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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
200108♣Q♠ 1810♥4♣5♣ 19202× the bet
199108♦4♣ 12Q♠6♠7♥ 23 bust00× the bet
198102♦7♣7♣Q♠ 265♣A♥4♥ 20202× the bet
197103♠A♦Q♠5♣ 197♦6♥ 1300× the bet
19610Q♦5♦3♦ 18K♥7♦ 1700× the bet
195102♥K♠ 122♠5♥5♦10♠ 22 bust00× the bet
194104♦A♣3♣ 188♦3♦J♦ 21 doubled404× the bet
19310A♥Q♣ 214♣3♥ 700× the bet
19210K♣8♣ 187♠2♦4♥K♥ 23 bust00× the bet
191102♣4♠A♥ 177♦4♦Q♥ 21 doubled7♠J♦ 177♦6♣ 13505× the bet
19010A♦10♣ 21A♥2♥ 1300× the bet
189106♥3♠A♠ 202♥4♦8♦ 1400× the bet
188104♠3♦8♣5♥ 20A♦4♦Q♥ 1500× the bet
187102♠6♥3♣2♥7♥ 20Q♦5♠ 1500× the bet
186109♦9♦ 1810♣4♠K♠ 24 bust00× the bet
18510Q♠K♥ 205♣7♣5♦ 1700× the bet
184103♦4♣3♦K♥ 2010♥3♥ 1300× the bet
183107♣J♠ 176♦3♥9♣ 18202× the bet
18210J♣3♦7♦ 208♠4♠5♠ 1700× the bet
181108♣K♣ 187♣6♠K♠ 23 bust00× the bet
180109♠8♠ 175♦6♠3♥ 14 doubled00× the bet
179105♥4♦A♣ 205♥10♥ 1500× the bet
17810J♦4♥A♣9♥ 249♥2♦Q♥ 21 doubled404× the bet
17710J♥J♣ 203♦Q♣K♦ 23 bust00× the bet
176103♣4♣3♦2♣2♣6♥ 206♥4♥Q♣ 20 doubled6♥10♠ 166♦K♠ 16202× the bet
1751010♥8♣ 184♦3♥2♠K♣ 19202× the bet
174107♦Q♣ 17A♣7♣ 18202× the bet
173105♥Q♠10♠ 256♥9♦ 15202× the bet
17210K♣3♥10♣ 234♣7♠10♥ 21 doubled404× the bet
1711010♥A♥ 215♠J♣ 1500× the bet
17010Q♦6♠2♠ 18J♠Q♦ 20202× the bet
169105♠8♥A♥5♠ 193♣2♥6♠6♣ 1700× the bet
168104♠5♥10♠ 197♦3♠6♠ 16 doubled00× the bet
167104♦9♠8♣ 215♣7♠ 1200× the bet
166108♥A♦ 19Q♦10♣ 20202× the bet
1651010♣9♣ 198♣3♠5♦ 16 doubled00× the bet
164107♥4♦10♠ 213♥2♦A♣3♥ 1900× the bet
16310K♠5♦J♠ 2510♣9♠ 19202× the bet
16210Q♥9♣ 1910♥2♣8♠ 20202× the bet
16110A♣2♠ 139♠5♣J♥ 24 bust00× the bet
16010A♣4♦3♦ 188♦A♠ 19202× the bet
159102♠8♣Q♣ 204♠Q♠ 1400× the bet
158103♣5♣K♥ 18A♦9♥ 20202× the bet
157102♠9♥6♦ 177♠2♠10♥ 19202× the bet
15610J♦Q♦ 206♣Q♣ 16 surrendered50.5× the bet
15510A♥J♦ 212♠5♣ 700× the bet
154102♠A♦Q♣J♦ 23K♦8♠ 18202× the bet
153109♦K♦ 197♦A♣A♠ 19101× the bet
152103♣9♥5♥ 177♦3♣Q♥ 20 doubled404× the bet
151104♥A♣3♣ 184♦Q♥ 1400× 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.