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Degen Protocol
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Session against the house

Blackjack

ended Play money · e4fcbbd06a68424e6f5ea85857ad206a

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,270 play
Returned
2,130 play
Bettor's net
-140 play
Return
93.83%

Results by hand

Final
Hands
200
played
Pace
20.7/min
overall 20.6/min
Biggest swing
+30
Seat 1 · hand 47

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

SeatNetRateStreak
gbb-140-70.0 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50109♠K♦ 197♥2♠K♣ 19101× the bet
49109♣J♠ 19J♦K♦ 20202× the bet
481010♠5♣4♦ 197♠A♠A♦ 19101× the bet
47102♦8♣4♦2♦Q♦ 268♣A♣ 198♥2♦3♦ 13 doubled606× the bet
46102♣4♠3♥J♥ 198♥7♦ 1500× the bet
451010♣A♣ 215♣8♠ 1300× the bet
44109♣Q♣ 196♠9♥8♥ 23 bust00× the bet
43102♦J♠A♠3♥9♥ 255♦3♥5♦ 13202× the bet
42105♠5♦5♣2♦ 178♣3♣5♠ 16 doubled00× the bet
41106♣7♦J♣ 232♠Q♣ 12202× the bet
40103♦2♥4♠Q♣ 199♣7♥ 1600× the bet
3910K♣10♥ 206♦K♣ 16 surrendered50.5× the bet
38103♦2♥Q♥6♠ 21J♦10♣ 2000× the bet
3710Q♥10♦ 208♦5♠2♠A♦5♥ 21202× the bet
36105♠10♦J♥ 258♣5♥ 13202× the bet
35104♠A♣3♥ 185♠3♥10♠ 18101× the bet
34109♦9♥ 185♠Q♥A♣A♥ 1700× the bet
33107♥10♦ 17J♠4♥6♦ 20202× the bet
32102♦7♥5♥9♣ 235♠8♠ 13202× the bet
31107♥6♥ 133♥2♦A♣K♦9♠ 25 bust00× the bet
30106♠J♠7♣ 239♥3♣ 12202× the bet
2910K♦5♠4♣ 19J♥7♦ 1700× the bet
28103♦5♣K♥ 185♣9♥ 1400× the bet
27107♦J♠ 174♠Q♠J♥ 24 bust00× the bet
26106♦6♦6♠ 18J♦6♦ 1600× the bet
2510K♣A♥ 215♥J♥ 1500× the bet
24108♦7♠6♥ 215♠4♣A♠ 2000× the bet
23107♣A♦ 182♦3♣5♣K♥ 20202× the bet
2210K♠Q♠ 208♣Q♦ 1800× the bet
2110A♠4♠ 153♠10♥10♣ 23 bust00× the bet
20104♦K♦6♦ 20K♠K♠ 20101× the bet
191010♦10♥ 204♣J♣3♠ 1700× the bet
1810A♣9♣ 204♠J♥A♣9♠ 24 bust00× the bet
17106♥9♥K♥ 257♦3♦Q♦ 20 doubled404× the bet
16102♥7♣5♥9♥ 232♥9♣4♣ 15 doubled404× the bet
1510Q♥6♠3♦ 198♥A♣ 198♦7♥9♦ 24 bust101× the bet
14108♠9♥ 175♠5♥J♦ 20 doubled404× the bet
13105♣J♠3♥ 182♣A♥3♥J♠ 1600× the bet
1210J♠3♣ 1310♦A♦ 21 blackjack252.5945× the bet
11102♣J♠A♥J♦ 238♣K♥ 18202× the bet
1010K♥6♥ 166♠10♥ 16 surrendered50.5× the bet
910Q♦A♠ 212♥2♠ 400× the bet
8102♣Q♠2♦2♦6♠ 229♥6♦ 15202× the bet
7105♥K♦6♥ 213♦Q♣ 1300× the bet
6106♥10♣ 16A♦K♦ 21 blackjack252.5945× the bet
510Q♥6♣10♠ 268♥3♥K♦ 21 doubled404× the bet
41010♠6♦8♣ 24Q♥K♣ 20202× the bet
3109♦2♥ 11J♥6♠ 16 surrendered50.5× the bet
210A♦6♣ 172♥8♦4♣K♠ 24 bust00× the bet
1103♣J♥2♣8♠ 237♥2♦2♦ 11 doubled404× 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
c5e87d8c8bd28f358188499587d727d236722cc0080b261cfccaa2c7d2022912
Seed
054b24355a8630933809d460a0b4751bb76ed297026ab10454884be62f4210f6 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
7b1bd1491f0c3493a86a610f7745ba49
Commitment
Batch 64,380, Merkle root f3746c71dca9108b18940b32101240a98ff811d363f7e40c6c103dda016eb195. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 111684dbc28198b242c9a8f304cfc2028676bcbdd480451481f0473840dd574e
  2. a7c2f50f96101984cdb3cde5da3144026e9299c64dc25a6ad7e1676018e56e21
  3. 97f867068524f961dc4161e486ba21dc17f6189fbb1bc99be8f7b03b1a682645
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.