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

Blackjack

Play moneyended

94aaa175259255dd791d8764d95441ae

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,220 play
Returned
2,105 play
Bettor's net
-115 play
Return
94.82%

Results by hand

Final
Hands
200
played
Pace
19.6/min
overall 20.3/min
Biggest swing
+20
Seat 1 · hand 15

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

SeatNetRateStreak
gbb-115-57.5 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
150106♠K♠3♠ 198♦A♣ 19101× the bet
149102♠3♠10♣5♥ 202♣7♣Q♦ 192♥4♦8♣ 1400× the bet
148107♣5♦J♦ 22J♠J♥ 20202× the bet
147108♠6♦9♣ 238♦7♣6♣ 21202× the bet
14610K♦8♠ 18K♥10♥ 20202× the bet
14510A♥3♠ 146♦Q♦ 16 surrendered50.5× the bet
14410J♥J♥ 209♥8♣ 1700× the bet
143103♦3♣6♣6♠ 188♦Q♣ 188♦3♠6♣ 17 doubled101× the bet
1421010♣9♠ 196♦9♥ 15 surrendered50.5× the bet
14110A♠8♠ 19A♥9♦ 20202× the bet
140108♠J♦ 188♣K♥ 18101× the bet
13910J♦Q♦ 207♠3♠9♣ 1900× the bet
138102♠A♠2♦6♦ 2110♠K♦ 2000× the bet
137106♥9♦8♥ 234♦J♠ 14202× the bet
136108♣3♠10♦ 214♥Q♠2♠3♥ 1900× the bet
135107♦10♠ 17A♦9♠ 20202× the bet
13410A♦6♠ 17Q♠7♥ 17101× the bet
1331010♥5♠Q♦ 256♣5♦8♣ 19 doubled404× the bet
13210J♠8♦ 18A♣4♣4♥ 19202× the bet
131105♥6♠7♦ 18A♠7♦J♣ 18 doubled202× the bet
1301010♣3♠ 13A♥4♣A♣6♠Q♥ 22 bust00× the bet
1291010♥Q♥ 202♠10♥8♣ 20101× the bet
128109♦7♣2♣ 184♣3♦9♥3♥ 19202× the bet
12710J♠3♦K♥ 23A♠6♥4♥ 21202× the bet
12610K♦3♦ 13A♣5♠8♦Q♥ 24 bust00× the bet
125109♣J♠ 195♣9♣4♣ 1800× the bet
124103♥7♣2♥A♣8♥ 219♦A♠ 2000× the bet
123104♠7♥A♥10♥ 22K♠K♠ 20202× the bet
12210K♣A♣ 216♠8♣ 1400× the bet
121104♥7♥7♣ 1810♦3♠ 1300× the bet
120107♦9♣ 162♦Q♠K♦ 22 bust00× the bet
1191010♥3♠Q♦ 232♥9♠A♠ 12 doubled404× the bet
11810J♥K♦ 20K♦7♠ 1700× the bet
117103♠6♥J♠ 195♥2♠Q♠ 1700× the bet
116107♦3♣2♦A♦J♦ 23J♦K♠ 20202× the bet
11510J♠2♥Q♠ 228♦10♥ 18202× the bet
11410J♣10♥ 207♦K♦ 1700× the bet
1131010♦8♣ 189♣6♠ 15 surrendered50.5× the bet
112106♠7♠J♣ 235♦5♦4♥ 14 doubled404× the bet
111105♣A♥2♦ 1810♥5♥ 1500× the bet
110105♠8♠9♠ 224♣Q♦ 14202× the bet
109104♠6♣A♥ 21A♣9♥ 2000× the bet
108106♥3♦5♠2♣5♥ 2110♠2♦ 1200× the bet
10710K♦8♠ 1810♣6♣ 16 surrendered50.5× the bet
10610J♦5♦ 154♠Q♦Q♣ 24 bust00× the bet
10510Q♠2♠ 123♠10♥J♠ 23 bust00× the bet
10410A♦J♠ 21A♦4♥ 1500× the bet
1031010♠2♠ 128♦2♣2♦3♦10♣ 25 bust00× the bet
102104♥J♠7♥ 21Q♠8♣ 1800× the bet
10110J♠5♣3♦ 18K♦9♥ 19202× 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
8f391e06a05c662ec2ecc149dcc1000dc69cb15ca1ae18fca4814e337e4b5b5b
Seed
94259923eb03c101ecd2a1dcc7ae0b0b0be9864ed9a113e1abf45ecf8b3c5b4b SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
99354948cc3f5f4550371e9411cb64ec
Commitment
Batch 50,198, Merkle root 8c2ab362bea5a0d9799ed3bf7273cd71c42faae3c3398fc13a320884f9669ab9. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. ecff7aec1c733dd4dc7d196d60f1f41f634220b3596aad50392dc6cad4ec2cf6
  2. 7c5cb8a0d25171ba334a0d375e8a510ea06bfe7f7312e4f0b326e97dcb40e4ea
  3. ffe96154364fa527ff9d4298366d4768daf8cad26ac2b2953836c7fa87890b65
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.