Degen Protocol
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Session against the house

Blackjack

ended Play money · 0861a03e4c34c3a03024933f5319fecf

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,240 play
Returned
2,185 play
Bettor's net
-55 play
Return
97.54%

Results by hand

Final
Hands
200
played
Pace
21.2/min
overall 19.9/min
Biggest swing
+40
Seat 1 · hand 62

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

SeatNetRateStreak
gbb-55-27.5 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50107♥2♦3♠4♦7♣ 233♠J♣4♥ 17202× the bet
49108♠K♣ 186♣4♣8♦ 18 doubled202× the bet
48104♠5♣6♦9♥ 243♠4♥3♦3♣ 13202× the bet
47105♣2♠K♦ 17J♥9♦ 19202× the bet
46104♠K♠10♦ 249♥5♥ 14202× the bet
4510Q♣K♥ 202♠6♣K♠ 1800× the bet
44108♣A♠ 19K♣K♠ 20202× the bet
43106♦10♠6♥ 22A♣6♥6♦ 13 doubled404× the bet
421010♦6♣A♠ 177♠7♠3♣ 17101× the bet
41109♠K♥ 195♣10♠2♣ 1700× the bet
4010A♦J♣ 21Q♥10♦ 2000× the bet
39104♦2♣7♣4♠ 177♣10♥ 17101× the bet
3810A♠J♠ 215♠3♣ 800× the bet
3710J♠6♠ 166♠K♠ 16 surrendered50.5× the bet
36106♦Q♣2♥ 1810♣K♥ 20202× the bet
35106♣6♣6♦ 189♦2♠8♣ 19 doubled404× the bet
34103♠A♠ 14Q♣A♣ 21 blackjack252.5945× the bet
3310A♣3♥ 14K♠4♠Q♣ 24 bust00× the bet
3210A♣J♣ 21Q♥10♠ 2000× the bet
311010♠K♥ 20Q♣K♥ 20101× the bet
30104♥A♠9♣8♠ 22J♣10♣ 20202× the bet
29106♦K♥10♣ 269♣4♥ 13202× the bet
28103♠3♠K♥K♦ 26Q♣8♣ 18202× the bet
27104♥10♦A♥Q♣ 258♦10♣ 18202× the bet
26103♦6♦4♣J♣ 238♠Q♠ 18202× the bet
2510K♥K♥ 206♦10♦ 16 surrendered50.5× the bet
24105♦Q♥J♦ 253♥10♠ 13202× the bet
2310A♥5♣7♥Q♠ 233♥4♦8♥3♣ 18202× the bet
22107♥K♥ 176♠5♠3♥ 14 doubled00× the bet
2110K♥A♥ 217♠A♠ 1800× the bet
20108♦Q♠ 185♦9♦4♠ 18101× the bet
19106♣A♣ 173♦J♦ 1300× the bet
1810A♦K♣ 21J♥8♣ 1800× the bet
17105♦7♠8♥ 202♥8♠10♠ 20 doubled202× the bet
16102♠10♣Q♥ 229♦J♠ 19202× the bet
15109♣A♠ 20J♠9♥ 1900× the bet
1410A♦5♥ 165♥K♣8♦ 23 bust00× the bet
1310Q♦A♦ 218♦Q♠ 1800× the bet
1210Q♣9♣ 1910♣6♣ 16 surrendered50.5× the bet
111010♠J♦ 202♥9♣Q♦ 21 doubled404× the bet
101010♣Q♥ 207♠K♥ 1700× the bet
910A♦4♦2♠ 17A♣7♥3♥ 21202× the bet
81010♥A♥ 214♦9♥ 1300× the bet
7109♦4♣Q♣ 239♠Q♣ 19202× the bet
61010♦6♠Q♠ 264♦4♠3♠8♥ 19202× the bet
51010♦K♣ 207♥A♣3♥ 21202× the bet
4103♥8♠2♠K♥ 23K♠Q♣ 20202× the bet
3109♣2♠4♦9♣ 2410♦J♣ 20202× the bet
2106♣6♠Q♥ 22K♦K♦ 20202× the bet
1103♥6♠2♣Q♥ 217♠2♦2♦ 11 doubled00× 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
7425e1045200e1dccd00238283739c0bc6597ab4bf93113943de38ccfc42ee24
Seed
ad23b96d486fa881b68b39dc7bc654627ca937068e985c6578ea001f7c7085f1 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
3802d32c61843acd1d0bc98a417c076b
Commitment
Batch 66,406, Merkle root 1a67d25673d2fe1c1ccd12ef0f7a7184acc2de144c820b5c1212719df614a3f6. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 8c9b8ebef69cf1badba9d61262efb5348fd0e91334daa4251ed45c99f89ec505
  2. ad3467e870575ef1cd761972a35c46514af8aa458207056129615ce635dd33d6
  3. 006d36dbeec3ebd578995b2b4c1c90ffec9ba90456a67831974a824426234eb7
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.