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

Blackjack

Play moneyended

24b74a1c52e0e8b12396781de934cd2e

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,340 play
Returned
2,105 play
Bettor's net
-235 play
Return
89.96%

Results by hand

Final
Hands
200
played
Pace
18.9/min
overall 20.6/min
Biggest swing
+30
Seat 1 · hand 90

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

SeatNetRateStreak
gbb-235-117.5 play/100won 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
150104♠4♣6♣A♦5♦ 2010♠4♦ 1400× the bet
149104♥Q♣A♠A♦10♥ 268♦J♥ 18202× the bet
148102♣4♥J♠10♣ 263♣8♠9♣ 20 doubled404× the bet
147106♥4♦9♥ 19Q♦10♠ 20202× the bet
1461010♦3♦10♦ 23Q♥K♥ 20202× the bet
145107♠Q♣ 17Q♥3♦A♣Q♣ 24 bust00× the bet
144105♥7♣6♣ 184♦10♣ 1400× the bet
143105♠2♠6♠5♠ 188♦Q♥ 188♥2♦A♥ 21 doubled505× the bet
142105♦5♣J♥ 205♦7♠ 1200× the bet
141103♥2♣2♥10♥ 179♦Q♦ 199♥3♣J♠ 22 bust202× the bet
14010J♠K♣ 20Q♣10♦ 20101× the bet
139109♠7♦ 16A♣J♣ 21 blackjack252.5945× the bet
138102♣5♥Q♠ 1710♣10♥ 20202× the bet
137106♥2♥7♣4♦ 197♠J♣ 1700× the bet
136107♦K♠ 177♥10♠ 17101× the bet
135103♠9♦4♦9♣ 254♠K♠ 14202× the bet
134105♦10♣10♠ 25J♦4♠ 14202× the bet
133107♠6♣4♦ 173♠A♣9♣7♥ 20202× the bet
132107♦7♥2♥8♥ 24J♠10♥ 20202× the bet
13110A♣2♠A♠A♣J♠9♣ 247♣3♠5♠2♥ 17202× the bet
130108♣6♠6♣ 203♦7♥Q♦ 20 doubled202× the bet
129108♦3♠K♦ 21J♦J♣ 2000× the bet
128108♦7♥ 15A♦5♦J♦9♠ 25 bust00× the bet
127102♣6♣9♦ 177♣3♦4♦ 14 doubled00× the bet
126108♣K♠ 188♥A♠ 19202× the bet
125105♠3♥J♥ 18J♣J♥ 20202× the bet
124105♥9♣8♥ 222♦8♦5♠ 15 doubled404× the bet
12310J♦4♥A♠K♥ 25J♥4♣7♠ 21202× the bet
1221010♦8♦ 185♣J♦ 15 surrendered50.5× the bet
12110A♣4♦10♠9♠ 2410♦8♣ 18202× the bet
12010K♠J♦ 20J♠J♣ 20101× the bet
11910A♥3♠7♥ 21A♥9♥ 2000× the bet
118108♣6♥K♣ 24J♠10♦ 20202× the bet
117109♦Q♠ 19J♣3♦K♠ 23 bust00× the bet
116102♥Q♥6♠ 18J♣4♥ 1400× the bet
11510K♠3♠ 13J♦A♣ 21 blackjack252.5945× the bet
11410K♠2♥8♠ 2010♦Q♣ 20101× the bet
113106♣2♣5♦8♠ 21Q♠4♠ 1400× the bet
112107♣10♣ 175♦5♣6♥ 16 doubled00× the bet
1111010♦9♦ 195♥10♠ 15 surrendered50.5× the bet
110107♦Q♣ 17Q♥3♦K♣ 23 bust00× the bet
109109♥Q♣ 193♠3♦J♠9♦ 25 bust00× the bet
10810K♥3♦6♣ 19J♥10♣ 20202× the bet
107103♣5♥8♦J♠ 262♠9♦4♠ 15 doubled404× the bet
106103♦7♥J♥ 205♦A♦Q♠ 1600× the bet
105105♦7♥7♠ 198♠K♦ 1800× the bet
104109♥9♥ 187♦5♦3♥3♦ 18101× the bet
103104♥Q♠6♣ 20J♥3♣ 1300× the bet
10210A♦8♠ 198♠7♣4♣ 19101× the bet
1011010♠4♥ 149♣5♥10♠ 24 bust00× 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
567c662f7cea581bb57236232506bb2e26cbbc3bee13e3af6b7908cef6faaec9
Seed
c1c319cd8afb23d78639a28ade9464c0f6eb92477fdff17cc6150c016c9c139d SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
07b9f5c8c69586d5f623f60fa9551faa
Commitment
Batch 48,789, Merkle root b9f35af4299f2273d1d207da0179dc7d4bef5f1fe1f258128f207505e9ad3c5f. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 43a76e47083fd0d3f977b144cdc12a999a818f0b016cccb01754bb16500840c7
  2. 4cbd7ff11d8001f78550751cff9956028b554e424c56ab84dc0943c7e9fa2bf3
  3. d7d77a33c3abbd210a3faa8669690a083b29d8ca52698c15b192ae9331243901
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.