Degen Protocol
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Session against the house

Blackjack

ended Play money · 3a883b78a3b5cef79ca7b099c23059f8

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,380 play
Returned
2,350 play
Bettor's net
-30 play
Return
98.74%

Results by hand

Final
Hands
200
played
Pace
20.1/min
overall 20.3/min
Biggest swing
-20
Seat 1 · hand 21

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

SeatNetRateStreak
gbb-30-15.0 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
200103♥8♥9♦ 204♦A♦A♣9♠ 1500× the bet
199107♥10♥ 17A♣3♠6♦ 20202× the bet
198104♦6♠5♠4♦ 19A♠4♦5♥ 20202× the bet
197105♠3♣ 810♥A♠ 21 blackjack252.5945× the bet
196104♣8♠2♠A♥5♣ 205♣3♠5♥ 1300× the bet
19510J♠5♥7♦ 223♦A♣J♣7♦ 21202× the bet
19410Q♦9♦ 199♠A♥ 20202× the bet
193103♥7♦5♣3♠ 1810♣7♣ 1700× the bet
192102♥Q♥J♣ 225♥2♣4♥3♥ 14202× the bet
191109♣Q♠ 199♥10♥ 199♥2♠3♦ 14 doubled101× the bet
190107♠8♠5♦ 20K♠Q♠ 20101× the bet
18910A♠10♦ 2110♦9♣ 1900× the bet
188102♣J♣2♠J♣ 249♥6♠ 15202× the bet
187103♥9♣A♦3♣2♠ 187♥J♠ 1700× the bet
18610J♣5♦8♥ 2310♦J♥ 20202× the bet
185103♥3♣3♣7♦5♣ 215♣3♥8♠ 1600× the bet
184107♥5♥ 126♦2♥4♦J♦ 22 bust00× the bet
183103♥9♦8♠ 20A♥6♥9♣ 16 doubled00× the bet
182108♥5♦Q♥ 234♠5♦2♠J♦ 21202× the bet
181107♠2♥9♠ 189♠A♠ 20202× the bet
180105♦J♥10♥ 254♣Q♦ 14202× the bet
179109♠J♦ 197♦4♥3♠ 14 doubled00× the bet
178103♦A♥J♠8♥ 229♣Q♦ 19202× the bet
1771010♥6♠ 165♥8♥3♠8♠ 24 bust00× the bet
176106♠9♠A♠5♥ 2110♣K♦ 2000× the bet
175106♣Q♣K♣ 263♠8♦5♦ 16 doubled404× the bet
1741010♥J♥ 209♦5♥10♦ 24 bust00× the bet
173106♣A♥ 179♠A♣ 20202× the bet
1721010♣4♠J♠ 24K♠10♦ 20202× the bet
171106♥2♣3♠4♠8♠ 2310♠10♦ 20202× the bet
170102♣Q♦J♥ 226♠K♦ 16202× the bet
16910A♣3♥ 142♣8♣2♦J♠ 22 bust00× the bet
16810A♠6♥ 176♣K♣ 16 surrendered50.5× the bet
167105♠7♦9♥ 217♥6♠ 1300× the bet
166104♠3♥4♣5♦2♦ 182♣7♣A♣ 20 doubled404× the bet
165109♥6♥ 15A♥10♠ 21 blackjack252.5945× the bet
1641010♦7♠ 17Q♥8♣ 18202× the bet
163107♣2♥ 92♠A♠10♣K♥ 23 bust00× the bet
162102♣Q♥3♥A♠10♥ 26A♣9♦ 20A♥4♣ 15404× the bet
16110A♣K♦ 21J♦5♠ 1500× the bet
160105♣4♠J♠ 195♦6♦10♦ 21 doubled404× the bet
159106♣A♦ 1710♥3♥ 1300× the bet
158107♥2♣ 9Q♣6♣7♣ 23 bust00× the bet
15710A♣7♦ 189♦9♣ 18101× the bet
156107♣5♥ 122♥Q♣K♦ 22 bust00× the bet
155104♥Q♦6♥ 207♠5♠ 1200× the bet
15410Q♦K♦ 204♥K♥2♠3♦ 1900× the bet
1531010♥2♠8♠ 202♣9♠10♥ 21 doubled404× the bet
152103♠5♣J♥ 188♣J♣ 18101× the bet
1511010♠2♦ 128♦7♦ 15 surrendered50.5× 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
e01d8e0e88e62a96c199592b8e41712e22e30c84a0fea8bd6cff6256a13fe9f3
Seed
84c5fbb38be5b80146ddba95748b6bab87837a055904bc52ca78467e523edb8d SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
492afdf2ed554c57e3c22b1e079b3122
Commitment
Batch 71,414, Merkle root af9a539cf96b0a9c4ebff4917a6249057a6365565ceca9f4c6824a73a86d09d8. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 37a3fb0b10c1d02ca738a7fa356de2ca545f750d4638a201f3b063d2abba760b
  2. 9540c01c02e2b6c82ee1b301cb47110f7aa109db4308bc9a03166c751f6ddea4
  3. 61b88d8e806d0833264e49ffda426eda3a7c0613a556699e138ebf02facef410
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.