Degen Protocol
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Session against the house

Blackjack

ended Play money · 244ce4903db56e0869c4aaf8f2603f50

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,310 play
Returned
2,105 play
Bettor's net
-205 play
Return
91.13%

Results by hand

Final
Hands
200
played
Pace
16.7/min
overall 19.3/min
Biggest swing
-50
Seat 1 · hand 168

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

SeatNetRateStreak
gbb-205-102.5 play/100won 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
200103♦6♥6♥8♦ 23J♣8♠ 18202× the bet
199106♥Q♣5♥ 216♣A♣3♥ 20 doubled00× the bet
19810J♣3♦ 13K♣5♥ 15 surrendered50.5× the bet
197106♠K♠4♥ 20Q♥10♣ 20101× the bet
196102♥5♦ 7K♠2♦10♥ 22 bust00× the bet
19510A♠A♦2♠8♦6♠ 18Q♠2♣9♥ 21202× the bet
194106♦K♣A♦ 175♠6♥9♥ 20 doubled404× the bet
193104♣5♥5♠9♠ 233♠10♥ 13202× the bet
192103♠9♣9♠ 212♠3♦Q♦ 1500× the bet
19110A♥3♦5♣ 196♣7♠8♦ 21202× the bet
190109♣6♥2♣ 17J♥7♥ 17101× the bet
189106♥2♥7♦2♦ 17K♥7♣ 17101× the bet
188109♠4♦Q♥ 238♣7♠2♥ 17202× the bet
1871010♦10♥ 209♥9♠ 1800× the bet
18610A♥Q♦ 21Q♦K♦ 2000× the bet
18510K♣A♦ 217♦7♥ 1400× the bet
18410Q♦4♥ 14K♥4♣8♣ 22 bust00× the bet
18310K♠J♦ 205♦K♠ 15 surrendered50.5× the bet
182106♣10♠9♥ 254♣3♠6♠ 13202× the bet
18110A♥5♣10♦9♦ 2510♣8♦ 18202× the bet
180108♦Q♥ 182♥Q♠3♣7♣ 22 bust00× the bet
17910A♦2♦2♦2♣ 178♥J♦ 18202× the bet
178105♥10♣8♦ 234♦10♣ 14202× the bet
17710J♠10♦ 203♥A♠J♥9♠ 23 bust00× the bet
176105♦8♥7♠ 20K♠9♥ 1900× the bet
17510J♥5♥3♣ 184♠K♦5♦ 19202× the bet
17410J♦A♠ 213♥J♠ 1300× the bet
17310K♥3♠ 133♣A♥8♠2♠8♦ 22 bust00× the bet
17210Q♣8♥ 18K♣8♣ 18101× the bet
171105♠5♦7♠ 174♦Q♠ 144♣6♠3♦ 13 doubled00× the bet
17010Q♣J♦ 209♥6♦ 15 surrendered50.5× the bet
1691010♠10♣ 207♠4♦4♦ 15 doubled00× the bet
168105♦7♣6♦ 186♦9♠ 156♦K♣ 166♥5♥5♥ 16 doubled6♠Q♠ 1600× the bet
1671010♦5♣9♣ 242♦5♥A♦4♦8♠ 20202× the bet
166108♦6♦ 14A♦J♥ 21 blackjack252.5945× the bet
16510A♣8♥ 197♠7♦A♣10♦ 25 bust00× the bet
164105♠9♦J♣ 24J♥9♦ 19202× the bet
163107♠K♣ 173♠7♥10♣ 20 doubled404× the bet
16210K♥6♣6♦ 227♥Q♠ 17202× the bet
1611010♠5♠ 154♥Q♦10♠ 24 bust00× the bet
16010K♥2♣4♠K♣ 264♠3♠Q♣ 17202× the bet
159108♣J♦ 187♥5♥J♣ 22 bust00× the bet
158108♠K♥ 184♣3♥9♥A♦ 1700× the bet
1571010♠J♥ 209♥J♠ 1900× the bet
156107♦5♠J♠ 22J♦K♠ 20202× the bet
15510J♣A♥ 21K♦A♥ 21 blackjack101× the bet
154107♣10♦ 177♣10♦ 17101× the bet
153102♥9♦3♣4♣ 183♠J♥ 1300× the bet
15210J♦Q♣ 2010♣6♣ 16 surrendered50.5× the bet
1511010♠5♠2♠ 172♣8♦10♠ 20202× 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
8aa5d57e1db33ed864d1aeef55a6d30ac6fb3aa691fce4795c6e351da6463cdf
Seed
032b9bbd32e8ba5f4f36f468b39df7c3dd6e86f1e863f3e5ac288bec7edc412e SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
28eb68448c0c5d8f8f66108c44dfa35f
Commitment
Batch 67,332, Merkle root 93105673d5c647ecfde8d0c6c63733f1bf527693bcbf9b216d6795617e63af82. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 36062b3ca454ff2edbf2595ec19486072251e18715aaa283ba04c96b15207a26
  2. 3ac95c181aafa457d1735b7fa26237b8266416307990c66521ccba043ba43f43
  3. 3584bf8baaa4f8bd07f9851c64eb40514848d0fc7b72625b245af7a45ac6dc26
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.