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

Blackjack

Play moneyended

f8e0517fd91f11bae2a4494acf910407

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,330 play
Returned
2,270 play
Bettor's net
-60 play
Return
97.42%

Results by hand

Final
Hands
200
played
Pace
22.2/min
overall 20.0/min
Biggest swing
+60
Seat 1 · hand 81

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

SeatNetRateStreak
gbb-60-30.0 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
150102♥Q♣7♣ 19J♥5♦ 1500× the bet
149106♠A♦ 179♥6♣ 1500× the bet
14810Q♠J♠ 207♥Q♠ 1700× the bet
147103♥3♥3♥6♥8♠ 23Q♥3♠ 13202× the bet
1461010♣Q♥ 204♣10♣A♠8♠ 23 bust00× the bet
145103♦10♠J♥ 233♦8♣A♦ 12 doubled404× the bet
144103♦K♣6♠ 19J♦J♦ 20202× the bet
143104♣7♣2♥5♠ 183♥2♦6♥A♠ 1200× the bet
142109♥5♦K♣ 246♣5♦4♣ 15 doubled404× the bet
141102♥A♥9♥Q♦ 22A♣8♦ 19202× the bet
14010J♣4♦6♠ 203♠5♠8♠4♣ 20101× the bet
139108♠9♠ 179♥4♦2♠J♥ 25 bust9♦Q♦ 19202× the bet
138103♦K♠4♥ 17J♠J♦ 20202× the bet
137105♣Q♥3♦ 18A♦5♣3♣ 19 doubled404× the bet
1361010♥7♦ 178♣5♦A♠4♦ 18202× the bet
13510K♣8♥ 18Q♥5♥ 15 surrendered50.5× the bet
134106♣Q♦A♥ 17K♣6♣ 1600× the bet
133105♣4♠K♥ 197♥3♠4♦ 14 doubled00× the bet
132109♠6♦ 159♣4♦10♥ 23 bust00× the bet
131107♥7♥2♠3♥ 1910♠4♠A♠6♣ 21202× the bet
13010J♦A♦ 212♥10♠ 1200× the bet
129103♥2♦Q♠A♠A♦ 178♦Q♦ 18202× the bet
12810J♠6♦ 163♠A♥K♣2♠Q♥ 26 bust00× the bet
12710K♣Q♦ 20A♦6♥J♠ 1700× the bet
12610Q♥4♦ 14J♦3♣K♣ 23 bust00× the bet
125106♥7♦6♠ 195♦7♦ 1200× the bet
124109♥J♥ 197♣2♦6♣9♦ 24 bust00× the bet
123109♣10♦ 196♠10♠ 16 surrendered50.5× the bet
12210J♦J♠ 204♣6♣8♣ 1800× the bet
1211010♣10♦ 203♠K♥5♦ 1800× the bet
120104♣9♠Q♥ 23K♠10♦ 20202× the bet
119107♣9♦4♠ 20Q♣5♣6♥ 21202× the bet
11810J♣8♠ 186♣10♦ 16 surrendered50.5× the bet
1171010♠8♣ 184♠J♣9♦ 23 bust00× the bet
116107♣5♣Q♦ 22K♠Q♥ 20202× the bet
115104♣Q♦3♦ 174♣3♥4♣6♠ 17101× the bet
114102♦2♣5♣9♦ 183♣4♠K♠ 173♠8♦10♠ 21 doubled404× the bet
113105♣9♥10♦ 246♠7♦ 13202× the bet
11210A♠Q♣ 21A♦6♣ 1700× the bet
111108♦8♣10♠ 262♠J♠5♠ 17202× the bet
11010K♣6♦9♠ 258♦A♠ 19202× the bet
109104♦4♦Q♠ 1810♣7♠ 1700× the bet
10810K♥A♣ 21A♠2♥ 1300× the bet
107104♣8♠4♠5♣ 216♣Q♣ 1600× the bet
106107♦5♦K♠ 228♦4♦7♥ 19202× the bet
1051010♣Q♥ 203♠8♠A♠ 12 doubled00× the bet
10410J♣5♥Q♣ 256♠3♣A♣ 20202× the bet
1031010♥9♣ 197♠A♥5♦2♦4♥ 19101× the bet
1021010♣J♣ 204♣5♠9♣ 1800× the bet
101104♣6♦J♣ 203♠J♦ 1300× 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
413a74ef82b13dc24e7989423ad77960a23c43a7e2cfdb1178ab23d7182af557
Seed
cd8fbc116e3ae1f299422b11b2742f7ffc308f5cce340186e1e131e63de38cfb SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
f56da376ab47571ca2e35aef68fa5aa9
Commitment
Batch 50,623, Merkle root 39318acb5c619dedf3738ae016efb1000ffa272359c44dec6ff775f5330a2107. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 2b27bf28a4d3807c53aee413cba7981c0bea7227c0163b7f872c121805a71023
  2. d27c317263b7176f89fc456dc7ad51fd7a238fb5ee3ed76263400686564681f3
  3. 763c4bc2de30887db73b7a61d85ffa38055ac2dfe3a2c5fa6d29206e1801940b
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.