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Degen Protocol USDC · ETHBase Sepolia · testnet
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Session against the house

Blackjack

Play moneyended

3400628fcba2bd5c093dbd587ffe73c2

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,290 play
Returned
2,430 play
Bettor's net
+140 play
Return
106.11%

Results by hand

Final
Hands
200
played
Pace
20.8/min
overall 20.2/min
Biggest swing
+50
Seat 1 · hand 145

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

SeatNetRateStreak
gbb+140+70.0 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50103♥8♦J♥ 2110♥K♦ 2000× the bet
4910J♠8♣ 18J♦A♥ 21 blackjack252.5945× the bet
481010♠3♣ 134♣J♣2♥K♦ 26 bust00× the bet
4710Q♠7♠ 177♣7♦K♠ 24 bust00× the bet
46108♠10♣ 18K♦7♦ 1700× the bet
4510K♥7♠ 173♦9♥J♠ 22 bust00× the bet
4410Q♣K♥ 20J♥10♠ 20101× the bet
43107♣7♣ 1410♦4♣9♦ 23 bust00× the bet
4210K♦K♣ 20J♦3♠A♠7♥ 21202× the bet
4110Q♠7♦ 176♠K♥ 16 surrendered50.5× the bet
40107♦5♥ 129♦6♥J♥ 25 bust00× the bet
3910A♣A♦4♣Q♦A♦ 173♠4♣10♠ 17101× the bet
381010♣3♠ 135♦J♥ 15 surrendered50.5× the bet
37105♣Q♦Q♦ 2510♥3♣ 13202× the bet
36103♥J♠9♥ 22J♥3♥ 13202× the bet
3510A♥6♠ 179♥J♣ 19202× the bet
34107♥10♣ 17Q♠J♣ 20202× the bet
3310K♦K♥ 209♦4♣5♦ 1800× the bet
32102♣2♥2♠5♥Q♣ 21J♥5♣ 1500× the bet
31107♠4♦ 11J♥6♣J♥ 26 bust00× the bet
3010J♣4♠Q♠ 24J♦J♠ 20202× the bet
29103♦3♠A♣ 17K♣10♥ 20202× the bet
28103♦5♦ 810♦A♥ 21 blackjack252.5945× the bet
27102♦2♠6♠3♥Q♣ 238♦6♠ 14202× the bet
26104♥4♠4♣3♦A♥9♣ 25A♦9♠ 20202× the bet
25109♣3♥ 12A♠2♣K♣Q♦ 23 bust00× the bet
24109♦7♣2♣ 18J♣8♥ 18101× the bet
23102♦4♣K♣8♠ 245♠8♠ 13202× the bet
22108♥K♦ 189♠4♦J♦ 23 bust00× the bet
2110Q♥5♦A♣A♥ 175♣2♥5♥8♥ 20202× the bet
20107♥6♦9♣ 228♥K♥ 18202× the bet
1910Q♠Q♠ 20J♦4♠8♠ 22 bust00× the bet
18106♥5♠J♦ 2110♠5♠ 1500× the bet
17104♥3♥Q♥ 17Q♦4♠ 1400× the bet
16103♣8♥5♣3♥ 1910♥Q♥ 20202× the bet
151010♠Q♣ 208♦6♦4♦ 1800× the bet
14106♦6♠5♦ 176♠5♣J♣ 21 doubled404× the bet
13107♦3♥7♣ 17J♦K♦ 20202× the bet
121010♥7♠ 177♣2♠7♥3♣ 19202× the bet
11102♥4♣A♦ 172♥5♣7♠ 1400× the bet
10103♠7♥7♠ 176♦7♣ 1300× the bet
910K♦J♣ 206♠10♠ 16 surrendered50.5× the bet
8105♥7♦7♠ 19A♣6♣ 17A♣5♣ 1600× the bet
71010♣10♥ 206♥8♣2♦6♥ 22 bust00× the bet
6104♣A♦A♠8♦10♦ 246♠9♥ 15202× the bet
51010♣K♠ 207♥2♦3♣Q♣ 22 bust00× the bet
4104♠2♠4♥9♥ 198♠Q♦ 1800× the bet
3105♣5♥K♣ 208♥J♦ 1800× the bet
2102♥8♥10♣ 209♣Q♦ 1900× the bet
110J♦7♦ 176♦A♣3♥ 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
b0f17e5108d3583414cfa0d27a88b1af15d3161b4b6ffa8d1fba5d98fccefd51
Seed
583c6936be5114916a0930e9567a9c4a853ace062609e49bc45d0bdc4f01df15 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
f77513fc316ba7e6252facadf13dd972
Commitment
Batch 54,705, Merkle root 05ec86737bfbde38b337d077976a47474f4eb35b4094450ca959e0727225b2d5. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 718700280035f0232b4431b39fef666a8b80c042d7b26f30ac215ace9b8a1c13
  2. 5843b8e2627444d273fcd75775d824e8e952c89fbb24bf89c1f031dc965568c2
  3. 3c816204997d5ca925ae05f05e420ea0a72327890525ded305b36a82a8c5bcf9
  4. 611440f540c368e8647c0b405af50bd4d2bab847cb1ecf568a89628418b2704e
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.