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Degen Protocol
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Session against the house

Blackjack

ended Play money · 9990fbbd25ecfeb8b4f89a86c68a17b9

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,270 play
Returned
2,250 play
Bettor's net
-20 play
Return
99.12%

Results by hand

Final
Hands
200
played
Pace
20.6/min
overall 20.4/min
Biggest swing
+30
Seat 1 · hand 105

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

SeatNetRateStreak
gbb-20-10.0 play/100won 2

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
1001010♣Q♦ 20Q♦Q♠ 20101× the bet
99106♣K♦ 16J♦A♠ 21 blackjack252.5945× the bet
98104♠J♦10♣ 247♥Q♥ 17202× the bet
9710A♥A♦2♠10♣10♣ 244♥A♠Q♦2♠ 17202× the bet
96109♣K♠ 193♣5♦K♦ 1800× the bet
9510Q♦10♣ 209♦7♣ 16 surrendered50.5× the bet
94107♠2♠A♦ 20A♠6♠2♣ 1900× the bet
93104♥3♦7♦4♣ 182♦7♥6♣ 15 doubled00× the bet
92107♠4♥2♣7♦ 20J♠4♣A♠4♥ 1900× the bet
91105♦8♥8♥ 2110♦5♠ 1500× the bet
9010A♦2♥A♠2♣K♠3♥ 1910♥10♥ 20202× the bet
89105♣9♠8♥ 222♦3♥J♠ 152♦3♦2♣5♥ 12404× the bet
8810J♣A♠ 215♠6♣ 1100× the bet
8710J♠2♣ 123♠A♦A♥7♥2♥2♦9♠ 25 bust00× the bet
86109♣Q♦ 19A♦6♦6♥K♣ 23 bust00× the bet
8510J♠8♦ 18K♠J♦ 20202× the bet
84109♥K♥ 198♥2♠3♦ 13 doubled00× the bet
8310A♦5♣A♦ 179♦9♣ 18202× the bet
82107♣2♣8♥ 172♣10♣8♦ 20202× the bet
8110J♦8♣ 18Q♦7♥ 1700× the bet
80109♣K♦ 193♥4♣2♠5♣K♥ 24 bust00× the bet
7910K♥K♦ 204♠A♣K♣Q♣ 25 bust00× the bet
78106♠3♠7♠9♦ 254♣J♣ 14202× the bet
77107♠8♣2♥ 174♦J♠2♣2♣ 18202× the bet
76105♣K♣5♣ 202♠7♣J♦ 19 doubled00× the bet
75108♦Q♥ 182♠9♥K♦ 21 doubled404× the bet
74107♣5♣ 124♠8♣A♠10♥ 23 bust00× the bet
73103♣2♦9♠J♣ 247♠6♦ 13202× the bet
72102♠6♥ 8Q♥A♠ 21 blackjack252.5945× the bet
71104♠A♥7♥10♦ 228♥J♣ 18202× the bet
70106♥8♦9♣ 23A♣4♠4♣ 19 doubled404× the bet
69102♠10♣4♣A♠ 173♥Q♥ 1300× the bet
68109♣Q♠ 19K♥7♣ 1700× the bet
6710Q♠9♥ 193♥9♦3♦K♣ 25 bust00× the bet
66103♠K♠9♥ 2210♣5♥ 15202× the bet
65108♠9♦ 177♠10♠ 17101× the bet
64109♣5♥8♣ 227♣Q♠ 17202× the bet
6310Q♥9♥ 19K♦Q♥ 20202× the bet
621010♠Q♥ 20Q♦9♦ 1900× the bet
6110Q♦8♦ 18J♦K♣ 20202× the bet
6010J♦J♦ 203♥3♠8♦Q♥ 24 bust00× the bet
59108♥K♠ 185♦5♣J♥ 20 doubled404× the bet
58104♦K♠Q♥ 24J♠Q♥ 20202× the bet
57106♣4♣4♦10♣ 24J♥10♠ 20202× the bet
561010♣3♠3♣3♣ 197♣3♠3♣4♣ 1700× the bet
5510K♣2♦ 126♣J♣ 16 surrendered50.5× the bet
54102♦7♥8♦ 17K♦3♥ 1300× the bet
5310J♦5♦ 155♦10♦ 15 surrendered50.5× the bet
52106♣A♠ 17K♥Q♠ 20202× the bet
5110K♥6♥6♦ 224♠Q♣4♦ 18202× 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
317b340813a193fce9c216dea11b0165585d0af122f43987ce006777feedc3f8
Seed
9153cd4c811674aac563deb0de4a4adf4219a4a791c0b517f057d238776fe840 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
624906e4e1971376b73f74dadee589c9
Commitment
Batch 63,595, Merkle root a3e528b5ebd06bc24afc8efbfa03e7ad8c45f629f3cd6de0a762bd4f56165760. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. c7090154ee72886b861326da55b48e93817665c46c46e88a9af32226056de36b
  2. 9e0803f0f17528d6b707cc5f280d4c94cbb7c3d6dc7718c5119b8128e2f1af71
  3. 4a519ee5554100af191a7379ee0edee8c0447fe1b45ec1d599bcc5ce4bd38a9c
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.