Degen Protocol
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Session against the house

Blackjack

ended Play money · fe469c38d0a50eb29d1e9e643f11726d

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,260 play
Returned
2,360 play
Bettor's net
+100 play
Return
104.42%

Results by hand

Final
Hands
200
played
Pace
18.7/min
overall 19.6/min
Biggest swing
+40
Seat 1 · hand 54

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

SeatNetRateStreak
gbb+100+50.0 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
150105♥J♥6♣ 217♦4♣2♦ 13 doubled7♠A♠2♥ 20 doubled00× the bet
149109♣3♥A♥7♣ 202♣8♣A♠ 21 doubled404× the bet
148104♥6♠Q♥ 207♠3♠4♦ 14 doubled00× the bet
14710Q♦2♣2♣J♦ 248♠5♠7♦ 20202× the bet
146106♠4♠K♣ 2010♣J♠ 20101× the bet
14510Q♣9♠ 19Q♠4♣8♣ 22 bust00× the bet
14410A♥6♥ 17Q♦Q♦ 20202× the bet
14310J♥6♦6♥ 227♦2♦9♠ 18202× the bet
14210J♠9♠ 19K♥5♣ 15 surrendered50.5× the bet
141105♣8♣3♠8♣ 245♦K♣ 15202× the bet
140104♦J♣Q♦ 245♦K♥ 15202× the bet
13910A♥A♣ 129♥5♥9♥ 23 bust00× the bet
138108♣K♠ 187♦10♣ 1700× the bet
13710J♣6♠9♠ 254♣3♣10♦ 17202× the bet
13610Q♥A♠ 21Q♥9♣ 1900× the bet
135106♥8♦2♦10♥ 262♣8♥A♣ 21 doubled404× the bet
134106♥6♠K♠ 223♠6♣8♦ 17 doubled404× the bet
133104♣3♣7♥8♠ 229♠3♦ 12202× the bet
13210J♣4♣ 14K♦5♥ 15 surrendered50.5× the bet
13110K♥K♦ 203♣6♠6♥J♥ 25 bust00× the bet
130104♠3♠6♦A♠2♣2♠ 185♦Q♣ 1500× the bet
12910Q♥K♣ 2010♠2♦4♠8♦ 24 bust00× the bet
12810K♣4♠ 143♣J♥2♠K♥ 25 bust00× the bet
127109♥A♠ 20Q♠8♦ 1800× the bet
126106♦4♦8♠ 182♥6♣A♣ 19202× the bet
125104♦9♣8♠ 21A♦2♥6♣ 1900× the bet
12410A♣9♦ 208♦A♦ 1900× the bet
123108♦9♦ 1710♦5♠K♣ 25 bust00× the bet
122103♠7♣ 10J♣A♠ 21 blackjack252.5945× the bet
12110K♠8♥ 188♥10♣ 18101× the bet
1201010♣8♣ 18J♣6♣ 16 surrendered50.5× the bet
119109♦A♥ 209♦4♣J♥ 23 bust00× the bet
118106♥3♠ 910♦A♦ 21 blackjack252.5945× the bet
117103♦10♦J♠ 2310♣J♦ 20202× the bet
116108♥J♠ 18A♦J♠ 21 blackjack252.5945× the bet
11510Q♦A♣ 21J♥10♣ 2000× the bet
114109♦10♦ 19Q♣7♣ 1700× the bet
11310K♠Q♥ 209♦5♦A♦10♣ 25 bust00× the bet
112107♠A♥ 188♣4♣A♥10♥ 23 bust00× the bet
1111010♦4♠A♣4♦ 199♦A♠ 20202× the bet
11010Q♠Q♦ 202♣J♦4♦4♦ 20101× the bet
10910A♠5♥K♠8♠ 24K♥J♦ 20202× the bet
108102♠8♣7♠ 17J♦Q♣ 20202× the bet
107103♣7♣K♥ 202♦3♠2♠K♦ 1700× the bet
10610K♣8♦ 18Q♠9♥ 19202× the bet
105104♦10♦3♦ 178♥10♦ 18202× the bet
10410K♦10♣ 20J♦A♠ 21 blackjack252.5945× the bet
103108♣3♠ 11J♦4♠8♣ 22 bust00× the bet
102105♠A♦K♥7♦ 238♥4♥ 12202× the bet
1011010♥6♥K♣ 26J♣2♣3♣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
79b3f21b5e1eb79c5671b22a9a6120f7a31b78e8d328976a34f16834d9c1401e
Seed
ab05264629af3c909fd2d3242f991d61adc9d3006fc96a06703c435bd43b123b SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
cda2d91978f85e78079d7c494230c7cb
Commitment
Batch 66,554, Merkle root fdc738e5cd3a3903d344abb4d3975e49a1d1607d44215a73af18ca575c2fa170. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 2c740e2db97b8874c427abf0e8bd9c47729047f690d72d6b3e2b625f3659851b
  2. 313a69577f1ac49b30d476e4eadb5d090969ddced6d05a24a1e5e05eb22f1ca9
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.