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Degen Protocol
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Session against the house

Blackjack

ended Play money · 1ad1383ab1a12ced8271a9071893d34a

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,180 play
Returned
1,875 play
Bettor's net
-305 play
Return
86.01%

Results by hand

Final
Hands
200
played
Pace
20.8/min
overall 19.8/min
Biggest swing
-30
Seat 1 · hand 62

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

SeatNetRateStreak
gbb-305-152.5 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
100107♠4♦6♦ 179♠A♦ 20202× the bet
99107♦3♣ 10K♣3♦J♦ 23 bust00× the bet
98105♠5♣7♠ 174♥7♣2♣ 13 doubled00× the bet
97107♦Q♦ 17J♦4♦Q♦ 24 bust00× the bet
96103♣8♣A♣2♠6♥ 203♦4♣2♣6♠ 1500× the bet
95108♣10♣ 186♠7♠K♠ 23 bust00× the bet
941010♠A♠ 213♦Q♦ 1300× the bet
9310A♣A♦5♠ 173♣8♥10♠ 21202× the bet
921010♦8♠ 182♥K♦J♦ 22 bust00× the bet
91103♥Q♣Q♠ 23A♥K♥ 21A♦9♣ 20404× the bet
90107♠A♦ 18Q♣6♥3♠ 19202× the bet
8910K♠7♥ 177♣2♠4♠9♥ 22 bust00× the bet
881010♥3♥2♥2♥ 174♠8♣7♥ 19202× the bet
87106♣3♣4♦J♣ 232♦K♠ 12202× the bet
8610Q♥5♦K♠ 25A♠8♦ 19202× the bet
851010♦10♠ 20K♠4♣6♣ 20101× the bet
84108♦A♥ 19A♣6♣J♦ 1700× the bet
83106♥8♦4♠ 184♠K♣ 1400× the bet
82107♣Q♣ 1710♦10♥ 20202× the bet
8110Q♦7♦ 179♣7♦ 16 surrendered50.5× the bet
80104♦7♣8♦ 197♦10♥ 1700× the bet
7910Q♣A♦ 217♦K♠ 1700× the bet
781010♦Q♠ 208♦9♦ 1700× the bet
77108♦J♥ 188♠Q♠ 18101× the bet
761010♣6♣ 16J♣5♦ 15 surrendered50.5× the bet
75102♦9♦6♣ 172♥A♥10♣ 1300× the bet
7410A♠A♥ 122♣4♠9♥J♦ 25 bust00× the bet
7310K♠2♣ 12J♠6♣ 16 surrendered50.5× the bet
72107♣10♦ 17K♦2♦2♠Q♠ 24 bust00× the bet
7110Q♦4♦10♦ 248♥A♠ 19202× the bet
70107♥J♠ 178♦6♥A♦5♣ 20202× the bet
691010♥3♥ 138♠7♣ 15 surrendered50.5× the bet
6810A♥Q♦ 219♣7♠ 1600× the bet
67104♥Q♠J♣ 246♠7♠ 13202× the bet
66107♦9♥9♣ 257♣10♥ 17202× the bet
65107♠5♦5♠ 173♥4♣7♠6♣ 20202× the bet
64105♠7♣6♥ 187♣Q♣ 1700× the bet
63108♣7♠4♣ 195♥3♣2♣5♣A♣2♣ 1800× the bet
62107♠5♥8♥ 203♥7♣4♠ 14 doubled3♥2♦7♣2♣3♣ 1700× the bet
6110Q♥7♥ 176♠7♠5♦ 18202× the bet
60107♣10♥ 17K♥3♣3♠8♣ 24 bust00× the bet
59102♥3♣3♥6♦Q♥ 24A♣7♦ 18202× the bet
58106♣2♥3♣6♠ 177♣6♠ 1300× the bet
57107♦8♣ 154♣2♣2♠3♣4♥J♥ 25 bust00× the bet
56107♠A♦ 186♦6♣9♣ 21202× the bet
551010♦2♣ 126♥6♠10♥ 22 bust00× the bet
54103♣7♣9♦ 197♠3♥3♠ 13 doubled00× the bet
53109♠7♣ 166♣2♥4♦10♣ 22 bust00× the bet
5210J♦9♦ 198♣Q♣ 1800× the bet
51104♠6♦2♣9♥ 21Q♥J♥ 2000× 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
acf16f0a4d125f95ee613b926ad9dba7f134715e2a2c2668ac4329ce6e622d72
Seed
dcfc9c8387d11270e8e7581ffaebe2f5a2df23481040bfc1ee598c6d321d45dc SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
cafc3230778f929b24de6ce7c29de3ff
Commitment
Batch 64,917, Merkle root 2a08cee45ef43d5249d112aac8b37b372b26f9517faf0f7591f9013c01c23e5e. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 3443330053154880e929089a775b5a623506b80986573c0697c7eb5ae0f09819
  2. 688b96af019c6e04432bc793019afa862c7d16e1a4820918bd8f1b1195dfc4d6
  3. 883b7397b93f6cb28f66eb702752f1cb309144a10e04e764f4925dcf16425c42
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.