800× the bet
191107♦5♠A♦3♣3♦ 192♥A♥5♣ 1800× the bet
190104♠5♣K♠ 197♠2♥10♣ 19 doubled202× the bet
18910A♣6♠ 17Q♠9♦ 19202× the bet
18810J♣8♠ 187♦K♥ 1700× the bet
18710A♥7♦ 187♦J♥ 1700× the bet
18610Q♦J♥ 203♦2♣9♠4♠ 1800× the bet
185108♠7♣J♦ 257♦2♠K♣ 19202× the bet
18410Q♠6♠ 16Q♥A♣ 21 blackjack252.5945× the bet
183105♥3♦J♥ 184♣6♣K♦ 20 doubled404× the bet
182105♣5♥2♠2♣A♦6♦ 2110♠Q♠ 2000× the bet
181103♣5♠3♠10♣ 213♣6♦5♦ 14 doubled00× the bet
180109♦10♠ 198♥10♠ 1800× the bet
179105♣9♠4♥ 186♠10♣ 1600× the bet
17810K♦2♠ 12K♠2♥J♥ 22 bust00× the bet
177105♣5♦A♣ 217♥9♠ 1600× the bet
1761010♣K♠ 208♣K♦ 1800× the bet
1751010♣7♠ 173♣7♥K♥ 20202× the bet
174103♠9♥10♦ 228♣7♣ 15202× the bet
17310K♠4♣9♠ 232♥4♦J♣5♦ 21202× the bet
172102♣7♦A♣ 20K♦5♠ 1500× the bet
17110A♠3♥10♥3♠ 176♠2♠10♦ 18202× the bet
170108♣5♠K♠ 23K♣Q♦ 20202× the bet
16910Q♥9♠ 196♣K♥ 16 surrendered50.5× the bet
168103♦5♠7♠8♣ 233♥A♦7♣ 21202× the bet
167107♠5♥ 1210♦6♥K♣ 26 bust00× the bet
166109♠K♣ 19A♣6♠Q♥ 1700× the bet
165103♦8♠10♥ 216♠10♠ 1600× the bet
164107♥K♠ 17Q♦10♣ 20202× the bet
163106♣10♣5♣ 216♥8♣ 1400× the bet
16210A♥9♥ 20K♣J♦ 20101× the bet
16110J♠K♥ 205♠K♦ 15 surrendered50.5× the bet
160106♣7♦Q♣ 23J♦4♠ 14202× the bet
159103♥8♣4♠K♠ 256♦A♦2♥ 19 doubled404× the bet
158108♠J♣ 18J♥4♥10♥ 24 bust00× the bet
157109♣2♥8♠ 1910♠8♣ 1800× the bet
156104♦9♣Q♣ 236♥J♦ 16202× the bet
155107♥6♣J♣ 23J♥9♣ 19202× the bet
15410K♣K♠ 208♣7♠ 15 surrendered50.5× the bet
153107♥Q♣ 17Q♦6♥K♣ 26 bust00× the bet
152105♦5♠6♥2♠ 184♣7♥A♦ 12 doubled00× the bet
15110K♣Q♥ 2010♠4♣K♠ 24 bust00× 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
b52ab11af1367357347da191536faae36f477cd78df61a66c9be073cf3c32d0c
Seed
aa96f713d8aeba5a0a60ecff80a14ed48b9cf70a4bf1a028f7b56d257fdbd887 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
13beb7cd8424dc826f2e04683df77cf5
Commitment
Batch 69,106, Merkle root 8dd872ed1b7146e364fec6f2c17aac5c0e05939bed771838a6ab22eeb2d569d4. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 8cb5fbfa55a7431c0be4189df718411c4dd60e394f4247fed4c405f106a3175c
  2. 29d66cb36b623ef25ab465ce0dab760fdbf33b9cdaf4271fe71cd9e8fd3439a8
  3. 9dd73a04d32f093ee98bb6b75a08f48de9ea24829e505ad64a69ac0197df4c99
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.