Degen Protocol
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Session against the house

Blackjack

ended Play money · 67a7b180b04a75f672db204c12e998b5

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,250 play
Returned
2,105 play
Bettor's net
-145 play
Return
93.56%

Results by hand

Final
Hands
200
played
Pace
22.3/min
overall 21.3/min
Biggest swing
+30
Seat 1 · hand 167

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

SeatNetRateStreak
gbb-145-72.5 play/100lost 1

Last hands

  1. 200Even0
  2. 199Seat 1+15
  3. 198Seat 1+10
  4. 197Seat 1+10
  5. 196Even0
  6. 195Seat 1+10
  7. 194Even0
  8. 193Even0
  9. 192Even0
  10. 191Even0
  11. 190Even0
  12. 189Seat 1+10

The hands

Newest first
#BetDealerHandsPaidChecked
200107♣8♦ 156♠8♦Q♦ 24 bust00× the bet
19910J♥2♥ 12A♦10♦ 21 blackjack252.5945× the bet
198104♦4♠5♦6♠ 19K♦K♠ 20202× the bet
19710A♠6♥ 1710♠K♣ 20202× the bet
19610A♣3♦6♦ 204♥4♣7♦3♣ 1800× the bet
19510Q♣7♠ 175♥5♥4♠6♠ 20202× the bet
19410J♦3♠8♥ 213♦9♠5♠ 1700× the bet
193104♥10♦5♠ 19A♥6♠J♣ 17 doubled00× the bet
19210Q♥Q♣ 202♠A♣J♠7♦ 20101× the bet
19110J♠K♦ 207♣K♠ 1700× the bet
190105♣10♠3♦ 182♥Q♥ 1200× the bet
18910A♠3♣4♣ 18A♠9♥ 20202× the bet
188104♣6♥4♣7♠ 217♣K♣ 1700× the bet
187108♠J♠ 188♠Q♦ 18101× the bet
1861010♠K♣ 20Q♦8♥ 1800× the bet
18510A♥J♦ 2110♦A♣ 21 blackjack101× the bet
18410J♠A♠ 21Q♥10♥ 2000× the bet
183106♦A♦ 17K♠4♦ 1400× the bet
182105♠J♦2♦ 177♥5♣ 1200× the bet
181105♠2♣K♦ 17Q♥5♦ 1500× the bet
180106♦5♥6♠ 17Q♥8♦ 18202× the bet
17910A♣6♦ 176♥10♠ 16 surrendered50.5× the bet
178103♦Q♦7♣ 2010♠5♥ 1500× the bet
177108♦2♦8♥ 1810♠10♦ 20202× the bet
176102♥10♣3♥A♥9♠ 25K♦K♥ 20202× the bet
175103♦3♥3♣8♥ 17A♠7♠Q♣ 18 doubled404× the bet
174102♥A♥3♠6♠6♣ 1810♥J♥ 20202× the bet
173107♠4♦8♥ 195♦6♥5♣ 16 doubled00× the bet
172104♥3♠2♠8♦ 173♣9♦ 1200× the bet
171106♦Q♥Q♥ 263♦7♠2♣ 12 doubled404× the bet
1701010♦K♥ 203♦6♥J♦ 1900× the bet
169105♥10♣K♥ 257♣6♣ 13202× the bet
168108♣J♦ 187♥5♦10♥ 22 bust00× the bet
167106♣2♥4♣4♠K♥ 267♣A♣Q♦ 18 doubled7♠10♦ 17606× the bet
166106♦K♠Q♣ 262♠8♠3♠ 13 doubled404× the bet
165105♣7♠10♠ 22J♣7♠ 17202× the bet
164107♣3♥3♥2♥J♠ 25Q♥10♦ 20202× the bet
1631010♥3♣8♥ 21K♣8♣ 1800× the bet
162105♦J♥4♦ 199♠J♦ 19101× the bet
161106♣K♣5♦ 216♥A♣J♥ 17 doubled00× the bet
160104♥4♣4♥K♦ 229♣2♣10♠ 21 doubled404× the bet
159107♦7♥ 144♥2♥J♣8♣ 24 bust00× the bet
158103♣7♦K♦ 207♦8♠ 1500× the bet
15710A♥10♦ 21A♣5♥ 1600× the bet
156104♣4♦9♥ 174♣8♣ 1200× the bet
155102♥7♠K♥ 198♣K♥ 1800× the bet
1541010♣K♣ 209♣4♦K♦ 23 bust00× the bet
15310J♥8♦ 188♦9♣ 1700× the bet
15210Q♦K♣ 208♥K♣ 1800× the bet
151104♣10♦4♥ 188♣10♠ 18101× 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
0f17e096f09fa205bcdbe3d3bc1f7eb1750f2a2116993f4f083623037f84abb7
Seed
f587cc657863828846f7414d645d90b39651e8cae432f5dfe537f38a23a9ce61 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
102c55b0ca16fbc226fc9e6f894102ec
Commitment
Batch 68,916, Merkle root 47ad685d9c2ed71d2a78f870dc66228455a7bce9112f323e4163258465ae31a0. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 67011c928eaddf4d45a5faa52faf352248e5a3f8d3802a94eb81ef1be9fcf23a
  2. 380272d2943e1017712f7a59ccee349b1c934f5f4f3ddf564c961fa59454e590
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.