Degen Protocol
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Session against the house

Blackjack

ended Play money · 0286ba3c634ae83d2002deab3e3cebcc

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,270 play
Returned
2,185 play
Bettor's net
-85 play
Return
96.26%

Results by hand

Final
Hands
200
played
Pace
22.6/min
overall 21.2/min
Biggest swing
+40
Seat 1 · hand 21

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

SeatNetRateStreak
gbb-85-42.5 play/100lost 1

Last hands

  1. 200Even0
  2. 199Even0
  3. 198Seat 1+10
  4. 197Even0
  5. 196Seat 1+20
  6. 195Seat 1+15
  7. 194Seat 1+15
  8. 193Even0
  9. 192Even0
  10. 191Seat 1+15
  11. 190Even0
  12. 189Seat 1+10

The hands

Newest first
#BetDealerHandsPaidChecked
200109♠8♥ 1710♠7♠ 17101× the bet
199103♣2♣Q♠5♠ 207♣Q♥ 1700× the bet
198104♣Q♠A♦9♠ 243♠4♣6♥ 13202× the bet
19710K♥2♦ 127♣6♠10♦ 23 bust00× the bet
196109♥8♣ 173♦8♥9♥ 20 doubled404× the bet
19510Q♣J♥ 20A♣J♥ 21 blackjack252.5945× the bet
194107♥6♠ 13A♥Q♣ 21 blackjack252.5945× the bet
193107♣Q♦ 173♥K♦A♠K♣ 24 bust00× the bet
19210Q♦4♥ 144♦8♥A♠2♦10♠ 25 bust00× the bet
191102♠K♣ 12K♥A♠ 21 blackjack252.5945× the bet
190106♠2♠6♠A♥3♠ 187♠A♠4♥ 12 doubled00× the bet
189106♠10♦6♥ 228♠4♦ 12202× the bet
188106♦4♥2♥8♣ 203♣J♦ 1300× the bet
18710A♠7♦ 1810♠6♥ 16 surrendered50.5× the bet
186102♥Q♠9♦ 218♥Q♥ 1800× the bet
185104♣6♥ 10A♣J♠ 21 blackjack252.5945× the bet
184106♦Q♥A♣ 179♣4♦ 1300× the bet
183103♣A♣ 14A♠10♠ 21 blackjack252.5945× the bet
18210A♦J♠ 213♣4♦ 700× the bet
18110J♣A♠ 21K♠4♠ 1400× the bet
180104♣9♥4♦ 17Q♠K♠ 20202× the bet
17910K♠9♠ 193♠K♦4♥ 1700× the bet
17810A♥A♦ 128♦7♦K♠ 25 bust00× the bet
1771010♥Q♦ 203♣8♦Q♠ 21 doubled404× the bet
17610A♦6♣ 174♣8♣5♣ 17101× the bet
1751010♥K♣ 202♣6♣4♦6♠ 1800× the bet
174104♣K♥5♠ 196♥K♣ 1600× the bet
173108♠K♠ 182♦7♠5♠A♠10♦ 25 bust00× the bet
172106♠6♠6♦ 184♠Q♠ 1400× the bet
171106♥8♠6♠ 202♠5♦6♣ 1300× the bet
170103♣3♠2♠J♥ 18J♣7♦ 1700× the bet
169105♠A♣4♦ 209♣10♣ 1900× the bet
16810A♠6♣ 172♠6♥6♣10♣ 24 bust00× the bet
167105♥2♠2♥A♣ 2010♣5♥ 1500× the bet
166102♥A♠ 13K♣A♠ 21 blackjack252.5945× the bet
165102♥8♣7♠ 175♦10♣ 1500× the bet
164102♠10♠2♣K♠ 247♠6♣ 13202× the bet
16310Q♣3♥J♠ 23A♣2♦5♣9♣ 17202× the bet
1621010♣7♠ 17K♠2♠K♣ 22 bust00× the bet
16110K♦Q♣ 20J♦8♥ 1800× the bet
160103♠4♥2♠9♥ 187♠5♣A♦ 1300× the bet
159107♠K♦ 17Q♣2♦4♥10♦ 26 bust00× the bet
158109♠A♠ 208♥J♠ 188♠6♠8♠ 22 bust00× the bet
15710J♥2♠6♠ 184♠A♣10♣6♦ 21202× the bet
15610A♣A♥Q♠6♥ 184♦4♠9♦ 1700× the bet
1551010♥3♠A♠Q♣ 245♣8♣2♣4♦ 19202× the bet
154109♦2♠Q♦ 214♥6♥2♣ 12 doubled00× the bet
15310J♠7♣ 1710♣J♣ 20202× the bet
152104♣9♥K♠ 2310♠4♣ 14202× the bet
15110Q♠8♠ 182♥2♠2♠A♦3♣ 20202× 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
b809430b799436b720dce562720c935d3db41ddfd5745e6cd21ee61000ba6d4c
Seed
ce3397483c71ed4c91ac121ae7596150e8cc1cbbb7b57c269d83347621a989c6 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
a79d1e23763fddb546e029e1fbdff2bc
Commitment
Batch 72,970, Merkle root 58248fe0e0c3c120a7bf291180e62d5cc62cc80c0041b530ee898463dd77b84f. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 17d66a8c66028141d874dc651109f5fcd0a1a6d74f3288f21271d7961b78da98
  2. 9d898f40dd4b3c6c8eec8eacfcc5e457dcd7fd0f916a4024a4842d6bd30ecc08
  3. e9dfdd808c3dc6b7dcd2181b1a63e1cbfc017891c9489fbefed47083e1a99a81
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.