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

Blackjack

Play moneyended

336cc13ade9d29bd9858adba36193eae

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,330 play
Returned
2,325 play
Bettor's net
-5 play
Return
99.79%

Results by hand

Final
Hands
200
played
Pace
20.2/min
overall 21.6/min
Biggest swing
+40
Seat 1 · hand 25

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

SeatNetRateStreak
gbb-5-2.5 play/100lost 4

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
5010K♥K♦ 203♣Q♣10♠ 23 bust00× the bet
4910K♦J♣ 207♣J♣ 1700× the bet
48103♦4♥ 73♥9♦Q♦ 22 bust00× the bet
47105♠2♣K♠ 176♠4♦6♠ 16 doubled00× the bet
461010♣2♠2♦7♣ 214♦9♠7♦ 2000× the bet
4510Q♣3♥K♦ 239♠10♠ 19202× the bet
44105♠2♠J♦ 172♣K♦ 1200× the bet
43107♠7♦J♦ 243♦4♣K♣ 17202× the bet
4210A♥Q♦ 21A♦7♠ 1800× the bet
41104♥Q♦A♣4♠ 19Q♠8♥ 1800× the bet
401010♦7♣ 172♦2♣6♦4♥Q♣ 24 bust00× the bet
39105♥2♣8♠9♠ 244♠7♦J♦ 21 doubled404× the bet
38104♠9♥ 13A♣K♠ 21 blackjack252.5945× the bet
37105♥8♦K♣ 23J♦6♥ 16202× the bet
3610Q♦8♣ 189♦9♣ 18101× the bet
35107♥7♣A♠3♦ 185♠5♣6♦ 16 doubled00× the bet
3410Q♣6♦K♠ 267♦3♣9♥ 19202× the bet
33102♣6♥7♣5♦ 207♣Q♣ 1700× the bet
32103♠Q♥2♠6♣ 212♠4♣2♥7♦ 1500× the bet
3110Q♠5♥A♦10♥ 26K♣7♠ 17202× the bet
30107♣9♥3♠ 197♦K♦ 177♠A♦ 1800× the bet
2910Q♥J♠ 20J♦8♦ 1800× the bet
2810Q♣2♠8♦ 20K♣7♥ 1700× the bet
27103♣7♦2♣2♣10♥ 246♣5♥Q♣ 21 doubled404× the bet
2610K♣10♥ 202♦K♣6♦ 1800× the bet
25102♣5♥K♦ 178♣3♦7♥ 18 doubled8♣3♠K♦ 21 doubled808× the bet
24107♠2♠7♠A♣ 178♣K♦ 18202× the bet
23103♦6♥ 9A♥K♥ 21 blackjack252.5945× the bet
22103♣10♣10♥ 236♥7♥ 13202× the bet
21109♠3♣ 125♥10♠Q♣ 25 bust00× the bet
20108♠K♦ 18K♠K♣ 20202× the bet
19105♠8♠5♣ 18A♦4♠6♣ 21 doubled404× the bet
1810Q♣8♦ 18Q♦10♠ 20202× the bet
1710A♥A♦ 12K♦5♠A♦7♣ 23 bust00× the bet
16106♠4♣10♥ 20A♥9♣ 20101× the bet
151010♥5♥J♠ 255♠9♥3♠ 17202× the bet
1410Q♥A♠ 2110♥4♣ 1400× the bet
131010♠K♥ 208♠J♠ 1800× the bet
12104♣8♣8♠ 208♦4♦ 1200× the bet
1110A♦K♣ 216♦3♥ 900× the bet
10109♠7♣5♠ 21K♦J♣ 2000× the bet
910Q♣6♠6♥ 22K♥4♠4♥ 18202× the bet
8102♠J♥A♦Q♥ 236♣8♦ 14202× the bet
7104♦Q♦2♣Q♦ 26J♥K♣ 20202× the bet
61010♣9♥ 193♥3♥10♥J♥ 26 bust00× the bet
5108♣Q♠ 184♣K♦4♥ 18101× the bet
4105♠10♦K♣ 25J♣8♣ 18202× the bet
3105♣3♦10♠ 185♠7♦ 1200× the bet
210A♥5♦2♥ 18J♠8♣ 18101× the bet
1104♥A♣J♠J♥ 254♣Q♦ 14202× 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
ecdc6ab0bed482a3585dcdf451bc0fc39c913fd3da4210207579b9a08e6e3fc8
Seed
27cee736ca8270c1b7b687e3600f96b75ac6cb77028f4c472419b1aedd3e0e66 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
c35823d2c58b0031508864b1ae4d6b23
Commitment
Batch 51,430, Merkle root 0f367ea29135371e07e04c08d0c313fca62d639501cf31a18ca1ac7b74e9968e. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 1a49e60e5f3b849310a4c93472ee26720045444525f5054e1b21e1b608956106
  2. ce57f38ee8c96c3311e58b98a5e96c2127ff27fe3cf2ba8bd825e35e97d7d9b2
  3. e5b8b94eeabfb4357b71b4d9594c9380b955137bfdc3d54f42b36a8d2fd1e942
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.