Degen Protocol
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Session against the house

Blackjack

ended Play money · 24583c56759b465c61a50bcc7c785642

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,210 play
Returned
2,005 play
Bettor's net
-205 play
Return
90.72%

Results by hand

Final
Hands
200
played
Pace
21.0/min
overall 20.8/min
Biggest swing
+20
Seat 1 · hand 8

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

SeatNetRateStreak
gbb-205-102.5 play/100won 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50109♥7♠ 163♦K♥3♥8♦ 24 bust00× the bet
49107♦7♦J♣ 24J♦10♥ 20202× the bet
48105♦10♣2♦ 1710♥10♥ 20202× the bet
47102♥7♣J♠ 195♣A♥9♥ 1500× the bet
46108♠10♣ 188♥6♣J♦ 24 bust00× the bet
45107♣4♣2♣J♣ 23J♦10♦ 20202× the bet
44106♦7♣Q♥ 23K♠10♠ 20202× the bet
43109♥3♥8♥ 209♦Q♥ 1900× the bet
42106♥3♠7♥4♠ 207♣Q♣ 1700× the bet
41106♣2♠K♠ 18A♥6♦A♣ 18 doubled202× the bet
40104♦J♦K♦ 245♦3♠2♥4♦ 14202× the bet
39107♦K♠ 173♠8♣2♠ 13 doubled00× the bet
38107♦8♦A♣3♥ 19K♠9♥ 19101× the bet
37105♣10♠5♣ 205♣A♣2♦ 18 doubled00× the bet
3610Q♣10♣ 205♣7♠2♥K♠ 24 bust00× the bet
35105♦A♠7♦4♣ 17K♠8♦ 18202× the bet
3410Q♠Q♣ 20Q♦5♠ 15 surrendered50.5× the bet
33103♦4♣4♦7♠ 18A♣4♦7♥A♦ 1300× the bet
32104♥A♥A♦7♦7♦ 206♠K♠ 1600× the bet
31109♥K♥ 19K♦A♥ 21 blackjack252.5945× the bet
3010A♦2♥10♦J♠ 23J♥5♠3♦ 18202× the bet
291010♣4♣3♣ 174♦7♦8♦ 19 doubled404× the bet
2810K♦9♠ 195♦4♦4♥J♥ 23 bust00× the bet
2710Q♥Q♣ 205♥10♣ 15 surrendered50.5× the bet
2610A♣4♥ 155♦J♥Q♣ 25 bust00× the bet
2510Q♦K♦ 205♥A♠2♣5♥9♦ 22 bust00× the bet
2410A♥K♥ 21J♦J♠ 2000× the bet
23106♦2♥9♣ 178♦2♣K♥ 20 doubled404× the bet
2210K♠Q♥ 20A♦10♠ 21A♥J♥ 21404× the bet
2110A♣Q♣ 215♠Q♣ 1500× the bet
20106♥3♦10♠ 194♣9♣ 1300× the bet
191010♠6♠ 16J♦5♣ 15 surrendered50.5× the bet
18105♦4♣5♥A♠J♣ 256♦K♥ 16202× the bet
17102♥6♥ 810♣A♦ 21 blackjack252.5945× the bet
16107♥6♠ 139♦6♥9♦ 24 bust00× the bet
15108♥A♠ 192♣2♥9♥J♦ 23 bust00× the bet
14107♠A♠ 1810♣9♠ 19202× the bet
13109♦A♣ 207♦Q♦ 1700× the bet
12104♠7♦2♣8♥ 218♥A♥ 1900× the bet
11103♦4♦A♠ 182♠K♠7♣ 19202× the bet
10104♥3♠9♠2♣ 185♦J♥ 1500× the bet
910A♥K♦ 213♠5♣ 800× the bet
8109♦7♦10♣ 26A♦9♣ 20A♦5♣ 16404× the bet
7109♦Q♦ 19Q♣J♣ 20202× the bet
6105♦5♠10♣ 209♥5♠ 1400× the bet
510Q♦8♣ 18K♦2♠A♣J♣ 23 bust00× the bet
4107♣K♥ 174♣A♠9♠8♥ 22 bust00× the bet
3107♦8♠ 155♠10♠J♦ 25 bust00× the bet
2103♥8♦J♦ 21J♦3♦ 1300× the bet
1108♠8♣ 162♥3♣K♣8♠ 23 bust00× 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
7446e23d4751ab742290704351765f1677343a70461a8199649961ed28e123e2
Seed
4341179feb390031a2499d38cfc23a9c83bc5741470037ceca30fb4dfe3e387a SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
a89c60a35f699f69efe9fda5dd6a6755
Commitment
Batch 71,710, Merkle root 14cd4e71e8b0cc7fef4915ccf27c88091705663572dbbd44c84c19864e7b21c7. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. bcadb0efccaa27bb01bca1af1a4c21e9318ba4a85f0eea1048b015ea2f02839a
  2. e4de39a81f094fb77344f22429a0500b2e980be941f1eba12e9e302dfc0da7bb
  3. 205b83e5c97d6549a7a4fb0301d9b938534d64230b74f2cc7058b32d1b8a0194
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.